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    Subjectneed multiple e2fsck runs
    last night I got another ext2 fs corruption with 2.2.10 which showed up
    in syslog first with many

    Jul 8 03:33:16 turtle kernel: EXT2-fs error (device sd(8,7)): ext2_new_block: Free blocks count corrupted for block group 87

    messages, and

    Jul 8 11:20:04 turtle kernel: EXT2-fs warning: mounting fs with errors, running e2fsck is recommended
    Jul 8 11:20:05 turtle kernel: EXT2-fs error (device sd(8,7)): ext2_check_blocks_bitmap: Wrong free blocks count for group 87, stored = 65535, counted = 0
    Jul 8 11:20:07 turtle kernel: EXT2-fs error (device sd(8,7)): ext2_check_blocks_bitmap: Wrong free blocks count in super block, stored = 217245, counted = 217246

    when unmount/remounting.


    when trying to clean up those errors with e2fsck it took 5 (five!)
    runs of e2fsck before all those `bitmap errors' are gone.
    here is the full log of all e2fsck runs:

    ===============================================================================
    Script started on Thu Jul 8 11:23:14 1999
    root # e2fsck /dev/sda7
    e2fsck 1.14, 9-Jan-1999 for EXT2 FS 0.5b, 95/08/09
    /dev/sda7 contains a file system with errors, check forced.
    Pass 1: Checking inodes, blocks, and sizes
    Duplicate blocks found... invoking duplicate block passes.
    Pass 1B: Rescan for duplicate/bad blocks
    Duplicate/bad block(s) in inode 23166: 713543
    Duplicate/bad block(s) in inode 79927: 713543
    Pass 1C: Scan directories for inodes with dup blocks.
    Pass 1D: Reconciling duplicate blocks
    (There are 2 inodes containing duplicate/bad blocks.)

    File /X/old/X1/s3-sdk26.tar.gz (inode #79927, mod time Tue Aug 25 14:30:49 1998)
    has 1 duplicate block(s), shared with 1 file(s):
    /r6/39/xc/programs/Xserver/cfb32/libcfb32.a (inode #23166, mod time Thu Jul 8 09:32:30 1999)
    Clone duplicate/bad blocks<y>? yes

    File /r6/39/xc/programs/Xserver/cfb32/libcfb32.a (inode #23166, mod time Thu Jul 8 09:32:30 1999)
    has 1 duplicate block(s), shared with 1 file(s):
    /X/old/X1/s3-sdk26.tar.gz (inode #79927, mod time Tue Aug 25 14:30:49 1998)
    Duplicated blocks already reassigned or cloned.

    Pass 2: Checking directory structure
    Pass 3: Checking directory connectivity
    Pass 4: Checking reference counts
    Pass 5: Checking group summary information
    Block bitmap differences: -1925895
    Fix<y>? yes

    Free blocks count wrong for group #0 (37, counted=36).
    Fix<y>? yes

    Free blocks count wrong for group #87 (65535, counted=0).
    Fix<y>? yes

    Free blocks count wrong for group #235 (2175, counted=2176).
    Fix<y>? yes

    Free blocks count wrong (217245, counted=217246).
    Fix<y>? yes


    /dev/sda7: ***** FILE SYSTEM WAS MODIFIED *****
    /dev/sda7: 109108/690176 files (10.7% non-contiguous), 2539224/2756470 blocks
    -------------------------------------------------------------------------------
    root # e2fsck /dev/sda7 -vf
    e2fsck 1.14, 9-Jan-1999 for EXT2 FS 0.5b, 95/08/09
    Pass 1: Checking inodes, blocks, and sizes
    Pass 2: Checking directory structure
    Pass 3: Checking directory connectivity
    Pass 4: Checking reference counts
    Pass 5: Checking group summary information
    Block bitmap differences: +1925895
    Fix<y>? yes

    Free blocks count wrong for group #235 (2176, counted=2175).
    Fix<y>? yes

    Free blocks count wrong (217246, counted=217245).
    Fix<y>? yes


    /dev/sda7: ***** FILE SYSTEM WAS MODIFIED *****

    109108 inodes used (15%)
    11686 non-contiguous inodes (10.7%)
    # of inodes with ind/dind/tind blocks: 15382/1195/0
    2539225 blocks used (92%)
    0 bad blocks

    85234 regular files
    21221 directories
    0 character device files
    0 block device files
    0 fifos
    67 links
    2644 symbolic links (2429 fast symbolic links)
    0 sockets
    --------
    109166 files
    -------------------------------------------------------------------------------
    root # e2fsck /dev/sda7 -vf
    e2fsck 1.14, 9-Jan-1999 for EXT2 FS 0.5b, 95/08/09
    Pass 1: Checking inodes, blocks, and sizes
    Pass 2: Checking directory structure
    Pass 3: Checking directory connectivity
    Pass 4: Checking reference counts
    Pass 5: Checking group summary information
    Block bitmap differences: +729863
    Fix<y>? yes


    /dev/sda7: ***** FILE SYSTEM WAS MODIFIED *****

    109108 inodes used (15%)
    11686 non-contiguous inodes (10.7%)
    # of inodes with ind/dind/tind blocks: 15382/1195/0
    2539225 blocks used (92%)
    0 bad blocks

    85234 regular files
    21221 directories
    0 character device files
    0 block device files
    0 fifos
    67 links
    2644 symbolic links (2429 fast symbolic links)
    0 sockets
    --------
    109166 files
    -------------------------------------------------------------------------------
    root # e2fsck /dev/sda7 -vf
    e2fsck 1.14, 9-Jan-1999 for EXT2 FS 0.5b, 95/08/09
    Pass 1: Checking inodes, blocks, and sizes
    Pass 2: Checking directory structure
    Pass 3: Checking directory connectivity
    Pass 4: Checking reference counts
    Pass 5: Checking group summary information
    Block bitmap differences: -729863
    Fix<y>? yes

    Free blocks count wrong for group #89 (96, counted=97).
    Fix<y>? yes

    Free blocks count wrong (217245, counted=217246).
    Fix<y>? yes


    /dev/sda7: ***** FILE SYSTEM WAS MODIFIED *****

    109108 inodes used (15%)
    11686 non-contiguous inodes (10.7%)
    # of inodes with ind/dind/tind blocks: 15382/1195/0
    2539224 blocks used (92%)
    0 bad blocks

    85234 regular files
    21221 directories
    0 character device files
    0 block device files
    0 fifos
    67 links
    2644 symbolic links (2429 fast symbolic links)
    0 sockets
    --------
    109166 files
    -------------------------------------------------------------------------------
    root # e2fsck /dev/sda7 -vf
    e2fsck 1.14, 9-Jan-1999 for EXT2 FS 0.5b, 95/08/09
    Pass 1: Checking inodes, blocks, and sizes
    Pass 2: Checking directory structure
    Pass 3: Checking directory connectivity
    Pass 4: Checking reference counts
    Pass 5: Checking group summary information
    Block bitmap differences: +729863
    Fix<y>? yes

    Free blocks count wrong for group #89 (97, counted=96).
    Fix<y>? yes

    Free blocks count wrong (217246, counted=217245).
    Fix<y>? yes


    /dev/sda7: ***** FILE SYSTEM WAS MODIFIED *****

    109108 inodes used (15%)
    11686 non-contiguous inodes (10.7%)
    # of inodes with ind/dind/tind blocks: 15382/1195/0
    2539225 blocks used (92%)
    0 bad blocks

    85234 regular files
    21221 directories
    0 character device files
    0 block device files
    0 fifos
    67 links
    2644 symbolic links (2429 fast symbolic links)
    0 sockets
    --------
    109166 files
    -------------------------------------------------------------------------------
    root # e2fsck /dev/sda7 -vf
    e2fsck 1.14, 9-Jan-1999 for EXT2 FS 0.5b, 95/08/09
    Pass 1: Checking inodes, blocks, and sizes
    Pass 2: Checking directory structure
    Pass 3: Checking directory connectivity
    Pass 4: Checking reference counts
    Pass 5: Checking group summary information

    109108 inodes used (15%)
    11686 non-contiguous inodes (10.7%)
    # of inodes with ind/dind/tind blocks: 15382/1195/0
    2539225 blocks used (92%)
    0 bad blocks

    85234 regular files
    21221 directories
    0 character device files
    0 block device files
    0 fifos
    67 links
    2644 symbolic links (2429 fast symbolic links)
    0 sockets
    --------
    109166 files
    root # exit
    exit

    Script done on Thu Jul 8 12:13:11 1999
    ===============================================================================

    Harald
    --
    All SCSI disks will from now on ___ _____
    be required to send an email notice 0--,| /OOOOOOO\
    24 hours prior to complete hardware failure! <_/ / /OOOOOOOOOOO\
    \ \/OOOOOOOOOOOOOOO\
    \ OOOOOOOOOOOOOOOOO|//
    Harald Koenig, \/\/\/\/\/\/\/\/\/
    Inst.f.Theoret.Astrophysik // / \\ \
    koenig@tat.physik.uni-tuebingen.de ^^^^^ ^^^^^

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