[OpenAFS-devel] openafs-1.2.6 namei-salvager destroys volumes

[Michael Niksch]

I compiled openafs-1.2.6 on AIX 4.3.3 with the
--enable-namei-fileserver flag. While the fileserver itself seems to be
working, running salvager destroys the data. The underlying /vicepa
filesystem is a standard JFS created by AIX 4.3.3.

Any ideas what might be going wrong would be highly appreciated.

Below is a demonstration of the problem, which occurs even on a newly
created, empty volume. Interestingly enough, no visible files in
/vicepa are deleted, nor does the number of used inodes change during
the run of salvager. Nevertheless, the volume is no longer accessible.
With actual data in the volume, I have even seen the fileserver refuse
to attach the volume at all after salvaging.

# find /vicepa
/vicepa
/vicepa/lost+found
/vicepa/Lock
/vicepa/Lock/vicepa
/vicepa/AFSIDat
/vicepa/AFSIDat/README
# df /vicepa  
Filesystem    512-blocks      Free %Used    Iused %Iused Mounted on
/dev/lv02         262144    253808    4%       21     1% /vicepa
# vos create vorab /vicepa test   
Volume 536870986 created on partition /vicepa of vorab
# find /vicepa                 
/vicepa
/vicepa/lost+found
/vicepa/Lock
/vicepa/Lock/vicepa
/vicepa/AFSIDat
/vicepa/AFSIDat/README
/vicepa/AFSIDat/8=
/vicepa/AFSIDat/8=/8=++U
/vicepa/AFSIDat/8=/8=++U/special
/vicepa/AFSIDat/8=/8=++U/special/zzzz5
/vicepa/AFSIDat/8=/8=++U/special/zzzz9
/vicepa/AFSIDat/8=/8=++U/special/zzzzD
/vicepa/AFSIDat/8=/8=++U/special/zzzzP
/vicepa/AFSIDat/8=/8=++U/+
/vicepa/AFSIDat/8=/8=++U/+/+
/vicepa/AFSIDat/8=/8=++U/+/+/=
/vicepa/V0536870986.vl
# df /vicepa  
Filesystem    512-blocks      Free %Used    Iused %Iused Mounted on
/dev/lv02         262144    253720    4%       32     1% /vicepa
# fs mkm /afs/.t/test test
# ls -ld /afs/.t/test
drwxrwxrwx   2 root     system      2048 Aug 27 17:36 /afs/.t/test
# bos salvage vorab /vicepa
Note: Operation is performed on cell test.zurich.ibm.com
bos: shutting down fs.
Starting salvage.
bos: salvage completed
bos: restarting fs.
# bos getlog vorab SalvageLog
Fetching log file 'SalvageLog'...
Note: Operation is performed on cell test.zurich.ibm.com
@(#) OpenAFS 1.2.6 built  2002-08-21 
08/27/2002 17:37:31 STARTING AFS SALVAGER 2.4 (/usr/afs/bin/salvager -f /vicepa)
08/27/2002 17:37:31 SALVAGING FILE SYSTEM PARTITION /vicepa (device=vicepa)
08/27/2002 17:37:31 ***Forced salvage of all volumes on this partition***
08/27/2002 17:37:32 SALVAGING VOLUME 536870986.
08/27/2002 17:37:32 test (536870986) not updated (created 08/27/2002 17:36)
08/27/2002 17:37:32 Vnode 1: vnode.unique, 1, does not match inode unique, 0; fixed, but status will be wrong
08/27/2002 17:37:32 Vnode 1: link count incorrect (was 2, now 0)
08/27/2002 17:37:32 Salvaged test (536870986): 1 files, 2 blocks
08/27/2002 17:37:32 SALVAGING OF PARTITION /vicepa COMPLETED
# bos getlog vorab FileLog
Fetching log file 'FileLog'...
Note: Operation is performed on cell test.zurich.ibm.com
Tue Aug 27 17:37:36 2002 File server starting
Tue Aug 27 17:37:37 2002 afs_krb_get_lrealm failed, using test.zurich.ibm.com.
Tue Aug 27 17:37:37 2002 Partition /vicepa: attached 1 volumes; 0 volumes not attached
Tue Aug 27 17:37:37 2002 Getting FileServer name...
Tue Aug 27 17:37:37 2002 FileServer host name is 'vorab.zurich.ibm.com'
Tue Aug 27 17:37:37 2002 Getting FileServer address...
Tue Aug 27 17:37:37 2002 FileServer vorab.zurich.ibm.com has address 9.4.3.252 (0x90403fc or 0x90403fc in host byte order)
Tue Aug 27 17:37:37 2002 File Server started Tue Aug 27 17:37:37 2002
# find /vicepa       
/vicepa
/vicepa/lost+found
/vicepa/Lock
/vicepa/Lock/vicepa
/vicepa/AFSIDat
/vicepa/AFSIDat/README
/vicepa/AFSIDat/8=
/vicepa/AFSIDat/8=/8=++U
/vicepa/AFSIDat/8=/8=++U/special
/vicepa/AFSIDat/8=/8=++U/special/zzzz5
/vicepa/AFSIDat/8=/8=++U/special/zzzz9
/vicepa/AFSIDat/8=/8=++U/special/zzzzD
/vicepa/AFSIDat/8=/8=++U/special/zzzzP
/vicepa/AFSIDat/8=/8=++U/+
/vicepa/AFSIDat/8=/8=++U/+/+
/vicepa/AFSIDat/8=/8=++U/+/+/=
/vicepa/V0536870986.vl
# ls -ld /afs/.t/test     
ls: 0653-341 The file /afs/.t/test does not exist.
# df /vicepa         
Filesystem    512-blocks      Free %Used    Iused %Iused Mounted on
/dev/lv02         262144    253720    4%       32     1% /vicepa

-- 
Michael Niksch                     /Zurich/IBM @ IBMCH
IBM Zurich Research Laboratory     nik@zurich.ibm.com
Saeumerstrasse 4                   http://www.zurich.ibm.com/~nik/
CH-8803 Rueschlikon / Switzerland  P: +41-1-724-8913 F: +41-1-724-8080