fstests: allow overlay SCRATCH_DEV to be a base fs mount point

When configure SCRATCH_DEV to a mount point (and not to a directory therein)
then user will get a false positive error in scratch tests:

 $SCRATCH_DEV=/mnt/base/scratch is mounted but not on $SCRATCH_MNT=/mnt/scratch
 Already mounted result:
 /dev/sda6 on /mnt/base/scratch type xfs (rw,relatime,attr2,inode64,noquota)

This is due to the wrong `grep -F $SCRATCH_DEV` which matches the mount
point instead of the device in that mount.
Fix _check_mounted_on() to grep the pattern "$dev on " and "$dev on $mnt"
instead of just grepping for "$dev" and "$mnt" without the " on " anchor.

Signed-off-by: Amir Goldstein <amir73il@gmail.com>
Reviewed-by: Eryu Guan <eguan@redhat.com>
Signed-off-by: Eryu Guan <eguan@redhat.com>
This commit is contained in:
Amir Goldstein
2017-02-28 14:18:32 +02:00
committed by Eryu Guan
parent 4e965d8516
commit db24846eb3
+5 -3
View File
@@ -1368,12 +1368,14 @@ _check_mounted_on()
local type=$5
# Note that we use -F here so grep doesn't try to interpret an NFS over
# IPv6 server as a regular expression
local mount_rec=`_mount | grep -F "$dev"`
# IPv6 server as a regular expression. Because of that, we cannot use
# ^$dev so we use "$dev on " to avoid matching $dev to mount point field
# for overlay case, where $dev is a directory.
local mount_rec=`_mount | grep -F "$dev on "`
[ -n "$mount_rec" ] || return 1 # 1 = not mounted
# if it's mounted, make sure its on $mnt
if ! (echo $mount_rec | grep -q "$mnt")
if ! (echo $mount_rec | grep -q "$dev on $mnt")
then
echo "$devname=$dev is mounted but not on $mntname=$mnt - aborting"
echo "Already mounted result:"