VXFS , lvol corrupt every couple days

[zs_hzh]

hi, experts

i'm facing a critical problem , my backup logical volume was corrupted and need fsck every couple days , and that caused database to hang after archives are full ..

my OS 11i, my vxfs Version 4
fileset 999 is deleted files ?

any idea of why it happend and where i should be looking at ?

thanks!
br/ricky

here is log of fsck
root% fsck -y /dev/vgbackup/lvol1
fsck: /etc/default/fs is used for determining the file system type
log replay in progress
file system is not clean, full fsck required
pass0 - checking structural files
pass1 - checking inode sanity and blocks
pass2 - checking directory linkage
pass3 - checking reference counts
pass4 - checking resource maps
fileset 999 au 13 imap incorrect - fix (ynq)y
fileset 999 au 16 imap incorrect - fix (ynq)y
fileset 999 au 33 imap incorrect - fix (ynq)y
fileset 999 au 36 imap incorrect - fix (ynq)y
fileset 999 au 37 imap incorrect - fix (ynq)y
fileset 999 au 39 imap incorrect - fix (ynq)y
fileset 999 au 40 imap incorrect - fix (ynq)y
au 0 emap incorrect - fix? (ynq)y
au 0 summary incorrect - fix? (ynq)y
au 1 emap incorrect - fix? (ynq)y
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au 2331 emap incorrect - fix? (ynq)y
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fileset 999 iau 13 summary incorrect - fix? (ynq)y
fileset 999 iau 16 summary incorrect - fix? (ynq)y
fileset 999 iau 33 summary incorrect - fix? (ynq)y
fileset 999 iau 36 summary incorrect - fix? (ynq)y
fileset 999 iau 37 summary incorrect - fix? (ynq)y
fileset 999 iau 39 summary incorrect - fix? (ynq)y
fileset 999 iau 40 summary incorrect - fix? (ynq)y
fileset 999 iau 41 summary incorrect - fix? (ynq)y
free block count incorrect 1182339877 expected 108109359 fix? (ynq)y
free extent vector incorrect fix? (ynq)y
OK to clear log? (ynq)y
set state to CLEAN? (ynq)y

[Dennis Handly]

>my OS 11i

There are 5 versions of 11i, which?

[zs_hzh]

actually , it's 11.11

Server model : RP4440

4 CPU/16G Memory

with Oracle 9.2.0.8 running on top

the corrupted volume is for backing up of DB and file system

[Victor Fridyev]

Hi

Try to check the partition by
dd if=/dev/vgbackup/rlvol1 of=/dev/null bs=32768k

I'm afraid, you'll get I/O errors, so the problem is in the HW

[zs_hzh]

hi , vitor

do i have to check the disk by dd before i execute fsck or after ?

for HW problem ,which part ? Server or storage system ? which is a HP EVA4K

[zs_hzh]

at least now ,it's working

(101) root% dd if=/dev/vgbackup/rlvol1 of=/dev/null bs=32768k
12+0 records in
12+0 records out

[chinadns]

if hw is ok,and only this one filesystem bad.
i think you should backup the data ,recreate the filesystem and restore the data.

[Bill Hassell]

The dd command can be run at anytime. It does not know anything about filesystems -- it just reads the disk tracks. If it finishes with the words: I/O error, then the disk is defective. If you do not have disk mirroring, you'll have to restore your data from backup tapes after replacing the disk.

If you do not see any dd errors, then some script or process is likely destroying the directory.

[zs_hzh]

the vgbackup is for backing up of rootvg and DB and other VG ,

it has a script that do this and delete old backups ,

i have recreated the entire VG before , but it's easily reoccured

destroied the directory ? you mean lost+found ?

fileset 999 is for files that are deleted ?

can you tell me more of how directory destroying affect the system ,

thanks