The patch below does not apply to the 4.9-stable tree.
If someone wants it applied there, or to any other stable or longterm
tree, then please email the backport, including the original git commit
id to <stable@xxxxxxxxxxxxxxx>.
thanks,
greg k-h
------------------ original commit in Linus's tree ------------------
>From 0d228ece59a35a9b9e8ff0d40653234a6d90f61e Mon Sep 17 00:00:00 2001
From: Anand Jain <anand.jain@xxxxxxxxxx>
Date: Sun, 11 Nov 2018 22:22:17 +0800
Subject: [PATCH] btrfs: dev-replace: go back to suspended state if target
device is missing
At the time of forced unmount we place the running replace to
BTRFS_IOCTL_DEV_REPLACE_STATE_SUSPENDED state, so when the system comes
back and expect the target device is missing.
Then let the replace state continue to be in
BTRFS_IOCTL_DEV_REPLACE_STATE_SUSPENDED state instead of
BTRFS_IOCTL_DEV_REPLACE_STATE_STARTED as there isn't any matching scrub
running as part of replace.
Fixes: e93c89c1aaaa ("Btrfs: add new sources for device replace code")
CC: stable@xxxxxxxxxxxxxxx # 4.4+
Signed-off-by: Anand Jain <anand.jain@xxxxxxxxxx>
Reviewed-by: David Sterba <dsterba@xxxxxxxx>
Signed-off-by: David Sterba <dsterba@xxxxxxxx>
diff --git a/fs/btrfs/dev-replace.c b/fs/btrfs/dev-replace.c
index 32da6901dc88..11df8f778b63 100644
--- a/fs/btrfs/dev-replace.c
+++ b/fs/btrfs/dev-replace.c
@@ -890,6 +890,8 @@ int btrfs_resume_dev_replace_async(struct btrfs_fs_info *fs_info)
"cannot continue dev_replace, tgtdev is missing");
btrfs_info(fs_info,
"you may cancel the operation after 'mount -o degraded'");
+ dev_replace->replace_state =
+ BTRFS_IOCTL_DEV_REPLACE_STATE_SUSPENDED;
btrfs_dev_replace_write_unlock(dev_replace);
return 0;
}
