On 10/01/2015 09:40 PM, David Sterba wrote:
On Fri, Aug 14, 2015 at 06:33:01PM +0800, Anand Jain wrote:
>From the issue diagnosable point of view, log if the device path is
changed.
Signed-off-by: Anand Jain <anand.j...@oracle.com>
---
fs/btrfs/volumes.c | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/fs/btrfs/volumes.c b/fs/btrfs/volumes.c
index ebf37a9..dcb10fa 100644
--- a/fs/btrfs/volumes.c
+++ b/fs/btrfs/volumes.c
@@ -595,6 +595,10 @@ static noinline int device_list_add(const char *path,
return -EEXIST;
}
+ printk_in_rcu(KERN_INFO \
+ "BTRFS: device fsid %pU devid %llu old path %s new path
%s\n",
+ disk_super->fsid, devid, rcu_str_deref(device->name),
path);
I don't think that the message should be put into device_list_add. Its
only callsite in btrfs_scan_one_device prints some device info messages
so it would be better to extend and use the return value if possible.
Right. will fix it.
Thanks, Anand
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