From 0e65a32c8a569db363048e17a708b1a0913adbef Mon Sep 17 00:00:00 2001 From: Olga Kornievskaia Date: Fri, 14 Jun 2019 14:38:40 -0400 Subject: NFS: handle source server reboot When the source server reboots after a server-to-server copy was issued, we need to retry the copy from COPY_NOTIFY. We need to detect that the source server rebooted and there is a copy waiting on a destination server and wake it up. Signed-off-by: Olga Kornievskaia --- fs/nfs/nfs4file.c | 3 +++ 1 file changed, 3 insertions(+) (limited to 'fs/nfs/nfs4file.c') diff --git a/fs/nfs/nfs4file.c b/fs/nfs/nfs4file.c index a932fc9ca9c4..2af30b7f5bfd 100644 --- a/fs/nfs/nfs4file.c +++ b/fs/nfs/nfs4file.c @@ -146,6 +146,7 @@ static ssize_t __nfs4_copy_file_range(struct file *file_in, loff_t pos_in, return -EOPNOTSUPP; if (file_inode(file_in) == file_inode(file_out)) return -EOPNOTSUPP; +retry: if (!nfs42_files_from_same_server(file_in, file_out)) { cn_resp = kzalloc(sizeof(struct nfs42_copy_notify_res), GFP_NOFS); @@ -164,6 +165,8 @@ static ssize_t __nfs4_copy_file_range(struct file *file_in, loff_t pos_in, nss, cnrs); out: kfree(cn_resp); + if (ret == -EAGAIN) + goto retry; return ret; } -- cgit v1.2.3