[lxc-devel] [PATCH] check for btrfs fs in should_default_to_snapshot
Christian Brauner
christian.brauner at mailbox.org
Thu Jan 14 20:39:05 UTC 2016
Check if we're really on a btrfs filesystem before we call btrfs_same_fs().
Otherwise we will report misleading errors although everything went fine.
Signed-off-by: Christian Brauner <christian.brauner at mailbox.org>
---
src/lxc/bdev/lxcbtrfs.c | 2 +-
src/lxc/bdev/lxcoverlay.c | 2 +-
src/lxc/lxccontainer.c | 4 ++++
3 files changed, 6 insertions(+), 2 deletions(-)
diff --git a/src/lxc/bdev/lxcbtrfs.c b/src/lxc/bdev/lxcbtrfs.c
index 2db7c87..80b22fd 100644
--- a/src/lxc/bdev/lxcbtrfs.c
+++ b/src/lxc/bdev/lxcbtrfs.c
@@ -40,7 +40,7 @@
#include "lxcrsync.h"
#include "utils.h"
-lxc_log_define(btrfs, lxc);
+lxc_log_define(lxcbtrfs, lxc);
/* defined in lxccontainer.c: needs to become common helper */
extern char *dir_new_path(char *src, const char *oldname, const char *name,
diff --git a/src/lxc/bdev/lxcoverlay.c b/src/lxc/bdev/lxcoverlay.c
index d06d24f..4d30f3c 100644
--- a/src/lxc/bdev/lxcoverlay.c
+++ b/src/lxc/bdev/lxcoverlay.c
@@ -36,7 +36,7 @@
#include "lxcrsync.h"
#include "utils.h"
-lxc_log_define(overlay, lxc);
+lxc_log_define(lxcoverlay, lxc);
static char *ovl_name;
diff --git a/src/lxc/lxccontainer.c b/src/lxc/lxccontainer.c
index 490a59d..7f2a390 100644
--- a/src/lxc/lxccontainer.c
+++ b/src/lxc/lxccontainer.c
@@ -2833,6 +2833,10 @@ bool should_default_to_snapshot(struct lxc_container *c0,
snprintf(p0, l0, "%s/%s", c0->config_path, c0->name);
snprintf(p1, l1, "%s/%s", c1->config_path, c1->name);
+
+ if (!is_btrfs_fs(p0) || !is_btrfs_fs(p1))
+ return false;
+
return btrfs_same_fs(p0, p1) == 0;
}
--
2.7.0
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