diff --git a/.criu.metadata b/.criu.metadata new file mode 100644 index 0000000..a7d72a4 --- /dev/null +++ b/.criu.metadata @@ -0,0 +1 @@ +daec5be3c57e7539137601bfad5026dc1a302754 SOURCES/criu-2.12.tar.bz2 diff --git a/.gitignore b/.gitignore new file mode 100644 index 0000000..bc9f047 --- /dev/null +++ b/.gitignore @@ -0,0 +1 @@ +SOURCES/criu-2.12.tar.bz2 diff --git a/README.md b/README.md deleted file mode 100644 index 98f42b4..0000000 --- a/README.md +++ /dev/null @@ -1,4 +0,0 @@ -The master branch has no content - -Look at the c7 branch if you are working with CentOS-7, or the c4/c5/c6 branch for CentOS-4, 5 or 6 -If you find this file in a distro specific branch, it means that no content has been checked in yet diff --git a/SOURCES/0001-Fix-ppc64el-build-failure-by-not-redefining-AT_VECTO.patch b/SOURCES/0001-Fix-ppc64el-build-failure-by-not-redefining-AT_VECTO.patch new file mode 100644 index 0000000..c138294 --- /dev/null +++ b/SOURCES/0001-Fix-ppc64el-build-failure-by-not-redefining-AT_VECTO.patch @@ -0,0 +1,46 @@ +From 3ef0c620a15994097e3e30d2ba4a90afb39d17fe Mon Sep 17 00:00:00 2001 +From: Adrian Reber +Date: Fri, 4 Aug 2017 03:13:26 -0400 +Subject: [PATCH] Fix ppc64el build failure, by not redefining + AT_VECTOR_SIZE_ARCH + +Bugzilla: https://bugzilla.redhat.com/show_bug.cgi?id=1477803 + +Backport of following commit on the 2.12 release: + +commit c10e0d215412edac55e941f57cc4ba80422968dd +Author: Gianfranco Costamagna +Date: Wed Jul 5 12:50:07 2017 +0200 + + Fix ppc64el build failure, by not redefining AT_VECTOR_SIZE_ARCH + + This fixes the ppc64el build failure + CC criu/arch/ppc64/sigframe.o + In file included from criu/arch/ppc64/sigframe.c:5:0: + criu/arch/ppc64/include/asm/types.h:32:0: error: "AT_VECTOR_SIZE_ARCH" redefined [-Werror] + #define AT_VECTOR_SIZE_ARCH 6 + + Signed-off-by: Andrei Vagin + +Signed-off-by: Adrian Reber +--- + criu/arch/ppc64/include/asm/infect-types.h | 2 ++ + 1 file changed, 2 insertions(+) + +diff --git a/criu/arch/ppc64/include/asm/infect-types.h b/criu/arch/ppc64/include/asm/infect-types.h +index 1969ca2..e07bf1e 100644 +--- a/criu/arch/ppc64/include/asm/infect-types.h ++++ b/criu/arch/ppc64/include/asm/infect-types.h +@@ -83,7 +83,9 @@ typedef struct { + * include/linux/mm_types.h + */ + #define AT_VECTOR_SIZE_BASE 20 ++#if !defined AT_VECTOR_SIZE_ARCH + #define AT_VECTOR_SIZE_ARCH 6 ++#endif + #define AT_VECTOR_SIZE (2*(AT_VECTOR_SIZE_ARCH + AT_VECTOR_SIZE_BASE + 1)) + + typedef uint64_t auxv_t; +-- +1.8.3.1 + diff --git a/SOURCES/0001-kerndat-Detect-if-we-have-guard-page-mangle-in-procf.patch b/SOURCES/0001-kerndat-Detect-if-we-have-guard-page-mangle-in-procf.patch new file mode 100644 index 0000000..09ebdb7 --- /dev/null +++ b/SOURCES/0001-kerndat-Detect-if-we-have-guard-page-mangle-in-procf.patch @@ -0,0 +1,127 @@ +From 8a4a164f3e33be9b2d28d54fe430e92f40626054 Mon Sep 17 00:00:00 2001 +From: Cyrill Gorcunov +Date: Mon, 26 Jun 2017 23:55:28 +0300 +Subject: [PATCH 1/2] kerndat: Detect if we have guard page mangle in procfs + output + +In vanilla kernel commit 1be7107fbe18eed3e319a6c3e83c78254b693acb +show_map_vma() no longer report PAGE_SIZE. Detect it with +simple test and remember in kdat settings. + +Suggested-by: Oleg Nesterov +Signed-off-by: Cyrill Gorcunov +Signed-off-by: Andrei Vagin +--- + criu/include/kerndat.h | 1 + + criu/kerndat.c | 76 ++++++++++++++++++++++++++++++++++++++++++++++++++ + 2 files changed, 77 insertions(+) + +diff --git a/criu/include/kerndat.h b/criu/include/kerndat.h +index ba8c10da7..891cbdd41 100644 +--- a/criu/include/kerndat.h ++++ b/criu/include/kerndat.h +@@ -44,6 +44,7 @@ struct kerndat_s { + unsigned int has_xtlocks; + unsigned long mmap_min_addr; + bool has_tcp_half_closed; ++ bool stack_guard_gap_hidden; + }; + + extern struct kerndat_s kdat; +diff --git a/criu/kerndat.c b/criu/kerndat.c +index 354fb672b..80ec58bcf 100644 +--- a/criu/kerndat.c ++++ b/criu/kerndat.c +@@ -563,6 +563,80 @@ int kerndat_tcp_repair(void) + return exit_code; + } + ++static int kerndat_detect_stack_guard_gap(void) ++{ ++ int num, ret = -1, detected = 0; ++ unsigned long start, end; ++ char r, w, x, s; ++ char buf[1024]; ++ FILE *maps; ++ void *mem; ++ ++ mem = mmap(NULL, (3ul << 20), PROT_READ | PROT_WRITE, ++ MAP_PRIVATE | MAP_ANONYMOUS | MAP_GROWSDOWN, -1, 0); ++ if (mem == MAP_FAILED) { ++ pr_perror("Can't mmap stack area"); ++ return -1; ++ } ++ munmap(mem, (3ul << 20)); ++ ++ mem = mmap(mem + (2ul << 20), (1ul << 20), PROT_READ | PROT_WRITE, ++ MAP_PRIVATE | MAP_ANONYMOUS | MAP_FIXED | MAP_GROWSDOWN, -1, 0); ++ if (mem == MAP_FAILED) { ++ pr_perror("Can't mmap stack area"); ++ return -1; ++ } ++ ++ maps = fopen("/proc/self/maps", "r"); ++ if (maps == NULL) { ++ munmap(mem, 4096); ++ return -1; ++ } ++ ++ while (fgets(buf, sizeof(buf), maps)) { ++ num = sscanf(buf, "%lx-%lx %c%c%c%c", ++ &start, &end, &r, &w, &x, &s); ++ if (num < 6) { ++ pr_err("Can't parse: %s\n", buf); ++ goto err; ++ } ++ ++ /* ++ * When reading /proc/$pid/[s]maps the ++ * start/end addresses migh be cutted off ++ * with PAGE_SIZE on kernels prior 4.12 ++ * (see kernel commit 1be7107fbe18ee). ++ * ++ * Same time there was semi-complete ++ * patch released which hitted a number ++ * of repos (Ubuntu, Fedora) where instead ++ * of PAGE_SIZE the 1M gap is cutted off. ++ */ ++ if (start == (unsigned long)mem) { ++ kdat.stack_guard_gap_hidden = false; ++ detected = 1; ++ break; ++ } else if (start == ((unsigned long)mem + (1ul << 20))) { ++ pr_warn("Unsupported stack guard detected, confused but continue\n"); ++ kdat.stack_guard_gap_hidden = true; ++ detected = 1; ++ break; ++ } else if (start == ((unsigned long)mem + PAGE_SIZE)) { ++ kdat.stack_guard_gap_hidden = true; ++ detected = 1; ++ break; ++ } ++ } ++ ++ if (detected) ++ ret = 0; ++ ++err: ++ munmap(mem, (1ul << 20)); ++ fclose(maps); ++ return ret; ++} ++ + int kerndat_init(void) + { + int ret; +@@ -676,6 +750,8 @@ int kerndat_init(void) + ret = kerndat_iptables_has_xtlocks(); + if (!ret) + ret = kerndat_tcp_repair(); ++ if (!ret) ++ ret = kerndat_detect_stack_guard_gap(); + + kerndat_lsm(); + kerndat_mmap_min_addr(); +-- +2.13.0 + diff --git a/SOURCES/0002-mem-Don-t-assume-guard-page-is-returned-in-procfs-wi.patch b/SOURCES/0002-mem-Don-t-assume-guard-page-is-returned-in-procfs-wi.patch new file mode 100644 index 0000000..09cc160 --- /dev/null +++ b/SOURCES/0002-mem-Don-t-assume-guard-page-is-returned-in-procfs-wi.patch @@ -0,0 +1,115 @@ +From be37925cff8aaf43f14866bd0a60dca6068a8d97 Mon Sep 17 00:00:00 2001 +From: Cyrill Gorcunov +Date: Mon, 26 Jun 2017 23:55:29 +0300 +Subject: [PATCH 2/2] mem: Don't assume guard page is returned in procfs with + new kernels + +If the guard page is not reported in show_map_vma we should +not ajust vma address neither we should call unmap_guard_pages +in restorer. + +https://github.com/xemul/criu/issues/322 + +Signed-off-by: Cyrill Gorcunov +Signed-off-by: Andrei Vagin +--- + criu/include/mem.h | 2 ++ + criu/mem.c | 19 ++++++++++++++----- + criu/proc_parse.c | 3 ++- + 3 files changed, 18 insertions(+), 6 deletions(-) + +diff --git a/criu/include/mem.h b/criu/include/mem.h +index 2fae797c6..2fc8e1e0e 100644 +--- a/criu/include/mem.h ++++ b/criu/include/mem.h +@@ -9,11 +9,13 @@ struct parasite_ctl; + struct vm_area_list; + struct page_pipe; + struct pstree_item; ++struct vma_area; + + struct mem_dump_ctl { + bool pre_dump; + }; + ++extern bool vma_has_guard_gap_hidden(struct vma_area *vma); + extern bool page_in_parent(bool dirty); + extern int prepare_mm_pid(struct pstree_item *i); + extern int do_task_reset_dirty_track(int pid); +diff --git a/criu/mem.c b/criu/mem.c +index 2c4323d8c..cd41829b2 100644 +--- a/criu/mem.c ++++ b/criu/mem.c +@@ -499,7 +499,7 @@ int prepare_mm_pid(struct pstree_item *i) + + if (vma_area_is_private(vma, kdat.task_size)) { + ri->vmas.priv_size += vma_area_len(vma); +- if (vma->e->flags & MAP_GROWSDOWN) ++ if (vma_has_guard_gap_hidden(vma)) + ri->vmas.priv_size += PAGE_SIZE; + } + +@@ -634,7 +634,7 @@ static int premap_private_vma(struct pstree_item *t, struct vma_area *vma, void + * A grow-down VMA has a guard page, which protect a VMA below it. + * So one more page is mapped here to restore content of the first page + */ +- if (vma->e->flags & MAP_GROWSDOWN) { ++ if (vma_has_guard_gap_hidden(vma)) { + vma->e->start -= PAGE_SIZE; + if (paddr) + paddr -= PAGE_SIZE; +@@ -702,7 +702,7 @@ static int premap_private_vma(struct pstree_item *t, struct vma_area *vma, void + pr_debug("\tpremap %#016"PRIx64"-%#016"PRIx64" -> %016lx\n", + vma->e->start, vma->e->end, (unsigned long)addr); + +- if (vma->e->flags & MAP_GROWSDOWN) { /* Skip gurad page */ ++ if (vma_has_guard_gap_hidden(vma)) { /* Skip gurad page */ + vma->e->start += PAGE_SIZE; + vma->premmaped_addr += PAGE_SIZE; + } +@@ -1046,6 +1047,11 @@ out: + return ret; + } + ++bool vma_has_guard_gap_hidden(struct vma_area *vma) ++{ ++ return kdat.stack_guard_gap_hidden && (vma->e->flags & MAP_GROWSDOWN); ++} ++ + /* + * A gard page must be unmapped after restoring content and + * forking children to restore COW memory. +@@ -1055,6 +1061,9 @@ int unmap_guard_pages(struct pstree_item *t) + struct vma_area *vma; + struct list_head *vmas = &rsti(t)->vmas.h; + ++ if (!kdat.stack_guard_gap_hidden) ++ return 0; ++ + list_for_each_entry(vma, vmas, list) { + if (!vma_area_is_private(vma, kdat.task_size)) + continue; +diff --git a/criu/proc_parse.c b/criu/proc_parse.c +index f1237cf9f..5e36db540 100644 +--- a/criu/proc_parse.c ++++ b/criu/proc_parse.c +@@ -25,6 +25,7 @@ + #include "kerndat.h" + #include "vdso.h" + #include "vma.h" ++#include "mem.h" + #include "bfd.h" + #include "proc_parse.h" + #include "fdinfo.h" +@@ -637,7 +638,7 @@ static int vma_list_add(struct vma_area *vma_area, + } + + /* Add a guard page only if here is enough space for it */ +- if ((vma_area->e->flags & MAP_GROWSDOWN) && ++ if (vma_has_guard_gap_hidden(vma_area) && + *prev_end < vma_area->e->start) + vma_area->e->start -= PAGE_SIZE; /* Guard page */ + *prev_end = vma_area->e->end; +-- +2.13.0 + diff --git a/SOURCES/crit.1 b/SOURCES/crit.1 new file mode 100644 index 0000000..4ec17ac --- /dev/null +++ b/SOURCES/crit.1 @@ -0,0 +1,235 @@ +'\" t +.\" Title: crit +.\" Author: [see the "AUTHOR" section] +.\" Generator: DocBook XSL Stylesheets v1.79.1 +.\" Date: 03/09/2017 +.\" Manual: CRIU Manual +.\" Source: criu 2.12 +.\" Language: English +.\" +.TH "CRIT" "1" "03/09/2017" "criu 2\&.12" "CRIU Manual" +.\" ----------------------------------------------------------------- +.\" * Define some portability stuff +.\" ----------------------------------------------------------------- +.\" ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ +.\" http://bugs.debian.org/507673 +.\" http://lists.gnu.org/archive/html/groff/2009-02/msg00013.html +.\" ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ +.ie \n(.g .ds Aq \(aq +.el .ds Aq ' +.\" ----------------------------------------------------------------- +.\" * (re)Define some macros +.\" ----------------------------------------------------------------- +.\" ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ +.\" toupper - uppercase a string (locale-aware) +.\" ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ +.de toupper +.tr aAbBcCdDeEfFgGhHiIjJkKlLmMnNoOpPqQrRsStTuUvVwWxXyYzZ +\\$* +.tr aabbccddeeffgghhiijjkkllmmnnooppqqrrssttuuvvwwxxyyzz +.. +.\" ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ +.\" SH-xref - format a cross-reference to an SH section +.\" ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ +.de SH-xref +.ie n \{\ +.\} +.toupper \\$* +.el \{\ +\\$* +.\} +.. +.\" ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ +.\" SH - level-one heading that works better for non-TTY output +.\" ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ +.de1 SH +.\" put an extra blank line of space above the head in non-TTY output +.if t \{\ +.sp 1 +.\} +.sp \\n[PD]u +.nr an-level 1 +.set-an-margin +.nr an-prevailing-indent \\n[IN] +.fi +.in \\n[an-margin]u +.ti 0 +.HTML-TAG ".NH \\n[an-level]" +.it 1 an-trap +.nr an-no-space-flag 1 +.nr an-break-flag 1 +\." make the size of the head bigger +.ps +3 +.ft B +.ne (2v + 1u) +.ie n \{\ +.\" if n (TTY output), use uppercase +.toupper \\$* +.\} +.el \{\ +.nr an-break-flag 0 +.\" if not n (not TTY), use normal case (not uppercase) +\\$1 +.in \\n[an-margin]u +.ti 0 +.\" if not n (not TTY), put a border/line under subheading +.sp -.6 +\l'\n(.lu' +.\} +.. +.\" ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ +.\" SS - level-two heading that works better for non-TTY output +.\" ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ +.de1 SS +.sp \\n[PD]u +.nr an-level 1 +.set-an-margin +.nr an-prevailing-indent \\n[IN] +.fi +.in \\n[IN]u +.ti \\n[SN]u +.it 1 an-trap +.nr an-no-space-flag 1 +.nr an-break-flag 1 +.ps \\n[PS-SS]u +\." make the size of the head bigger +.ps +2 +.ft B +.ne (2v + 1u) +.if \\n[.$] \&\\$* +.. +.\" ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ +.\" BB/EB - put background/screen (filled box) around block of text +.\" ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ +.de BB +.if t \{\ +.sp -.5 +.br +.in +2n +.ll -2n +.gcolor red +.di BX +.\} +.. +.de EB +.if t \{\ +.if "\\$2"adjust-for-leading-newline" \{\ +.sp -1 +.\} +.br +.di +.in +.ll +.gcolor +.nr BW \\n(.lu-\\n(.i +.nr BH \\n(dn+.5v +.ne \\n(BHu+.5v +.ie "\\$2"adjust-for-leading-newline" \{\ +\M[\\$1]\h'1n'\v'+.5v'\D'P \\n(BWu 0 0 \\n(BHu -\\n(BWu 0 0 -\\n(BHu'\M[] +.\} +.el \{\ +\M[\\$1]\h'1n'\v'-.5v'\D'P \\n(BWu 0 0 \\n(BHu -\\n(BWu 0 0 -\\n(BHu'\M[] +.\} +.in 0 +.sp -.5v +.nf +.BX +.in +.sp .5v +.fi +.\} +.. +.\" ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ +.\" BM/EM - put colored marker in margin next to block of text +.\" ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ +.de BM +.if t \{\ +.br +.ll -2n +.gcolor red +.di BX +.\} +.. +.de EM +.if t \{\ +.br +.di +.ll +.gcolor +.nr BH \\n(dn +.ne \\n(BHu +\M[\\$1]\D'P -.75n 0 0 \\n(BHu -(\\n[.i]u - \\n(INu - .75n) 0 0 -\\n(BHu'\M[] +.in 0 +.nf +.BX +.in +.fi +.\} +.. +.\" ----------------------------------------------------------------- +.\" * set default formatting +.\" ----------------------------------------------------------------- +.\" ----------------------------------------------------------------- +.\" * MAIN CONTENT STARTS HERE * +.\" ----------------------------------------------------------------- +.SH "Name" +crit \- CRiu Image Tool +.SH "Synopsis" +.sp +\fBcrit\fR \fIdecode\fR [\-h] [\-i IN] [\-o OUT] [\-\-pretty] +.sp +\fBcrit\fR \fIencode\fR [\-h] [\-i IN] [\-o OUT] +.sp +\fBcrit\fR \fIinfo\fR [\-h] in +.sp +\fBcrit\fR \fIx\fR [\-h] dir {ps,fds,mems} +.sp +\fBcrit\fR \fIshow\fR [\-h] in +.SH "DESCRIPTION" +.sp +\fBcrit\fR is a feature\-rich replacement for existing \fBcriu\fR show\&. +.SH "ARGUMENTS" +.SS "Positional Arguments" +.PP +\fBdecode\fR +.RS 4 +convert +\fBcriu\fR +image from binary type JSON +.RE +.PP +\fBencode\fR +.RS 4 +convert +\fBcriu\fR +image from JSON type to binary +.RE +.PP +\fBinfo\fR +.RS 4 +show info about image +.RE +.PP +\fBx\fR +.RS 4 +explore image directory +.RE +.PP +\fBshow\fR +.RS 4 +convert +\fBcriu\fR +image from binary to human\-readable JSON +.RE +.SS "Optional Arguments" +.PP +\fB\-h\fR, \fB\-\-help\fR +.RS 4 +Print some help and exit +.RE +.SH "SEE ALSO" +.sp +criu(8) +.SH "AUTHOR" +.sp +The CRIU team diff --git a/SOURCES/criu.8 b/SOURCES/criu.8 new file mode 100644 index 0000000..5456233 --- /dev/null +++ b/SOURCES/criu.8 @@ -0,0 +1,1157 @@ +'\" t +.\" Title: criu +.\" Author: [see the "AUTHOR" section] +.\" Generator: DocBook XSL Stylesheets v1.79.1 +.\" Date: 03/09/2017 +.\" Manual: CRIU Manual +.\" Source: criu 2.12 +.\" Language: English +.\" +.TH "CRIU" "8" "03/09/2017" "criu 2\&.12" "CRIU Manual" +.\" ----------------------------------------------------------------- +.\" * Define some portability stuff +.\" ----------------------------------------------------------------- +.\" ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ +.\" http://bugs.debian.org/507673 +.\" http://lists.gnu.org/archive/html/groff/2009-02/msg00013.html +.\" ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ +.ie \n(.g .ds Aq \(aq +.el .ds Aq ' +.\" ----------------------------------------------------------------- +.\" * (re)Define some macros +.\" ----------------------------------------------------------------- +.\" ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ +.\" toupper - uppercase a string (locale-aware) +.\" ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ +.de toupper +.tr aAbBcCdDeEfFgGhHiIjJkKlLmMnNoOpPqQrRsStTuUvVwWxXyYzZ +\\$* +.tr aabbccddeeffgghhiijjkkllmmnnooppqqrrssttuuvvwwxxyyzz +.. +.\" ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ +.\" SH-xref - format a cross-reference to an SH section +.\" ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ +.de SH-xref +.ie n \{\ +.\} +.toupper \\$* +.el \{\ +\\$* +.\} +.. +.\" ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ +.\" SH - level-one heading that works better for non-TTY output +.\" ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ +.de1 SH +.\" put an extra blank line of space above the head in non-TTY output +.if t \{\ +.sp 1 +.\} +.sp \\n[PD]u +.nr an-level 1 +.set-an-margin +.nr an-prevailing-indent \\n[IN] +.fi +.in \\n[an-margin]u +.ti 0 +.HTML-TAG ".NH \\n[an-level]" +.it 1 an-trap +.nr an-no-space-flag 1 +.nr an-break-flag 1 +\." make the size of the head bigger +.ps +3 +.ft B +.ne (2v + 1u) +.ie n \{\ +.\" if n (TTY output), use uppercase +.toupper \\$* +.\} +.el \{\ +.nr an-break-flag 0 +.\" if not n (not TTY), use normal case (not uppercase) +\\$1 +.in \\n[an-margin]u +.ti 0 +.\" if not n (not TTY), put a border/line under subheading +.sp -.6 +\l'\n(.lu' +.\} +.. +.\" ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ +.\" SS - level-two heading that works better for non-TTY output +.\" ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ +.de1 SS +.sp \\n[PD]u +.nr an-level 1 +.set-an-margin +.nr an-prevailing-indent \\n[IN] +.fi +.in \\n[IN]u +.ti \\n[SN]u +.it 1 an-trap +.nr an-no-space-flag 1 +.nr an-break-flag 1 +.ps \\n[PS-SS]u +\." make the size of the head bigger +.ps +2 +.ft B +.ne (2v + 1u) +.if \\n[.$] \&\\$* +.. +.\" ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ +.\" BB/EB - put background/screen (filled box) around block of text +.\" ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ +.de BB +.if t \{\ +.sp -.5 +.br +.in +2n +.ll -2n +.gcolor red +.di BX +.\} +.. +.de EB +.if t \{\ +.if "\\$2"adjust-for-leading-newline" \{\ +.sp -1 +.\} +.br +.di +.in +.ll +.gcolor +.nr BW \\n(.lu-\\n(.i +.nr BH \\n(dn+.5v +.ne \\n(BHu+.5v +.ie "\\$2"adjust-for-leading-newline" \{\ +\M[\\$1]\h'1n'\v'+.5v'\D'P \\n(BWu 0 0 \\n(BHu -\\n(BWu 0 0 -\\n(BHu'\M[] +.\} +.el \{\ +\M[\\$1]\h'1n'\v'-.5v'\D'P \\n(BWu 0 0 \\n(BHu -\\n(BWu 0 0 -\\n(BHu'\M[] +.\} +.in 0 +.sp -.5v +.nf +.BX +.in +.sp .5v +.fi +.\} +.. +.\" ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ +.\" BM/EM - put colored marker in margin next to block of text +.\" ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ +.de BM +.if t \{\ +.br +.ll -2n +.gcolor red +.di BX +.\} +.. +.de EM +.if t \{\ +.br +.di +.ll +.gcolor +.nr BH \\n(dn +.ne \\n(BHu +\M[\\$1]\D'P -.75n 0 0 \\n(BHu -(\\n[.i]u - \\n(INu - .75n) 0 0 -\\n(BHu'\M[] +.in 0 +.nf +.BX +.in +.fi +.\} +.. +.\" ----------------------------------------------------------------- +.\" * set default formatting +.\" ----------------------------------------------------------------- +.\" ----------------------------------------------------------------- +.\" * MAIN CONTENT STARTS HERE * +.\" ----------------------------------------------------------------- +.SH "Name" +criu \- checkpoint/restore in userspace +.SH "Synopsis" +.sp +\fBcriu\fR \fIcommand\fR [\fIoption\fR \&...] +.SH "DESCRIPTION" +.sp +\fBcriu\fR is a tool for checkpointing and restoring running applications\&. It does this by saving their state as a collection of files (see the \fBdump\fR command) and creating equivalent processes from those files (see the \fBrestore\fR command)\&. The restore operation can be performed at a later time, on a different system, or both\&. +.SH "OPTIONS" +.SS "Common options" +.sp +Common options are applicable to any \fIcommand\fR\&. +.PP +\fB\-v\fR[\fBv\fR\&...] +.RS 4 +Increase verbosity up from the default level\&. Multiple +\fBv\fR +can be used, each increasing verbosity by one level\&. +.RE +.PP +\fB\-v\fR\fInum\fR +.RS 4 +Set verbosity level to +\fInum\fR\&. The higher the level, the more output is produced\&. + +The following levels are available: +.sp +.RS 4 +.ie n \{\ +\h'-04'\(bu\h'+03'\c +.\} +.el \{\ +.sp -1 +.IP \(bu 2.3 +.\} +\fB\-v0\fR +no output; +.RE +.sp +.RS 4 +.ie n \{\ +\h'-04'\(bu\h'+03'\c +.\} +.el \{\ +.sp -1 +.IP \(bu 2.3 +.\} +\fB\-v1\fR +only errors; +.RE +.sp +.RS 4 +.ie n \{\ +\h'-04'\(bu\h'+03'\c +.\} +.el \{\ +.sp -1 +.IP \(bu 2.3 +.\} +\fB\-v2\fR +above plus warnings (this is the default level); +.RE +.sp +.RS 4 +.ie n \{\ +\h'-04'\(bu\h'+03'\c +.\} +.el \{\ +.sp -1 +.IP \(bu 2.3 +.\} +\fB\-v3\fR +above plus information messages and timestamps; +.RE +.sp +.RS 4 +.ie n \{\ +\h'-04'\(bu\h'+03'\c +.\} +.el \{\ +.sp -1 +.IP \(bu 2.3 +.\} +\fB\-v4\fR +above plus lots of debug\&. +.RE +.RE +.PP +\fB\-\-pidfile\fR \fIfile\fR +.RS 4 +Write root task, service or page\-server pid into a +\fIfile\fR\&. +.RE +.PP +\fB\-o\fR, \fB\-\-log\-file\fR \fIfile\fR +.RS 4 +Write logging messages to +\fIfile\fR\&. +.RE +.PP +\fB\-\-log\-pid\fR +.RS 4 +Write separate logging files per each pid\&. +.RE +.PP +\fB\-\-display\-stats\fR +.RS 4 +During dump as well as during restore +\fBcriu\fR +collects information like the time required to dump or restore the process or the number of pages dumped or restored\&. This information is always written to the files +\fIstats\-dump\fR +and +\fIstats\-restore\fR +and can be easily displayed using +\fBcrit\fR\&. The option +\fB\-\-display\-stats\fR +additionally prints out this information on the console at the end of a dump or a restore\&. +.RE +.PP +\fB\-D\fR, \fB\-\-images\-dir\fR \fIpath\fR +.RS 4 +Use +\fIpath\fR +as a base directory where to look for sets of image files\&. +.RE +.PP +\fB\-\-prev\-images\-dir\fR \fIpath\fR +.RS 4 +Use +\fIpath\fR +as a parent directory where to look for sets of image files\&. This option makes sense in case of incremental dumps\&. +.RE +.PP +\fB\-W\fR, \fB\-\-work\-dir\fR \fIdir\fR +.RS 4 +Use directory +\fIdir\fR +for putting logs, pidfiles and statistics\&. If not specified, +\fIpath\fR +from +\fB\-D\fR +option is taken\&. +.RE +.PP +\fB\-\-close\fR \fIfd\fR +.RS 4 +Close file descriptor +\fIfd\fR +before performing any actions\&. +.RE +.PP +\fB\-L\fR, \fB\-\-libdir\fR \fIpath\fR +.RS 4 +Path to plugins directory\&. +.RE +.PP +\fB\-\-action\-script\fR \fIscript\fR +.RS 4 +Add an external action script to be executed at certain stages\&. The environment variable +\fBCRTOOLS_SCRIPT_ACTION\fR +is available to the script to find out which action is being executed, and its value can be one of the following: +.PP +\fBpre\-dump\fR +.RS 4 +run prior to beginning a +\fBdump\fR +.RE +.PP +\fBpost\-dump\fR +.RS 4 +run upon +\fBdump\fR +completion +.RE +.PP +\fBpre\-restore\fR +.RS 4 +run prior to beginning a +\fBrestore\fR +.RE +.PP +\fBpre\-resume\fR +.RS 4 +run when all processes and resources are restored but tasks are stopped waiting for final kick to run\&. Must not fail\&. +.RE +.PP +\fBpost\-restore\fR +.RS 4 +run upon +\fBrestore\fR +completion +.RE +.PP +\fBnetwork\-lock\fR +.RS 4 +run to lock network in a target network namespace +.RE +.PP +\fBnetwork\-unlock\fR +.RS 4 +run to unlock network in a target network namespace +.RE +.PP +\fBsetup\-namespaces\fR +.RS 4 +run once root task just been created with required namespaces\&. Note it is an early stage of restore, when nothing is restored yet except for namespaces themselves +.RE +.RE +.PP +\fB\-V\fR, \fB\-\-version\fR +.RS 4 +Print program version and exit\&. +.RE +.PP +\fB\-h\fR, \fB\-\-help\fR +.RS 4 +Print some help and exit\&. +.RE +.SS "pre\-dump" +.sp +Performs the pre\-dump procedure, during which \fBcriu\fR creates a snapshot of memory changes since the previous \fBpre\-dump\fR\&. Note that during this \fBcriu\fR also creates the fsnotify cache which speeds up the \fBrestore\fR procedure\&. \fBpre\-dump\fR requires at least \fB\-t\fR option (see \fBdump\fR below)\&. In addition, \fBpage\-server\fR options may be specified\&. +.PP +\fB\-\-track\-mem\fR +.RS 4 +Turn on memory changes tracker in the kernel\&. If the option is not passed the memory tracker get turned on implicitly\&. +.RE +.SS "dump" +.sp +Performs a checkpoint procedure\&. +.PP +\fB\-t\fR, \fB\-\-tree\fR \fIpid\fR +.RS 4 +Checkpoint the whole process tree starting from +\fIpid\fR\&. +.RE +.PP +\fB\-R\fR, \fB\-\-leave\-running\fR +.RS 4 +Leave tasks in running state after checkpoint, instead of killing\&. This option is pretty dangerous and should be used only if you understand what you are doing\&. +.sp +Note if task is about to run after been checkpointed, it can modify TCP connections, delete files and do other dangerous actions\&. Therefore, +\fBcriu\fR +can not guarantee that the next +\fBrestore\fR +action will succeed\&. Most likely if this option is used, at least the file system snapshot must be made with the help of +\fBpost\-dump\fR +action script\&. +.sp +In other words, do not use it unless really needed\&. +.RE +.PP +\fB\-s\fR, \fB\-\-leave\-stopped\fR +.RS 4 +Leave tasks in stopped state after checkpoint, instead of killing\&. +.RE +.PP +\fB\-\-external\fR \fItype\fR\fB[\fR\fIid\fR\fB]:\fR\fIvalue\fR +.RS 4 +Dump an instance of an external resource\&. The generic syntax is +\fItype\fR +of resource, followed by resource +\fIid\fR +(enclosed in literal square brackets), and optional +\fIvalue\fR +(prepended by a literal semicolon)\&. The following resource types are currently supported: +\fBmnt\fR, +\fBdev\fR, +\fBfile\fR, +\fBtty\fR, +\fBunix\fR\&. Syntax depends on type\&. Note to restore external resources, either +\fB\-\-external\fR +or +\fB\-\-inherit\-fd\fR +is used, depending on resource type\&. +.RE +.PP +\fB\-\-external mnt[\fR\fImountpoint\fR\fB]:\fR\fIname\fR +.RS 4 +Dump an external bind mount referenced by +\fImountpoint\fR, saving it to image under the identifier +\fIname\fR\&. +.RE +.PP +\fB\-\-external mnt[]:\fR\fIflags\fR +.RS 4 +Dump all external bind mounts, autodetecting those\&. Optional +\fIflags\fR +can contain +\fBm\fR +to also dump external master mounts, +\fBs\fR +to also dump external shared mounts (default behavior is to abort dumping if such mounts are found)\&. If +\fIflags\fR +are not provided, semicolon is optional\&. +.RE +.PP +\fB\-\-external dev[\fR\fImajor\fR\fB/\fR\fIminor\fR\fB]:\fR\fIname\fR +.RS 4 +Allow to dump a mount namespace having a real block device mounted\&. A block device is identified by its +\fImajor\fR +and +\fIminor\fR +numbers, and +\fBcriu\fR +saves its information to image under the identifier +\fIname\fR\&. +.RE +.PP +\fB\-\-external file[\fR\fImnt_id\fR\fB:\fR\fIinode\fR\fB]\fR +.RS 4 +Dump an external file, i\&.e\&. an opened file that is can not be resolved from the current mount namespace, which can not be dumped without using this option\&. The file is identified by +\fImnt_id\fR +(a field obtained from +\fB/proc/\fR\fIpid\fR\fB/fdinfo/\fR\fIN\fR) and +\fIinode\fR +(as returned by +\fBstat\fR(2))\&. +.RE +.PP +\fB\-\-external tty[\fR\fIrdev\fR\fB:\fR\fIdev\fR\fB]\fR +.RS 4 +Dump an external TTY, identified by +\fBst_rdev\fR +and +\fBst_dev\fR +fields returned by +\fBstat\fR(2)\&. +.RE +.PP +\fB\-\-external unix[\fR\fIid\fR\fB]\fR +.RS 4 +Tell +\fBcriu\fR +that one end of a pair of UNIX sockets (created by +\fBsocketpair\fR(2)) with +\fIid\fR +is OK to be disconnected\&. +.RE +.PP +\fB\-\-freeze\-cgroup\fR +.RS 4 +Use cgroup freezer to collect processes\&. +.RE +.PP +\fB\-\-manage\-cgroups\fR +.RS 4 +Collect cgroups into the image thus they gonna be restored then\&. Without this option, +\fBcriu\fR +will not save cgroups configuration associated with a task\&. +.RE +.PP +\fB\-\-cgroup\-props\fR \fIspec\fR +.RS 4 +Specify controllers and their properties to be saved into the image file\&. +\fBcriu\fR +predefines specifications for common controllers, but since the kernel can add new controllers and modify their properties, there should be a way to specify ones matched the kernel\&. +.sp +\fIspec\fR +argument describes the controller and properties specification in a simplified YAML form: +.sp +.if n \{\ +.RS 4 +.\} +.fam C +.ps -1 +.nf +.BB lightgray +"c1": + \- "strategy": "merge" + \- "properties": ["a", "b"] +"c2": + \- "strategy": "replace" + \- "properties": ["c", "d"] +.EB lightgray +.fi +.fam +.ps +1 +.if n \{\ +.RE +.\} +.sp +where +\fIc1\fR +and +\fIc2\fR +are controllers names, and +\fIa\fR, +\fIb\fR, +\fIc\fR, +\fId\fR +are their properties\&. +.sp +Note the format: double quotes, spaces and new lines are required\&. The +\fIstrategy\fR +specifies what to do if a controller specified already exists as a built\-in one: +\fBcriu\fR +can either +\fBmerge\fR +or +\fBreplace\fR +such\&. +.sp +For example, the command line for the above example should look like this: +.sp +.if n \{\ +.RS 4 +.\} +.fam C +.ps -1 +.nf +.BB lightgray +\-\-cgroup\-props "\e"c1\e":\en \- \e"strategy\e": \e"merge\e"\en \- \e"properties\e": [\e"a\e", \e"b\e"]\en \e"c2\e":\en \- \e"strategy\e": \e"replace\e"\en \- \e"properties\e": [\e"c\e", \e"d\e"]" +.EB lightgray +.fi +.fam +.ps +1 +.if n \{\ +.RE +.\} +.RE +.PP +\fB\-\-cgroup\-props\-file\fR \fIfile\fR +.RS 4 +Same as +\fB\-\-cgroup\-props\fR, except the specification is read from the +\fIfile\fR\&. +.RE +.PP +\fB\-\-cgroup\-dump\-controller\fR \fIname\fR +.RS 4 +Dump a controller with +\fIname\fR +only, skipping anything else that was discovered automatically (usually via +\fB/proc\fR)\&. This option is useful when one needs +\fBcriu\fR +to skip some controllers\&. +.RE +.PP +\fB\-\-cgroup\-props\-ignore\-default\fR +.RS 4 +When combined with +\fB\-\-cgroup\-props\fR, makes +\fBcriu\fR +substitute a predefined controller property with the new one shipped\&. If the option is not used, the predefined properties are merged with the provided ones\&. +.RE +.PP +\fB\-\-tcp\-established\fR +.RS 4 +Checkpoint established TCP connections\&. +.RE +.PP +\fB\-\-skip\-in\-flight\fR +.RS 4 +This option skips in\-flight TCP connections\&. If any TCP connections that are not yet completely established are found, +\fBcriu\fR +ignores these connections, rather than errors out\&. The TCP stack on the client side is expected to handle the re\-connect gracefully\&. +.RE +.PP +\fB\-\-evasive\-devices\fR +.RS 4 +Use any path to a device file if the original one is inaccessible\&. +.RE +.PP +\fB\-\-page\-server\fR +.RS 4 +Send pages to a page server (see the +\fBpage\-server\fR +command)\&. +.RE +.PP +\fB\-\-force\-irmap\fR +.RS 4 +Force resolving names for inotify and fsnotify watches\&. +.RE +.PP +\fB\-\-auto\-dedup\fR +.RS 4 +Deduplicate "old" data in pages images of previous +\fBdump\fR\&. This option implies incremental +\fBdump\fR +mode (see the +\fBpre\-dump\fR +command)\&. +.RE +.PP +\fB\-l\fR, \fB\-\-file\-locks\fR +.RS 4 +Dump file locks\&. It is necessary to make sure that all file lock users are taken into dump, so it is only safe to use this for enclosed containers where locks are not held by any processes outside of dumped process tree\&. +.RE +.PP +\fB\-\-link\-remap\fR +.RS 4 +Allows to link unlinked files back, if possible (modifies filesystem during +\fBrestore\fR)\&. +.RE +.PP +\fB\-\-ghost\-limit\fR \fIsize\fR +.RS 4 +Set the maximum size of deleted file to be carried inside image\&. By default, up to 1M file is allowed\&. Using this option allows to not put big deleted files inside images\&. Argument +\fIsize\fR +may be postfixed with a +\fBK\fR, +\fBM\fR +or +\fBG\fR, which stands for kilo\-, mega, and gigabytes, accordingly\&. +.RE +.PP +\fB\-j\fR, \fB\-\-shell\-job\fR +.RS 4 +Allow one to dump shell jobs\&. This implies the restored task will inherit session and process group ID from the +\fBcriu\fR +itself\&. This option also allows to migrate a single external tty connection, to migrate applications like +\fBtop\fR\&. If used with +\fBdump\fR +command, it must be specified with +\fBrestore\fR +as well\&. +.RE +.PP +\fB\-\-cpu\-cap\fR [\fIcap\fR[,\fIcap\fR\&...]] +.RS 4 +Specify CPU capabilities to write to an image file\&. The argument is a comma\-separated list of +\fBnone\fR, +\fBfpu\fR, +\fBcpu\fR, +\fBins\fR, +\fBall\fR\&. If the argument is omitted or set to +\fBnone\fR, capabilities will not be written, which is the default behavior\&. +.RE +.PP +\fB\-\-cgroup\-root\fR [\fIcontroller\fR:]/\fInewroot\fR +.RS 4 +Change the root for the controller that will be dumped\&. By default, +\fBcriu\fR +simply dumps everything below where any of the tasks live\&. However, if a container moves all of its tasks into a cgroup directory below the container engine\(cqs default directory for tasks, permissions will not be preserved on the upper directories with no tasks in them, which may cause problems\&. +.RE +.SS "restore" +.sp +Restores previously checkpointed processes\&. +.PP +\fB\-\-inherit\-fd\fR \fBfd[\fR\fIN\fR\fB]:\fR\fIresource\fR +.RS 4 +Inherit a file descriptor\&. This option lets +\fBcriu\fR +use an already opened file descriptor +\fIN\fR +for restoring a file identified by +\fIresource\fR\&. This option can be used to restore an external resource dumped with the help of +\fB\-\-external\fR +\fBfile\fR, +\fBtty\fR, and +\fBunix\fR +options\&. +.sp +The +\fIresource\fR +argument can be one of the following: +.sp +.RS 4 +.ie n \{\ +\h'-04'\(bu\h'+03'\c +.\} +.el \{\ +.sp -1 +.IP \(bu 2.3 +.\} +\fBtty[\fR\fIrdev\fR\fB:\fR\fIdev\fR\fB]\fR +.RE +.sp +.RS 4 +.ie n \{\ +\h'-04'\(bu\h'+03'\c +.\} +.el \{\ +.sp -1 +.IP \(bu 2.3 +.\} +\fBpipe[\fR\fIinode\fR\fB]\fR +.RE +.sp +.RS 4 +.ie n \{\ +\h'-04'\(bu\h'+03'\c +.\} +.el \{\ +.sp -1 +.IP \(bu 2.3 +.\} +\fBsocket[\fR\fIinode\fR\fB]\fR +.RE +.sp +.RS 4 +.ie n \{\ +\h'-04'\(bu\h'+03'\c +.\} +.el \{\ +.sp -1 +.IP \(bu 2.3 +.\} +\fBfile[\fR\fImnt_id\fR\fB:\fR\fIinode\fR\fB]\fR +.RE +.sp +.RS 4 +.ie n \{\ +\h'-04'\(bu\h'+03'\c +.\} +.el \{\ +.sp -1 +.IP \(bu 2.3 +.\} +\fIpath/to/file\fR +.RE +.sp +Note that square brackets used in this option arguments are literals and usually need to be escaped from shell\&. +.RE +.PP +\fB\-d\fR, \fB\-\-restore\-detached\fR +.RS 4 +Detach +\fBcriu\fR +itself once restore is complete\&. +.RE +.PP +\fB\-s\fR, \fB\-\-leave\-stopped\fR +.RS 4 +Leave tasks in stopped state after restore (rather than resuming their execution)\&. +.RE +.PP +\fB\-S\fR, \fB\-\-restore\-sibling\fR +.RS 4 +Restore root task as a sibling (makes sense only with +\fB\-\-restore\-detached\fR)\&. +.RE +.PP +\fB\-r\fR, \fB\-\-root\fR \fIpath\fR +.RS 4 +Change the root filesystem to +\fIpath\fR +(when run in a mount namespace)\&. +.RE +.PP +\fB\-\-external\fR \fItype\fR\fB[\fR\fIid\fR\fB]:\fR\fIvalue\fR +.RS 4 +Restore an instance of an external resource\&. The generic syntax is +\fItype\fR +of resource, followed by resource +\fIid\fR +(enclosed in literal square brackets), and optional +\fIvalue\fR +(prepended by a literal semicolon)\&. The following resource types are currently supported: +\fBmnt\fR, +\fBdev\fR, +\fBveth\fR, +\fBmacvlan\fR\&. Syntax depends on type\&. Note to restore external resources dealing with opened file descriptors (such as dumped with the help of +\fB\-\-external\fR +\fBfile\fR, +\fBtty\fR, and +\fBunix\fR +options), option +\fB\-\-inherit\-fd\fR +should be used\&. +.RE +.PP +\fB\-\-external mnt[\fR\fIname\fR\fB]:\fR\fImountpoint\fR +.RS 4 +Restore an external bind mount referenced in the image by +\fIname\fR, bind\-mounting it from the host +\fImountpoint\fR +to a proper mount point\&. +.RE +.PP +\fB\-\-external mnt[]\fR +.RS 4 +Restore all external bind mounts (dumped with the help of +\fB\-\-external mnt[]\fR +auto\-detection)\&. +.RE +.PP +\fB\-\-external dev[\fR\fIname\fR\fB]:\fR\fI/dev/path\fR +.RS 4 +Restore an external mount device, identified in the image by +\fIname\fR, using the existing block device +\fI/dev/path\fR\&. +.RE +.PP +\fB\-\-external veth[\fR\fIinner_dev\fR\fB]:\fR\fIouter_dev\fR\fB@\fR\fIbridge\fR +.RS 4 +Set the outer VETH device name (corresponding to +\fIinner_dev\fR +being restored) to +\fIouter_dev\fR\&. If optional +\fB@\fR\fIbridge\fR +is specified, +\fIouter_dev\fR +is added to that bridge\&. If the option is not used, +\fIouter_dev\fR +will be autogenerated by the kernel\&. +.RE +.PP +\fB\-\-external macvlan[\fR\fIinner_dev\fR\fB]:\fR\fIouter_dev\fR +.RS 4 +When restoring an image that have a MacVLAN device in it, this option must be used to specify to which +\fIouter_dev\fR +(an existing network device in CRIU namespace) the restored +\fIinner_dev\fR +should be bound to\&. +.RE +.PP +\fB\-\-manage\-cgroups\fR [\fImode\fR] +.RS 4 +Restore cgroups configuration associated with a task from the image\&. Controllers are always restored in an optimistic way \(em if already present in system, +\fBcriu\fR +reuses it, otherwise it will be created\&. +.RE +.sp +The \fImode\fR may be one of the following: +.PP +\fBnone\fR +.RS 4 +Do not restore cgroup properties but require cgroup to pre\-exist at the moment of +\fBrestore\fR +procedure\&. +.RE +.PP +\fBprops\fR +.RS 4 +Restore cgroup properties and require cgroup to pre\-exist\&. +.RE +.PP +\fBsoft\fR +.RS 4 +Restore cgroup properties if only cgroup has been created by +\fBcriu\fR, otherwise do not restore properties\&. This is the default if mode is unspecified\&. +.RE +.PP +\fBfull\fR +.RS 4 +Always restore all cgroups and their properties\&. +.RE +.PP +\fBstrict\fR +.RS 4 +Restore all cgroups and their properties from the scratch, requiring them to not present in the system\&. +.PP +\fB\-\-cgroup\-root\fR [\fIcontroller\fR\fB:\fR]/\fInewroot\fR +.RS 4 +Change the root cgroup the controller will be installed into\&. No controller means that root is the default for all controllers not specified\&. +.RE +.PP +\fB\-\-tcp\-established\fR +.RS 4 +Restore previously dumped established TCP connections\&. This implies that the network has been locked between +\fBdump\fR +and +\fBrestore\fR +phases so other side of a connection simply notice a kind of lag\&. +.RE +.PP +\fB\-\-veth\-pair\fR \fIIN\fR\fB=\fR\fIOUT\fR +.RS 4 +Correspondence between outside and inside names of veth devices\&. +.RE +.PP +\fB\-l\fR, \fB\-\-file\-locks\fR +.RS 4 +Restore file locks from the image\&. +.RE +.PP +\fB\-\-auto\-dedup\fR +.RS 4 +As soon as a page is restored it get punched out from image\&. +.RE +.PP +\fB\-j\fR, \fB\-\-shell\-job\fR +.RS 4 +Restore shell jobs, in other words inherit session and process group ID from the criu itself\&. +.RE +.PP +\fB\-\-cpu\-cap\fR [\fIcap\fR[,\fIcap\fR\&...]] +.RS 4 +Specify CPU capabilities to be present on the CPU the process is restoring\&. To inverse a capability, prefix it with +\fB^\fR\&. This option implies that +\fB\-\-cpu\-cap\fR +has been passed on +\fBdump\fR +as well, except +\fBfpu\fR +option case\&. The +\fIcap\fR +argument can be the following (or a set of comma\-separated values): +.RE +.RE +.PP +\fBall\fR +.RS 4 +Require all capabilities\&. This is +\fBdefault\fR +mode if +\fB\-\-cpu\-cap\fR +is passed without arguments\&. Most safe mode\&. +.RE +.PP +\fBcpu\fR +.RS 4 +Require the CPU to have all capabilities in image to match runtime CPU\&. +.RE +.PP +\fBfpu\fR +.RS 4 +Require the CPU to have compatible FPU\&. For example the process might be dumped with xsave capability but attempted to restore without it present on target CPU\&. In such case we refuse to proceed\&. This is +\fBdefault\fR +mode if +\fB\-\-cpu\-cap\fR +is not present in command line\&. Note this argument might be passed even if on the +\fBdump\fR +no +\fB\-\-cpu\-cap\fR +have been specified because FPU frames are always encoded into images\&. +.RE +.PP +\fBins\fR +.RS 4 +Require CPU compatibility on instructions level\&. +.RE +.PP +\fBnone\fR +.RS 4 +Ignore capabilities\&. Most dangerous mode\&. The behaviour is implementation dependent\&. Try to not use it until really required\&. +.sp +For example, this option can be used in case +\fB\-\-cpu\-cap=cpu\fR +was used during +\fBdump\fR, and images are migrated to a less capable CPU and are to be restored\&. By default, +\fBcriu\fR +shows an error that CPU capabilities are not adequate, but this can be suppressed by using +\fB\-\-cpu\-cap=none\fR\&. +.PP +\fB\-\-weak\-sysctls\fR +.RS 4 +Silently skip restoring sysctls that are not available\&. This allows to restore on an older kernel, or a kernel configured without some options\&. +.RE +.RE +.SS "check" +.sp +Checks whether the kernel supports the features needed by \fBcriu\fR to dump and restore a process tree\&. +.sp +There are three categories of kernel support, as described below\&. \fBcriu check\fR always checks Category 1 features unless \fB\-\-feature\fR is specified which only checks a specified feature\&. +.PP +\fBCategory 1\fR +.RS 4 +Absolutely required\&. These are features like support for +\fB/proc/PID/map_files\fR, +\fBNETLINK_SOCK_DIAG\fR +socket monitoring, +\fB/proc/sys/kernel/ns_last_pid\fR +etc\&. +.RE +.PP +\fBCategory 2\fR +.RS 4 +Required only for specific cases\&. These are features like AIO remap, +\fB/dev/net/tun\fR +and others that are only required if a process being dumped or restored is using those\&. +.RE +.PP +\fBCategory 3\fR +.RS 4 +Experimental\&. These are features like +\fBtask\-diag\fR +that are used for experimental purposes (mostly during development)\&. +.RE +.sp +If there are no errors or warnings, \fBcriu\fR prints "Looks good\&." and its exit code is 0\&. +.sp +A missing Category 1 feature causes \fBcriu\fR to print "Does not look good\&." and its exit code is non\-zero\&. +.sp +Missing Category 2 and 3 features cause \fBcriu\fR to print "Looks good but \&..." and its exit code is be non\-zero\&. +.sp +Without any options, \fBcriu check\fR checks Category 1 features\&. This behavior can be changed by using the following options: +.PP +\fB\-\-extra\fR +.RS 4 +Check kernel support for Category 2 features\&. +.RE +.PP +\fB\-\-experimental\fR +.RS 4 +Check kernel support for Category 3 features\&. +.RE +.PP +\fB\-\-all\fR +.RS 4 +Check kernel support for Category 1, 2, and 3 features\&. +.RE +.PP +\fB\-\-feature\fR \fIname\fR +.RS 4 +Check a specific feature\&. If +\fIname\fR +is +\fBlist\fR, a list of valid kernel feature names that can be checked will be printed\&. +.RE +.SS "page\-server" +.sp +Launches \fBcriu\fR in page server mode\&. +.PP +\fB\-\-daemon\fR +.RS 4 +Runs page server as a daemon (background process)\&. +.RE +.PP +\fB\-\-status_fd\fR +.RS 4 +Write \e\e0 to the FD and close it once page\-server is ready to handle requests\&. The status\-fd allows to not daemonize a process and get its exit code at the end\&. It isn\(cqt supposed to use \-\-daemon and \-\-status\-fd together\&. +.RE +.PP +\fB\-\-address\fR \fIaddress\fR +.RS 4 +Page server IP address\&. +.RE +.PP +\fB\-\-port\fR \fInumber\fR +.RS 4 +Page server port number\&. +.RE +.SS "exec" +.sp +Executes a system call inside a destination task\*(Aqs context\&. This functionality is deprecated; please use \fBCompel\fR instead\&. +.SS "service" +.sp +Launches \fBcriu\fR in RPC daemon mode, where \fBcriu\fR is listening for RPC commands over socket to perform\&. This is convenient for a case where daemon itself is running in a privileged (superuser) mode but clients are not\&. +.SS "dedup" +.sp +Starts pagemap data deduplication procedure, where \fBcriu\fR scans over all pagemap files and tries to minimize the number of pagemap entries by obtaining the references from a parent pagemap image\&. +.SS "cpuinfo dump" +.sp +Fetches current CPU features and write them into an image file\&. +.SS "cpuinfo check" +.sp +Fetches current CPU features (i\&.e\&. CPU the \fBcriu\fR is running on) and test if they are compatible with the ones present in an image file\&. +.SH "EXAMPLES" +.sp +To checkpoint a program with pid of \fB1234\fR and write all image files into directory \fBcheckpoint\fR: +.sp +.if n \{\ +.RS 4 +.\} +.fam C +.ps -1 +.nf +.BB lightgray + criu dump \-D checkpoint \-t 1234 +.EB lightgray +.fi +.fam +.ps +1 +.if n \{\ +.RE +.\} +.sp +To restore this program detaching criu itself: +.sp +.if n \{\ +.RS 4 +.\} +.fam C +.ps -1 +.nf +.BB lightgray + criu restore \-d \-D checkpoint +.EB lightgray +.fi +.fam +.ps +1 +.if n \{\ +.RE +.\} +.SH "AUTHOR" +.sp +The CRIU team\&. +.SH "COPYRIGHT" +.sp +Copyright (C) 2011\-2016, Parallels Holdings, Inc\&. diff --git a/SPECS/criu.spec b/SPECS/criu.spec new file mode 100644 index 0000000..3e120b2 --- /dev/null +++ b/SPECS/criu.spec @@ -0,0 +1,313 @@ +Name: criu +Version: 2.12 +Release: 4%{?dist} +Provides: crtools = %{version}-%{release} +Obsoletes: crtools <= 1.0-2 +Summary: Tool for Checkpoint/Restore in User-space +Group: System Environment/Base +License: GPLv2 +URL: http://criu.org/ +Source0: http://download.openvz.org/criu/criu-%{version}.tar.bz2 +Patch1: 0001-kerndat-Detect-if-we-have-guard-page-mangle-in-procf.patch +Patch2: 0002-mem-Don-t-assume-guard-page-is-returned-in-procfs-wi.patch +Patch3: 0001-Fix-ppc64el-build-failure-by-not-redefining-AT_VECTO.patch + +%if 0%{?rhel} || 0%{?rhel_alt} +BuildRequires: systemd + +# RHEL has no asciidoc; take man-page from Fedora 24 +# zcat /usr/share/man/man8/criu.8.gz > criu.8 +Source1: criu.8 +Source2: crit.1 +%endif + +BuildRequires: libnet-devel +BuildRequires: protobuf-devel protobuf-c-devel python2-devel libnl3-devel libcap-devel +BuildRequires: perl +%if 0%{?fedora} +BuildRequires: asciidoc xmlto +%endif + +# user-space and kernel changes are only available for x86_64 and ARM +# code is very architecture specific +# once imported in RCS it needs a bug openend explaining the ExclusiveArch +# https://bugzilla.redhat.com/show_bug.cgi?id=902875 +%if 0%{?fedora} +ExclusiveArch: x86_64 %{arm} ppc64le aarch64 +%else +ExclusiveArch: x86_64 ppc64le aarch64 +%endif + + +%description +criu is the user-space part of Checkpoint/Restore in User-space +(CRIU), a project to implement checkpoint/restore functionality for +Linux in user-space. + +%if 0%{?fedora} +%package devel +Summary: Header files and libraries for %{name} +Group: Development/Libraries +Requires: %{name} = %{version}-%{release} + +%description devel +This package contains header files and libraries for %{name}. +%endif + +%package -n python-%{name} +Summary: Python bindings for %{name} +Group: Development/Languages +Requires: %{name} = %{version}-%{release} python-ipaddr protobuf-python + +%description -n python-%{name} +python-%{name} contains Python bindings for %{name}. + +%package -n crit +Summary: CRIU image tool +Requires: python-%{name} = %{version}-%{release} + +%description -n crit +crit is a tool designed to decode CRIU binary dump files and show +their content in human-readable form. + + +%prep +%setup -q +%patch1 -p1 +%patch2 -p1 +%patch3 -p1 + +%build +# %{?_smp_mflags} does not work +# -fstack-protector breaks build +CFLAGS+=`echo %{optflags} | sed -e 's,-fstack-protector\S*,,g'` make V=1 WERROR=0 PREFIX=%{_prefix} +%if 0%{?fedora} +make docs V=1 +%endif + + +%install +make install-criu DESTDIR=$RPM_BUILD_ROOT PREFIX=%{_prefix} LIBDIR=%{_libdir} +make install-lib DESTDIR=$RPM_BUILD_ROOT PREFIX=%{_prefix} LIBDIR=%{_libdir} +%if 0%{?fedora} +# ony install documentation on Fedora as it requires asciidoc, +# which is not available on RHEL7 +make install-man DESTDIR=$RPM_BUILD_ROOT PREFIX=%{_prefix} LIBDIR=%{_libdir} +%else +install -p -m 644 -D %{SOURCE1} $RPM_BUILD_ROOT%{_mandir}/man8/%{name}.8 +install -p -m 644 -D %{SOURCE2} $RPM_BUILD_ROOT%{_mandir}/man1/crit.1 +%endif + +%if 0%{?rhel} || 0%{?rhel_alt} +# remove devel package +rm -rf $RPM_BUILD_ROOT%{_includedir}/criu +rm $RPM_BUILD_ROOT%{_libdir}/*.so* +rm -rf $RPM_BUILD_ROOT%{_libdir}/pkgconfig +rm -rf $RPM_BUILD_ROOT%{_libexecdir}/%{name} +%endif + +%post -p /sbin/ldconfig +%postun -p /sbin/ldconfig + +%files +%{_sbindir}/%{name} +%doc %{_mandir}/man8/criu.8* +%if 0%{?fedora} +%{_libdir}/*.so.* +%{_libexecdir}/%{name} +%endif +%doc README.md COPYING + +%if 0%{?fedora} +%files devel +%{_includedir}/criu +%{_libdir}/*.so +%{_libdir}/pkgconfig/*.pc +%endif + +%files -n python-%{name} +%{python2_sitelib}/pycriu/* +%{python2_sitelib}/*egg-info + +%files -n crit +%{_bindir}/crit +%doc %{_mandir}/man1/crit.1* + + +%changelog +* Tue Sep 12 2017 Adrian Reber - 2.12-4 +- One more patch to use the correct define for AT_VECTOR_SIZE_ARCH + on the rhel-alt-7.4 branch + +* Tue Sep 12 2017 Adrian Reber - 2.12-3 +- Removed aio-fix.patch for rhel-alt-7.4 rebuild +- Made spec-file rhel-alt-7.4 defines aware +- Rebuilt for rhel-alt-7.4 to pick up correct kernel defines +- Added aarch64 architecture for rhel-alt-7.4 + +* Wed Jun 28 2017 Adrian Reber - 2.12-2 +- Added patches for guard page kernel fixes + +* Thu Mar 09 2017 Adrian Reber - 2.12-1 +- Update to 2.12 + +* Tue Jun 14 2016 Adrian Reber - 2.3-2 +- Added patches to handle in-flight TCP connections + +* Tue Jun 14 2016 Adrian Reber - 2.3-1 +- Update to 2.3 +- Copy man-page from Fedora 24 for RHEL + +* Mon May 23 2016 Adrian Reber - 2.2-1 +- Update to 2.2 + +* Tue Apr 12 2016 Adrian Reber - 2.1-2 +- Remove crtools symbolic link + +* Mon Apr 11 2016 Adrian Reber - 2.1-1 +- Update to 2.1 + +* Fri Apr 08 2016 Adrian Reber - 2.0-3 +- Exclude arm and aarch64 from build + +* Wed Apr 06 2016 Adrian Reber - 2.0-2 +- Merge changes from Fedora + +* Thu Mar 10 2016 Andrey Vagin - 2.0-1 +- Update to 2.0 + +* Wed Feb 03 2016 Fedora Release Engineering - 1.8-2 +- Rebuilt for https://fedoraproject.org/wiki/Fedora_24_Mass_Rebuild + +* Mon Dec 07 2015 Adrian Reber - 1.8-1 +- Update to 1.8 + +* Mon Nov 02 2015 Adrian Reber - 1.7.2-1 +- Update to 1.7.2 + +* Mon Sep 7 2015 Andrey Vagin - 1.7-1 +- Update to 1.7 + +* Mon Aug 31 2015 Adrian Reber - 1.6.1-3 +- added patch to fix broken docker checkpoint/restore (#1258539) + +* Fri Aug 28 2015 Adrian Reber - 1.6.1-2 +- removed criu.service (CVE-2015-5228, CVE-2015-5231) +- removed devel sub-package (related to above CVEs) + +* Wed Aug 19 2015 Adrian Reber - 1.6.1-1.1 +- fix release version number + +* Thu Aug 13 2015 Adrian Reber - 1.6.1-1 +- Update to 1.6.1 +- Merge changes for RHEL packaging + +* Wed Jun 17 2015 Fedora Release Engineering - 1.6-2 +- Rebuilt for https://fedoraproject.org/wiki/Fedora_23_Mass_Rebuild + +* Tue Jun 09 2015 Adrian Reber - 1.6-1.1 +- adapt to RHEL7 + +* Mon Jun 01 2015 Andrew Vagin - 1.6-1 +- Update to 1.6 + +* Thu Apr 30 2015 Andrew Vagin - 1.5.2-2 +- Require protobuf-python and python-ipaddr for python-criu + +* Tue Apr 28 2015 Andrew Vagin - 1.5.2 +- Update to 1.5.2 + +* Sun Apr 19 2015 Nikita Spiridonov - 1.5.1-2 +- Create python-criu and crit subpackages + +* Tue Mar 31 2015 Andrew Vagin - 1.5.1 +- Update to 1.5.1 + +* Sat Dec 06 2014 Adrian Reber - 1.4-1 +- Update to 1.4 + +* Tue Sep 23 2014 Adrian Reber - 1.3.1-1 +- Update to 1.3.1 (#1142896) + +* Tue Sep 02 2014 Adrian Reber - 1.3-1 +- Update to 1.3 +- Dropped all upstreamed patches +- included pkgconfig file in -devel + +* Sat Aug 16 2014 Fedora Release Engineering - 1.2-5 +- Rebuilt for https://fedoraproject.org/wiki/Fedora_21_22_Mass_Rebuild + +* Thu Aug 07 2014 Andrew Vagin - 1.2-4 +- Include inttypes.h for PRI helpers + +* Thu Aug 07 2014 Andrew Vagin - 1.2-3 +- Rebuilt for https://bugzilla.redhat.com/show_bug.cgi?id=1126751 + +* Sat Jun 07 2014 Fedora Release Engineering - 1.2-2 +- Rebuilt for https://fedoraproject.org/wiki/Fedora_21_Mass_Rebuild + +* Fri Feb 28 2014 Adrian Reber - 1.2-1 +- Update to 1.2 +- Dropped all upstreamed patches + +* Tue Feb 04 2014 Adrian Reber - 1.1-4 +- Create -devel subpackage + +* Wed Dec 11 2013 Andrew Vagin - 1.0-3 +- Fix the epoch of crtools + +* Tue Dec 10 2013 Andrew Vagin - 1.0-2 +- Rename crtools to criu #1034677 + +* Wed Nov 27 2013 Andrew Vagin - 1.0-1 +- Update to 1.0 + +* Thu Oct 24 2013 Andrew Vagin - 0.8-1 +- Update to 0.8 + +* Tue Sep 10 2013 Andrew Vagin - 0.7-1 +- Update to 0.7 + +* Sat Aug 03 2013 Fedora Release Engineering - 0.6-5 +- Rebuilt for https://fedoraproject.org/wiki/Fedora_20_Mass_Rebuild + +* Wed Jul 24 2013 Andrew Vagin - 0.6-3 +- Delete all kind of -fstack-protector gcc options + +* Wed Jul 24 2013 Andrew Vagin - 0.6-3 +- Added arm macro to ExclusiveArch + +* Wed Jul 03 2013 Andrew Vagin - 0.6-2 +- fix building on ARM +- fix null pointer dereference + +* Tue Jul 02 2013 Adrian Reber - 0.6-1 +- updated to 0.6 +- upstream moved binaries to sbin +- using upstream's make install + +* Tue May 14 2013 Adrian Reber - 0.5-1 +- updated to 0.5 + +* Fri Feb 22 2013 Adrian Reber - 0.4-1 +- updated to 0.4 + +* Wed Feb 13 2013 Fedora Release Engineering - 0.3-4 +- Rebuilt for https://fedoraproject.org/wiki/Fedora_19_Mass_Rebuild + +* Tue Jan 22 2013 Adrian Reber - 0.3-3 +- added ExclusiveArch blocker bug + +* Fri Jan 18 2013 Adrian Reber - 0.3-2 +- improved Summary and Description + +* Mon Jan 14 2013 Adrian Reber - 0.3-1 +- updated to 0.3 +- fix building Documentation/ + +* Tue Aug 21 2012 Adrian Reber - 0.2-2 +- remove macros like %%{__mkdir_p} and %%{__install} +- add comment why it is only x86_64 + +* Tue Aug 21 2012 Adrian Reber - 0.2-1 +- initial release