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ceph: add new RECOVER mount_state when recovering session

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When recovering a session (a'la recover_session=clean), we want to do
all of the operations that we do on a forced umount, but changing the
mount state to SHUTDOWN is can cause queued MDS requests to fail when
the session comes back. Most of those can idle until the session is
recovered in this situation.

Reserve SHUTDOWN state for forced umount, and make a new RECOVER state
for the forced reconnect situation. Change several tests for equality with
SHUTDOWN to test for that or RECOVER.

Signed-off-by: Jeff Layton <jlayton@kernel.org>
Reviewed-by: Xiubo Li <xiubli@redhat.com>
Reviewed-by: "Yan, Zheng" <zyan@redhat.com>
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
This commit is contained in:
Jeff Layton 2020-09-25 07:55:39 -04:00 • committed by Ilya Dryomov
parent aa5c791053
commit 50c9132ddf
6 changed files with 17 additions and 10 deletions
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1
include/linux/ceph/libceph.h
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@ -104,6 +104,7 @@ enum {
CEPH_MOUNT_UNMOUNTING,
CEPH_MOUNT_UNMOUNTED,
CEPH_MOUNT_SHUTDOWN,
CEPH_MOUNT_RECOVER,
};
static inline unsigned long ceph_timeout_jiffies(unsigned long timeout)