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From d68103f77527b1f7a5a3cf1fdc4029a9181e6799 Mon Sep 17 00:00:00 2001
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Message-Id: <d68103f77527b1f7a5a3cf1fdc4029a9181e6799@dist-git>
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From: Michal Privoznik <mprivozn@redhat.com>
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Date: Wed, 31 May 2017 15:20:17 +0200
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Subject: [PATCH] qemu: mkdir memory_backing_dir on startup
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https://bugzilla.redhat.com/show_bug.cgi?id=1214369
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In 48d9e6cdcc and friends we've allowed users to back guest
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memory by a file inside the host. And in order to keep things
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manageable the memory_backing_dir variable was introduced to
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qemu.conf to specify the directory where the files are kept.
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However, libvirt's policy is that directories are created on
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domain startup if they don't exist. We've missed this one.
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Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
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(cherry picked from commit 3bab51e05656332f7952958705e59046ce30daa3)
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Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
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Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
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---
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src/qemu/qemu_driver.c | 12 ++++++++++++
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1 file changed, 12 insertions(+)
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diff --git a/src/qemu/qemu_driver.c b/src/qemu/qemu_driver.c
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index c31d07a659..b741c1b5a6 100644
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--- a/src/qemu/qemu_driver.c
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+++ b/src/qemu/qemu_driver.c
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@@ -706,6 +706,11 @@ qemuStateInitialize(bool privileged,
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cfg->nvramDir);
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goto error;
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}
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+ if (virFileMakePath(cfg->memoryBackingDir) < 0) {
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+ virReportSystemError(errno, _("Failed to create memory backing dir %s"),
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+ cfg->memoryBackingDir);
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+ goto error;
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+ }
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qemu_driver->qemuImgBinary = virFindFileInPath("qemu-img");
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@@ -830,6 +835,13 @@ qemuStateInitialize(bool privileged,
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(int) cfg->group);
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goto error;
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}
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+ if (chown(cfg->memoryBackingDir, cfg->user, cfg->group) < 0) {
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+ virReportSystemError(errno,
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+ _("unable to set ownership of '%s' to %d:%d"),
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+ cfg->memoryBackingDir, (int) cfg->user,
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+ (int) cfg->group);
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+ goto error;
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+ }
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run_uid = cfg->user;
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run_gid = cfg->group;
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--
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2.13.1
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