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| author | Olga Kornievskaia <kolga@netapp.com> | 2018-08-13 15:33:01 -0400 |
|---|---|---|
| committer | Anna Schumaker <Anna.Schumaker@Netapp.com> | 2018-08-13 17:04:23 -0400 |
| commit | e4648aa4f98a87cf0a83f73a5864cede073053a0 (patch) | |
| tree | c6e48236e743a8be03bf7062d33e98d8e550aecb /fs/nfs/nfs4state.c | |
| parent | 6b8d84e2f1299a5876ed812b137c49686cc85c7c (diff) | |
| download | talos-op-linux-e4648aa4f98a87cf0a83f73a5864cede073053a0.tar.gz talos-op-linux-e4648aa4f98a87cf0a83f73a5864cede073053a0.zip | |
NFS recover from destination server reboot for copies
Mark the destination state to indicate a server-side copy is
happening. On detecting a reboot and recovering open state check
if any state is engaged in a server-side copy, if so, find the
copy and mark it and then signal the waiting thread. Upon wakeup,
if copy was marked then propage EAGAIN to the nfsd_copy_file_range
and restart the copy from scratch.
Signed-off-by: Olga Kornievskaia <kolga@netapp.com>
Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
Diffstat (limited to 'fs/nfs/nfs4state.c')
| -rw-r--r-- | fs/nfs/nfs4state.c | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/fs/nfs/nfs4state.c b/fs/nfs/nfs4state.c index f1b27e895a94..b6882e09d0f4 100644 --- a/fs/nfs/nfs4state.c +++ b/fs/nfs/nfs4state.c @@ -1589,6 +1589,22 @@ restart: } clear_bit(NFS_STATE_RECLAIM_NOGRACE, &state->flags); +#ifdef CONFIG_NFS_V4_2 + if (test_bit(NFS_CLNT_DST_SSC_COPY_STATE, &state->flags)) { + struct nfs4_copy_state *copy; + + spin_lock(&sp->so_server->nfs_client->cl_lock); + list_for_each_entry(copy, &sp->so_server->ss_copies, copies) { + if (memcmp(&state->stateid.other, ©->parent_state->stateid.other, NFS4_STATEID_SIZE)) + continue; + copy->flags = 1; + complete(©->completion); + printk("AGLO: server rebooted waking up the copy\n"); + break; + } + spin_unlock(&sp->so_server->nfs_client->cl_lock); + } +#endif /* CONFIG_NFS_V4_2 */ nfs4_put_open_state(state); spin_lock(&sp->so_lock); goto restart; |
