defrag causes panic- why?

From: <Rod_BYRNS_at_paribas.com>
Date: Fri, 28 Aug 1998 12:29:42 +0100

Hi. I'm having a problem on an AS1200, 4.0D with patches installed. Last
Saturday I had to change a disk in a striped
LSM volume, rebuild the ADVFS domains and restore the data from backup.
Since then, the defragcron script has
been causing a panic as follows:

10:36 # defragcron -p

     defragment -T 83 data

     defragment -T 83 data1
     defragment: Defragmenting domain 'data'
     defragment: Defragmenting domain 'data1'
10:44 defragment: Defragmented domain 'data1'
11:32 panic (cpu 0): release_dirty_pg: log half full
     syncing disks... done


my filesets look like this:
# df -k
Filesystem 1024-blocks Used Available Capacity
Mounted on
/dev/vol/rootdg/rootvol 128751 78832 37043 69% /
/proc 0 0 0 100%
/proc
data#nsr 52429056 152873 25460328 1% /nsr
data#kits 52429056 2100795 25460328 8%
/kits
data#transfer 52429056 24508121 25460328 50%
/transfer
/dev/vol/rootdg/vol-rz8g 1007567 833276 73534 92% /usr
data#local 52429056 155573 25460328 1%
/usr/local
data1#sybase 1855048 212081 1636840 12%
/usr/users/sybase

the disks in the LSM volume in question:
 rz9 at scsi1 target 1 lun 0 (LID=2) _(DEC RZ1DB-CS (C) DEC 0307)
_(Wide16)
 rz10 at scsi1 target 2 lun 0 (LID=3) _(DEC RZ1DB-CS (C) DEC 0307)
_(Wide16)
 rz11 at scsi1 target 3 lun 0 (LID=4) _(DEC RZ1DB-CS (C) DEC 0307)
_(Wide16)
 rz12 at scsi1 target 4 lun 0 (LID=5) _(DEC RZ1DB-CS (C) DEC 0307) )
_(Wide16)
 rz13 at scsi1 target 5 lun 0 (LID=6) _(DEC RZ1DF-CB (C) DEC 0371)
_(Wide16)
 rz14 at scsi1 target 6 lun 0 (LID=7) _(DEC RZ1DB-CS (C) DEC 0307)
_(Wide16)

rz13 is the disk I had to change and as you can see the replacement is a
different type. I don't know
whether this would cause a problem or not.

Well, hopefully someone may be able to tell me what's going on here!

Cheers,
Rod






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Received on Fri Aug 28 1998 - 13:21:24 NZST

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