diff options
| author | Andy Adamson <andros@netapp.com> | 2012-04-27 17:53:53 -0400 |
|---|---|---|
| committer | Trond Myklebust <Trond.Myklebust@netapp.com> | 2012-05-19 17:55:33 -0400 |
| commit | 041245c88a29273788e8eff1353bc6e1f56c61df (patch) | |
| tree | 0810bad95fe40c6fbf1a1dc13cb3ba0305ba30d3 /fs/nfs/pnfs.c | |
| parent | b4a2967e52523dbf0281b52c042f9042c6082f99 (diff) | |
| download | linux-3.10-041245c88a29273788e8eff1353bc6e1f56c61df.tar.gz linux-3.10-041245c88a29273788e8eff1353bc6e1f56c61df.tar.bz2 linux-3.10-041245c88a29273788e8eff1353bc6e1f56c61df.zip | |
NFSv4.1 resend LAYOUTGET on data server invalid layout errors
The "invalid layout" class of errors is handled by destroying the layout and
getting a new layout from the server. Currently, the layout must be
destroyed before a new layout can be obtained.
This means that all references (e.g.lsegs) to the "to be destroyed" layout
header must be dropped before it can be destroyed. This in turn means waiting
for all in flight RPC's using the old layout as well as draining the data
server session slot table wait queue.
Set the NFS_LAYOUT_INVALID flag to redirect I/O to the MDS while waiting for
the old layout to be destroyed.
Signed-off-by: Andy Adamson <andros@netapp.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Diffstat (limited to 'fs/nfs/pnfs.c')
| -rw-r--r-- | fs/nfs/pnfs.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/fs/nfs/pnfs.c b/fs/nfs/pnfs.c index e48017f67fe..5d09a36b2cd 100644 --- a/fs/nfs/pnfs.c +++ b/fs/nfs/pnfs.c @@ -455,6 +455,7 @@ pnfs_destroy_layout(struct nfs_inode *nfsi) spin_unlock(&nfsi->vfs_inode.i_lock); pnfs_free_lseg_list(&tmp_list); } +EXPORT_SYMBOL_GPL(pnfs_destroy_layout); /* * Called by the state manger to remove all layouts established under an |