Commit 583ceee2 authored by Joe Thornber's avatar Joe Thornber Committed by Alasdair G Kergon
Browse files

dm thin metadata: zero unused superblock uuid 



Zero the unused uuid when initialising the metadata superblock.

Signed-off-by: default avatarJoe Thornber <ejt@redhat.com>
Signed-off-by: default avatarMike Snitzer <snitzer@redhat.com>
Signed-off-by: default avatarAlasdair G Kergon <agk@redhat.com>
parent 270938ba

drivers/md/dm-thin-metadata.c

+1 −0
Original line number Diff line number Diff line
@@ -455,6 +455,7 @@ static int __write_initial_superblock(struct dm_pool_metadata *pmd) 


	disk_super = dm_block_data(sblock);

	disk_super->flags = 0;

	memset(disk_super->uuid, 0, sizeof(disk_super->uuid));

	disk_super->magic = cpu_to_le64(THIN_SUPERBLOCK_MAGIC);

	disk_super->version = cpu_to_le32(THIN_VERSION);

	disk_super->time = 0;

CRA Git | Maintained and supported by SUSTech CRA and CCSE