[PATCH 5.16 029/227] btrfs: send: in case of IO error log it

Greg Kroah-Hartman
2022-02-21T09:48:08Z

From: Dāvis Mosāns <davispuh@gmail.com>

commit 2e7be9db125a0bf940c5d65eb5c40d8700f738b5 upstream.

Currently if we get IO error while doing send then we abort without
logging information about which file caused issue. So log it to help
with debugging.

CC: stable@vger.kernel.org # 4.9+
Signed-off-by: Dāvis Mosāns <davispuh@gmail.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
fs/btrfs/send.c | 4 ++++
1 file changed, 4 insertions(+)

--- a/fs/btrfs/send.c
+++ b/fs/btrfs/send.c
@@ -4983,6 +4983,10 @@ static int put_file_data(struct send_ctx
lock_page(page);
if (!PageUptodate(page)) {
unlock_page(page);
+ btrfs_err(fs_info,
+ "send: IO error at offset %llu for inode %llu root %llu",
+ page_offset(page), sctx->cur_ino,
+ sctx->send_root->root_key.objectid);
put_page(page);
ret = -EIO;
break;