Re: reiser4 problems

[Hans Reiser <reiser@namesys.com>]

Unless Vitaly is still around, you will probably have to wait until
tomorrow for a response.  Thanks for your patience.

Hans

Sergey Ivanov wrote:

>Hi,
>I am sorry to report problems I had this night at my e-mail server.
>Grepped reiser4 messages from /var/log/messages are at
>http://parkheights.dyndns.org/r4log.bz2
>I have 2 processor system (athlon) with raid5 software array with 5x62.1
>GB, giving me 248.4GB for use. I have created lvm2 volumes for imap
>folders there, and also have /usr, /var, /home and other resides on the
>same raid5, everything formatted reiser4.
>Yesterday the server stops working, but answer pings. I've rebooted it
>with magic SysRQ key combinations after forced unmounting and syncing
>all partitions. But in the night the problems reappear on some of
>virtual volumes. In the morning I did remount -o ro and fsck.reiser4,
>all but one volume was O.K, but one required rebuild-fs. Excuse me, I
>have not saved the first fsck.reiser4 output. After rebuilding fs and
>then rebooting the system, I've got immediately problems, the filesystem
>was not accessible, all attempts to get ls of it finished with i/o error
>messagees. (I have errors in /etc/fstab, the reiser4 volumes has lines
>ending with 1 1, not 1 2 as it should be. I'm not sure it attributed to
>the these  problems).
>The second fsck.reiser4 once more founded some problems, it's the log:
>---
>[root@parkheights ~]# fsck.reiser4 -y --build-fs /dev/evms/imap-seriv
>*******************************************************************
>This is an EXPERIMENTAL version of fsck.reiser4. Read README first.
>*******************************************************************
>
>Fscking the /dev/evms/imap-seriv block device.
>Will check the consistency of the Reiser4 SuperBlock.
>Will build the Reiser4 FileSystem.
>***** fsck.reiser4 started at Tue Mar 21 08:34:40 2006
>Reiser4 fs was detected on /dev/evms/imap-seriv.
>Master super block (16):
>magic:          ReIsEr4
>blksize:        4096
>format:         0x0 (format40)
>uuid:           c2bc9aae-fc5c-43b4-b527-9ff6fcde5b55
>label:          <none>
>
>Format super block (17):
>plugin:         format40
>description:    Disk-format for reiser4.
>magic:          ReIsEr40FoRmAt
>flushes:        0
>mkfs id:        0xbd3e802
>blocks:         1834992
>free blocks:    1059587
>root block:     740782
>tail policy:    0x2 (smart)
>next oid:       0x77c5f
>file count:     395956
>tree height:    4
>key policy:     LARGE
>
>CHECKING STORAGE TREE
>FSCK: Node (740803): The left delimiting key [29:1(SD):0:2a:0] in the
>parent node (740782), pos (0/4294967295) does not match the first key
>[0:0(NAME):0:0:
>0] in the node. Fixed.
>FSCK: The tree height 4 found in the format is wrong. Fixed to 5.
>        Read nodes 440830
>        Nodes left in the tree 440830
>                Leaves of them 435415, Twigs of them 5323
>        Time interval: Tue Mar 21 08:34:41 2006 - Tue Mar 21 08:44:54 2006
>CHECKING EXTENT REGIONS.
>        Read twigs 5323
>        Time interval: Tue Mar 21 08:44:54 2006 - Tue Mar 21 08:46:14 2006
>LOOKING FOR UNCONNECTED NODES
>        Read nodes 0
>        Good nodes 0
>                Leaves of them 0, Twigs of them 0
>        Time interval: Tue Mar 21 08:46:14 2006 - Tue Mar 21 08:46:14 2006
>CHECKING EXTENT REGIONS.
>        Read twigs 0
>        Time interval: Tue Mar 21 08:46:14 2006 - Tue Mar 21 08:46:14 2006
>INSERTING UNCONNECTED NODES
>1. Twigs: done
>2. Twigs by item: done
>3. Leaves: done
>4. Leaves by item: done
>        Twigs: read 0, inserted 0, by item 0, empty 0
>        Leaves: read 0, inserted 0, by item 0
>        Time interval: Tue Mar 21 08:46:14 2006 - Tue Mar 21 08:46:14 2006
>CHECKING SEMANTIC TREE
>FSCK: Node (762207), item (5), [6f6e9:6e657700000000:6f6eb] (stat40):
>wrong size (20), Fixed to (21).
>FSCK: Node (762207), item (5), [6f6e9:6e657700000000:6f6eb] (stat40):
>wrong bytes (2473), Fixed to (2605).
>FSCK: Node (773635), item (5), [6f62a:6e657700000000:6f62c] (stat40):
>wrong size (6), Fixed to (7).
>FSCK: Node (773635), item (5), [6f62a:6e657700000000:6f62c] (stat40):
>wrong bytes (628), Fixed to (760).
>FSCK: Node (773635), item (6), [6f62a:746d7000000000:6f62b] (stat40):
>wrong size (4), Fixed to (3).
>FSCK: Node (773635), item (6), [6f62a:746d7000000000:6f62b] (stat40):
>wrong bytes (312), Fixed to (206).
>        Found 395956 objects.
>        Time interval: Tue Mar 21 08:46:14 2006 - Tue Mar 21 09:28:41 2006
>CLEANUPING STORAGE TREE
>...
>--- (once more, excuse me, I have copied it from xterm while it was
>'cleanuping storage tree', so it's not the full log).
>
>After second fsck, I have unmounted and mounted it read only to save
>data on ext3 partition and to wait answers and suggestions before using
>reiser4 once more.
>  
>