diff options
| author | Yan, Zheng <zyan@redhat.com> | 2019-07-25 14:16:47 +0200 |
|---|---|---|
| committer | Ilya Dryomov <idryomov@gmail.com> | 2019-09-16 12:06:24 +0200 |
| commit | 131d7eb4faa1fc06b08b633aff0b59ae85f1938e (patch) | |
| tree | 3d9fae4a3ef8e3d6eac0614a91cb83ac33583f4b /Documentation | |
| parent | ceph: invalidate all write mode filp after reconnect (diff) | |
| download | linux-131d7eb4faa1fc06b08b633aff0b59ae85f1938e.tar.xz linux-131d7eb4faa1fc06b08b633aff0b59ae85f1938e.zip | |
ceph: auto reconnect after blacklisted
Make client use osd reply and session message to infer if itself is
blacklisted. Client reconnect to cluster using new entity addr if it
is blacklisted. Auto reconnect is limited to once every 30 minutes.
Auto reconnect is disabled by default. It can be enabled/disabled by
recover_session=<no|clean> mount option. In 'clean' mode, client drops
any dirty data/metadata, invalidates page caches and invalidates all
writable file handles. After reconnect, file locks become stale because
MDS loses track of them. If an inode contains any stale file locks,
read/write on the indoe are not allowed until applications release all
stale file locks.
Signed-off-by: "Yan, Zheng" <zyan@redhat.com>
Reviewed-by: Jeff Layton <jlayton@kernel.org>
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
Diffstat (limited to 'Documentation')
| -rw-r--r-- | Documentation/filesystems/ceph.txt | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/Documentation/filesystems/ceph.txt b/Documentation/filesystems/ceph.txt index d2c6a5ccf0f5..b19b6a03f91c 100644 --- a/Documentation/filesystems/ceph.txt +++ b/Documentation/filesystems/ceph.txt @@ -158,6 +158,20 @@ Mount Options copies. Currently, it's only used in copy_file_range, which will revert to the default VFS implementation if this option is used. + recover_session=<no|clean> + Set auto reconnect mode in the case where the client is blacklisted. The + available modes are "no" and "clean". The default is "no". + + * no: never attempt to reconnect when client detects that it has been + blacklisted. Operations will generally fail after being blacklisted. + + * clean: client reconnects to the ceph cluster automatically when it + detects that it has been blacklisted. During reconnect, client drops + dirty data/metadata, invalidates page caches and writable file handles. + After reconnect, file locks become stale because the MDS loses track + of them. If an inode contains any stale file locks, read/write on the + inode is not allowed until applications release all stale file locks. + More Information ================ |