If the UUID field is NULL, e2fsck will try to generate and set a new
UUID. This will cause massive problems if the metadata_csum feature
is set, so avoid doing so in that case.
Signed-off-by: Theodore Ts'o <tytso@xxxxxxx>
---
e2fsck/super.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/e2fsck/super.c b/e2fsck/super.c
index e09c14c..dec70bd 100644
--- a/e2fsck/super.c
+++ b/e2fsck/super.c
@@ -756,6 +756,7 @@ void check_super_block(e2fsck_t ctx)
* if the id changes under the kernel remounting rw may fail.
*/
if (!(ctx->options & E2F_OPT_READONLY) && uuid_is_null(sb->s_uuid) &&
+ !ext2fs_has_feature_metadata_csum(ctx->fs->super) &&
(!csum_flag || !(ctx->mount_flags & EXT2_MF_MOUNTED))) {
if (fix_problem(ctx, PR_0_ADD_UUID, &pctx)) {
uuid_generate(sb->s_uuid);
--
2.5.0
--
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