ldiskfs/kernel_patches/patches/rhel7.4/ext4-dont-check-before-replay.patch

   1 Index: linux-stage/fs/ext4/super.c
   2 When ldiskfs run in failover mode whith read-only disk.
   3 Part of allocation updates are lost and ldiskfs may fail
   4 while mounting this is due to inconsistent state of
   5 group-descriptor. Group-descriptor check is added after
   6 journal replay.
   7 ===================================================================
   8 --- linux-stage/fs/ext4/super.c 2016-11-06 15:15:30.892386878 +0530
   9 +++ linux-stage.orig.1/fs/ext4/super.c  2016-11-08 10:56:45.579892189 +0530
  10 @@ -3980,10 +3980,6 @@
  11                         goto failed_mount2;
  12                 }
  13         }
  14 -       if (!ext4_check_descriptors(sb, logical_sb_block, &first_not_zeroed)) {
  15 -               ext4_msg(sb, KERN_ERR, "group descriptors corrupted!");
  16 -               goto failed_mount2;
  17 -       }
  18
  19         sbi->s_gdb_count = db_count;
  20         get_random_bytes(&sbi->s_next_generation, sizeof(u32));
  21 @@ -4104,6 +4100,12 @@
  22         sbi->s_journal->j_commit_callback = ext4_journal_commit_callback;
  23
  24  no_journal:
  25 +
  26 +       if (!ext4_check_descriptors(sb, logical_sb_block, &first_not_zeroed)) {
  27 +               ext4_msg(sb, KERN_ERR, "group descriptors corrupted!");
  28 +               goto failed_mount_wq;
  29 +       }
  30 +
  31         /*
  32          * Get the # of file system overhead blocks from the
  33          * superblock if present.