[PATCH RFC v2] xfs: Print XFS UUID on mount and umount events.

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As of now only device names are printed out over __xfs_printk().
The device names are not persistent across reboots which in case
of searching for origin of corruption brings another task to properly
identify the devices. This patch add XFS UUID upon every mount/umount
event which will make the identification much easier.

Signed-off-by: Lukas Herbolt <lukas@xxxxxxxxxxx>
---
V2: Drop void casts and fix long lines

 fs/xfs/xfs_log.c   | 10 ++++++----
 fs/xfs/xfs_super.c |  2 +-
 2 files changed, 7 insertions(+), 5 deletions(-)

diff --git a/fs/xfs/xfs_log.c b/fs/xfs/xfs_log.c
index 06041834daa31..8f4f671fd80d5 100644
--- a/fs/xfs/xfs_log.c
+++ b/fs/xfs/xfs_log.c
@@ -570,12 +570,14 @@ xfs_log_mount(
 	int		min_logfsbs;
 
 	if (!(mp->m_flags & XFS_MOUNT_NORECOVERY)) {
-		xfs_notice(mp, "Mounting V%d Filesystem",
-			   XFS_SB_VERSION_NUM(&mp->m_sb));
+		xfs_notice(mp, "Mounting V%d Filesystem %pU",
+			   XFS_SB_VERSION_NUM(&mp->m_sb),
+			   &mp->m_sb.sb_uuid);
 	} else {
 		xfs_notice(mp,
-"Mounting V%d filesystem in no-recovery mode. Filesystem will be inconsistent.",
-			   XFS_SB_VERSION_NUM(&mp->m_sb));
+"Mounting V%d filesystem %pU in no-recovery mode. Filesystem will be inconsistent.",
+			   XFS_SB_VERSION_NUM(&mp->m_sb),
+			   &mp->m_sb.sb_uuid);
 		ASSERT(mp->m_flags & XFS_MOUNT_RDONLY);
 	}
 
diff --git a/fs/xfs/xfs_super.c b/fs/xfs/xfs_super.c
index e5e0713bebcd8..a4b8a5ad8039f 100644
--- a/fs/xfs/xfs_super.c
+++ b/fs/xfs/xfs_super.c
@@ -1043,7 +1043,7 @@ xfs_fs_put_super(
 	if (!sb->s_fs_info)
 		return;
 
-	xfs_notice(mp, "Unmounting Filesystem");
+	xfs_notice(mp, "Unmounting Filesystem %pU", &mp->m_sb.sb_uuid);
 	xfs_filestream_unmount(mp);
 	xfs_unmountfs(mp);
 
-- 
2.31.1




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