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From aad0d32376e6ca56770e5c2d4dc5a1462b1e7167 Mon Sep 17 00:00:00 2001
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From: N Balachandran <nbalacha@redhat.com>
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Date: Thu, 13 Dec 2018 12:06:10 +0530
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Subject: [PATCH 457/493] cluster/dht: sync brick root perms on add brick
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If a single brick is added to the volume and the
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newly added brick is the first to respond to a
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dht_revalidate call, its stbuf will not be merged
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into local->stbuf as the brick does not yet have
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a layout. The is_permission_different check therefore
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fails to detect that an attr heal is required as it
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only considers the stbuf values from existing bricks.
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To fix this, merge all stbuf values into local->stbuf
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and use local->prebuf to store the correct directory
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attributes.
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upstream patch: https://review.gluster.org/#/c/glusterfs/+/21611/
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> Change-Id: Ic9e8b04a1ab9ed1248b6b056e3450bbafe32e1bc
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> fixes: bz#1648298
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> Signed-off-by: N Balachandran <nbalacha@redhat.com>
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Change-Id: I329ce48555d15f741d7247290e749f0800d12df8
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BUG: 1648296
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Signed-off-by: N Balachandran <nbalacha@redhat.com>
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Reviewed-on: https://code.engineering.redhat.com/gerrit/158493
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Tested-by: RHGS Build Bot <nigelb@redhat.com>
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Reviewed-by: Susant Palai <spalai@redhat.com>
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Reviewed-by: Raghavendra Gowdappa <rgowdapp@redhat.com>
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---
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tests/bugs/distribute/bug-1368012.t | 11 +++++------
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xlators/cluster/dht/src/dht-common.c | 26 ++++++++------------------
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2 files changed, 13 insertions(+), 24 deletions(-)
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diff --git a/tests/bugs/distribute/bug-1368012.t b/tests/bugs/distribute/bug-1368012.t
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index b861554..0b62635 100644
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--- a/tests/bugs/distribute/bug-1368012.t
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+++ b/tests/bugs/distribute/bug-1368012.t
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@@ -15,7 +15,7 @@ TEST pidof glusterd;
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TEST $CLI volume info;
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## Lets create volume
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-TEST $CLI volume create $V0 $H0:/${V0}{1,2};
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+TEST $CLI volume create $V0 $H0:$B0/${V0}{1,2};
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## Verify volume is created
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EXPECT "$V0" volinfo_field $V0 'Volume Name';
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@@ -36,17 +36,16 @@ TEST chmod 444 $M0
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TEST permission_root=`stat -c "%A" $M0`
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TEST echo $permission_root
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#Add-brick
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-TEST $CLI volume add-brick $V0 $H0:/${V0}3
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+TEST $CLI volume add-brick $V0 $H0:$B0/${V0}3
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EXPECT_WITHIN $PROCESS_UP_TIMEOUT "3" online_brick_count
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#Allow one lookup to happen
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-TEST pushd $M0
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-TEST ls
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+TEST ls $M0
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#Generate another lookup
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echo 3 > /proc/sys/vm/drop_caches
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-TEST ls
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+TEST ls $M0
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#check root permission
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EXPECT_WITHIN "5" $permission_root get_permission $M0
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#check permission on the new-brick
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-EXPECT $permission_root get_permission /${V0}3
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+EXPECT $permission_root get_permission $B0/${V0}3
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cleanup
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diff --git a/xlators/cluster/dht/src/dht-common.c b/xlators/cluster/dht/src/dht-common.c
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index d3a0c8b..2e19036 100644
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--- a/xlators/cluster/dht/src/dht-common.c
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+++ b/xlators/cluster/dht/src/dht-common.c
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@@ -1717,14 +1717,17 @@ dht_revalidate_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
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if (is_dir) {
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ret = dht_dir_has_layout (xattr, conf->xattr_name);
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if (ret >= 0) {
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- if (is_greater_time(local->stbuf.ia_ctime,
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- local->stbuf.ia_ctime_nsec,
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+ if (is_greater_time(local->prebuf.ia_ctime,
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+ local->prebuf.ia_ctime_nsec,
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stbuf->ia_ctime,
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stbuf->ia_ctime_nsec)) {
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/* Choose source */
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local->prebuf.ia_gid = stbuf->ia_gid;
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local->prebuf.ia_uid = stbuf->ia_uid;
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+ local->prebuf.ia_ctime = stbuf->ia_ctime;
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+ local->prebuf.ia_ctime_nsec = stbuf->ia_ctime_nsec;
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+
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if (__is_root_gfid (stbuf->ia_gfid))
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local->prebuf.ia_prot = stbuf->ia_prot;
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}
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@@ -1792,22 +1795,9 @@ dht_revalidate_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
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}
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}
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-
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- /* Update stbuf from the servers where layout is present. This
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- * is an indication that the server is not a newly added brick.
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- * Merging stbuf from newly added brick may result in the added
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- * brick being the source of heal for uid/gid */
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- if (!is_dir || (is_dir &&
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- dht_dir_has_layout (xattr, conf->xattr_name) >= 0)
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- || conf->subvolume_cnt == 1) {
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-
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- dht_iatt_merge (this, &local->stbuf, stbuf, prev);
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- dht_iatt_merge (this, &local->postparent, postparent,
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- prev);
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- } else {
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- /* copy the gfid anyway */
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- gf_uuid_copy (local->stbuf.ia_gfid, stbuf->ia_gfid);
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- }
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+ gf_uuid_copy (local->stbuf.ia_gfid, stbuf->ia_gfid);
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+ dht_iatt_merge (this, &local->stbuf, stbuf, prev);
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+ dht_iatt_merge (this, &local->postparent, postparent, prev);
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local->op_ret = 0;
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--
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1.8.3.1
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