Currently, UMH and Legacy trackers are disabled in containers.
But existent logic can lookup nfs4_recoverydir in a container, and in this
case will try to init Legacy tracker and skip nfsdcld client tracker.
This actually means, that no client tracker will be started in a container at
all, because Legacy tracker init will return -EINVAL for a container.
So, let's change "-EINVAL" on "-ENOTSUPP" for legacy tracker init call in a
container and in case of this error code, try nfsdcld client tracker instead
of returning a error.
Signed-off-by: Stanislav Kinsbursky <skinsbursky@xxxxxxxxxxxxx>
---
fs/nfsd/nfs4recover.c | 12 ++++++++----
1 files changed, 8 insertions(+), 4 deletions(-)
diff --git a/fs/nfsd/nfs4recover.c b/fs/nfsd/nfs4recover.c
index e0ae1cf..8aa069a 100644
--- a/fs/nfsd/nfs4recover.c
+++ b/fs/nfsd/nfs4recover.c
@@ -524,7 +524,7 @@ nfsd4_legacy_tracking_init(struct net *net)
if (net != &init_net) {
WARN(1, KERN_ERR "NFSD: attempt to initialize legacy client "
"tracking in a container!\n");
- return -EINVAL;
+ return -ENOTSUPP;
}
status = nfs4_legacy_state_init(net);
@@ -1285,14 +1285,17 @@ nfsd4_client_tracking_init(struct net *net)
/*
* See if the recoverydir exists and is a directory. If it is,
* then use the legacy ops.
+ * If legacy ops init return -ENOSUPP, then we are in a container and
+ * should try nfsdcld client tracking.
*/
nn->client_tracking_ops = &nfsd4_legacy_tracking_ops;
status = kern_path(nfs4_recoverydir(), LOOKUP_FOLLOW, &path);
if (!status) {
- status = S_ISDIR(path.dentry->d_inode->i_mode);
+ if (S_ISDIR(path.dentry->d_inode->i_mode))
+ status = nn->client_tracking_ops->init(net);
path_put(&path);
- if (status)
- goto do_init;
+ if (status != -ENOTSUPP)
+ goto do_exit;
}
/* Finally, try to use nfsdcld */
@@ -1302,6 +1305,7 @@ nfsd4_client_tracking_init(struct net *net)
"nfsdcltrack.\n");
do_init:
status = nn->client_tracking_ops->init(net);
+do_exit:
if (status) {
printk(KERN_WARNING "NFSD: Unable to initialize client "
"recovery tracking! (%d)\n", status);
--
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