Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20;
From:   =?UTF-8?q?D=C4=81vis=20Mos=C4=81ns?= <davispuh@gmail.com>
To:     linux-btrfs@vger.kernel.org
Cc:     Chris Mason <clm@fb.com>, Josef Bacik <josef@toxicpanda.com>,
        David Sterba <dsterba@suse.com>, linux-kernel@vger.kernel.org,
        =?UTF-8?q?D=C4=81vis=20Mos=C4=81ns?= <davispuh@gmail.com>
Subject: [PATCH v3] btrfs: send: in case of IO error log it
Date:   Sat,  5 Feb 2022 20:48:23 +0200
Message-Id: <20220205184822.2968-1-davispuh@gmail.com>
In-Reply-To: <20220202201437.7718-1-davispuh@gmail.com>
References: <20220202201437.7718-1-davispuh@gmail.com>
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
Precedence: bulk

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.

Signed-off-by: Dāvis Mosāns <davispuh@gmail.com>
---
 fs/btrfs/send.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/fs/btrfs/send.c b/fs/btrfs/send.c
index d8ccb62aa7d2..b1f75fde4a19 100644
--- a/fs/btrfs/send.c
+++ b/fs/btrfs/send.c
@@ -4999,6 +4999,8 @@ static int put_file_data(struct send_ctx *sctx, u64 offset, u32 len)
 			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;
-- 
2.35.1