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authorOlga Kornievskaia <kolga@netapp.com>2018-08-13 15:33:01 -0400
committerAnna Schumaker <Anna.Schumaker@Netapp.com>2018-08-13 17:04:23 -0400
commite4648aa4f98a87cf0a83f73a5864cede073053a0 (patch)
treec6e48236e743a8be03bf7062d33e98d8e550aecb /fs/nfs/nfs4state.c
parent6b8d84e2f1299a5876ed812b137c49686cc85c7c (diff)
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.c16
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, &copy->parent_state->stateid.other, NFS4_STATEID_SIZE))
+ continue;
+ copy->flags = 1;
+ complete(&copy->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;