diff options
| author | Andy Adamson <andros@netapp.com> | 2011-06-16 01:52:40 +0400 |
|---|---|---|
| committer | Trond Myklebust <Trond.Myklebust@netapp.com> | 2011-07-12 21:40:29 +0400 |
| commit | c47abcf8ff4d0c56d20ce541e80d3e1c975f54b5 (patch) | |
| tree | 9fc0bfddd899e415f9943a403b647ed7b05da71b /fs/nfs/pnfs_dev.c | |
| parent | a56aaa02b1f723e28b41d339ddff02e958d32d43 (diff) | |
| download | linux-c47abcf8ff4d0c56d20ce541e80d3e1c975f54b5.tar.xz | |
NFSv4.1: do not use deviceids after MDS clientid invalidation
Mark all deviceids established under an expired MDS clientid as invalid.
Stop all new i/o through DS and send through the MDS.
Don't use any new LAYOUTGETs that use the invalid deviceid. Purge all layouts
established under the expired MDS clientid.
Remove the MDS clientid deviceid and data servers reference
Signed-off-by: Andy Adamson <andros@netapp.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Diffstat (limited to 'fs/nfs/pnfs_dev.c')
| -rw-r--r-- | fs/nfs/pnfs_dev.c | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/fs/nfs/pnfs_dev.c b/fs/nfs/pnfs_dev.c index fb9498d91f6a..6fda5228ef56 100644 --- a/fs/nfs/pnfs_dev.c +++ b/fs/nfs/pnfs_dev.c @@ -156,6 +156,7 @@ nfs4_init_deviceid_node(struct nfs4_deviceid_node *d, INIT_HLIST_NODE(&d->tmpnode); d->ld = ld; d->nfs_client = nfs_client; + d->flags = 0; d->deviceid = *id; atomic_set(&d->ref, 1); } @@ -253,3 +254,22 @@ nfs4_deviceid_purge_client(const struct nfs_client *clp) for (h = 0; h < NFS4_DEVICE_ID_HASH_SIZE; h++) _deviceid_purge_client(clp, h); } + +/* + * Stop use of all deviceids associated with an nfs_client + */ +void +nfs4_deviceid_mark_client_invalid(struct nfs_client *clp) +{ + struct nfs4_deviceid_node *d; + struct hlist_node *n; + int i; + + rcu_read_lock(); + for (i = 0; i < NFS4_DEVICE_ID_HASH_SIZE; i ++){ + hlist_for_each_entry_rcu(d, n, &nfs4_deviceid_cache[i], node) + if (d->nfs_client == clp) + set_bit(NFS_DEVICEID_INVALID, &d->flags); + } + rcu_read_unlock(); +} |