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commit cc2c0628cb2d3aaa37db1b3bb6cc5d7860dac6cb
Author: Joel Becker <joel.becker at oracle.com>
Date: Fri Aug 22 16:34:46 2008 -0700
ocfs2_controld: Handle additional mounts racing umount(2).
ocfs2_controld only allows one MOUNT/UNMOUNT operation at a time.
Racing operations will receive EBUSY.
Well, if the kernel is unmounting while an additional mount is in
progress, the daemon won't clean up after a failed additional mount.
mount /dev/sdb1 /ocfs2
mount /dev/sdb1 /ocfs3
umount /ocfs2
# Gets there first, umount(2) happens.
# ->put_super(7) calls ocfs2_hb_ctl,
# which gets -EBUSY from
# o2cb_group_leave(). The filesystem is
# no longer mounted in the kernel.
The solution is to clear the ms_additional flag when we notice this
race. The daemon, seeing it is about to send EBUSY to the unmount,
clears ms_additional on the mount of /ocfs3. Then, when that mount
fails, it knows to exit the group.
Signed-off-by: Joel Becker <joel.becker at oracle.com>
Signed-off-by: Mark Fasheh <mfasheh at suse.com>
commit da6763762265773c382375410e71cc75e67742ba
Author: Joel Becker <joel.becker at oracle.com>
Date: Fri Aug 22 16:23:04 2008 -0700
ocfs2_controld: Fail-fast when leaving a mountgroup unexpectedly.
When ocfs2_controld leaves a group unexpectedly (notified from cpg,
unclean exit), it currently sends node down events to the filesystem.
This doesn't work, because the filesystem BUG()s when given the local
node number.
A better solution is to fail-fast. Exit right when we discover we are
leaving a live group unexpectedly. If the group isn't live, clean up
our state and continue.
Signed-off-by: Joel Becker <joel.becker at oracle.com>
Signed-off-by: Mark Fasheh <mfasheh at suse.com>
-----------------------------------------------------------------------
Summary of changes:
ocfs2_controld/mount.c | 67 +++++++++++++++++++++++++++++++++++++----------
1 files changed, 52 insertions(+), 15 deletions(-)
hooks/post-receive
--
Tools to manage the ocfs2 filesystem.