| commit | 568e8c494ded95a28c5dd8b79b4d3ffb95b6d845 | |
| author | Andy Adamson <andros@netapp.com> | |
| Tue, 1 Mar 2011 01:34:22 +0000 (1 01:34 +0000) | ||
| committer | Trond Myklebust <Trond.Myklebust@netapp.com> | |
| Fri, 11 Mar 2011 20:38:43 +0000 (11 15:38 -0500) | ||
| tree | 00e71f79575635c0ddfcd1210e263088cc121da2 | treesnapshot (tar.gz zip) |
| parent | ea8eecdd11ee6becd09c095c8efa88aa7df95961 | commitdiff |
NFSv4.1: turn off pNFS on ds connection failure
If a data server is unavailable, go through MDS.
Mark the deviceid containing the data server as a negative cache entry.
Do not try to connect to any data server on a deviceid marked as a negative
cache entry. Mark any layout that tries to use the marked deviceid as failed.
Inodes with a layout marked as fails will not use the layout for I/O, and will
not perform any more layoutgets.
Inodes without a layout will still do layoutget, but the layout will get
marked immediately.
Signed-off-by: Andy Adamson <andros@netapp.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
If a data server is unavailable, go through MDS.
Mark the deviceid containing the data server as a negative cache entry.
Do not try to connect to any data server on a deviceid marked as a negative
cache entry. Mark any layout that tries to use the marked deviceid as failed.
Inodes with a layout marked as fails will not use the layout for I/O, and will
not perform any more layoutgets.
Inodes without a layout will still do layoutget, but the layout will get
marked immediately.
Signed-off-by: Andy Adamson <andros@netapp.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
| fs/nfs/nfs4filelayout.c | diffblobblamehistory | |
| fs/nfs/nfs4filelayout.h | diffblobblamehistory | |
| fs/nfs/nfs4filelayoutdev.c | diffblobblamehistory | |
| fs/nfs/pnfs.c | diffblobblamehistory |