From 8f2ceaa7b42a6df21eed621b88037af2c4cd8257 Mon Sep 17 00:00:00 2001 From: Anand Jain Date: Tue, 13 Feb 2018 11:53:43 +0800 Subject: [PATCH] btrfs: log, when replace, is canceled by the user For debugging or administration purposes, we would want to know if and when the user cancels the replace, to complement the existing messages when dev-replace starts or finishes. Signed-off-by: Anand Jain Reviewed-by: David Sterba [ update changelog, fold fix for RCU warning from Nikolay ] Signed-off-by: David Sterba --- fs/btrfs/dev-replace.c | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/fs/btrfs/dev-replace.c b/fs/btrfs/dev-replace.c index c523478b3de2..e279f04b3388 100644 --- a/fs/btrfs/dev-replace.c +++ b/fs/btrfs/dev-replace.c @@ -703,6 +703,7 @@ int btrfs_dev_replace_cancel(struct btrfs_fs_info *fs_info) { struct btrfs_dev_replace *dev_replace = &fs_info->dev_replace; struct btrfs_device *tgt_device = NULL; + struct btrfs_device *src_device = NULL; struct btrfs_trans_handle *trans; struct btrfs_root *root = fs_info->tree_root; int result; @@ -724,6 +725,7 @@ int btrfs_dev_replace_cancel(struct btrfs_fs_info *fs_info) case BTRFS_IOCTL_DEV_REPLACE_STATE_SUSPENDED: result = BTRFS_IOCTL_DEV_REPLACE_RESULT_NO_ERROR; tgt_device = dev_replace->tgtdev; + src_device = dev_replace->srcdev; dev_replace->tgtdev = NULL; dev_replace->srcdev = NULL; break; @@ -741,6 +743,12 @@ int btrfs_dev_replace_cancel(struct btrfs_fs_info *fs_info) } ret = btrfs_commit_transaction(trans); WARN_ON(ret); + + btrfs_info_in_rcu(fs_info, + "dev_replace from %s (devid %llu) to %s canceled", + btrfs_dev_name(src_device), src_device->devid, + btrfs_dev_name(tgt_device)); + if (tgt_device) btrfs_destroy_dev_replace_tgtdev(fs_info, tgt_device); -- 2.45.2