Hi,
this night I moved an external disk with a ADVFS spanning 2 disks from
one machine to another (from 3.2d machine to 4.0b machine )
After rebooting, I could not mount the Filesystem which has come corrupt
on one disk. Maybe there was a shortcut in the SCSI-cable. (But another
ADVFS-Filesystem in the same external case had no problems)
The strange thing was: trying to mount or check the ADVFS leaded to an
immediate dump and the console prompt with this error message:
Sep 29 20:26:12 mailer2 vmunix: trap: invalid memory read access from
kernel mode
Sep 29 20:26:12 mailer2 vmunix:
Sep 29 20:26:12 mailer2 vmunix: faulting virtual address:
0x0000000000000b88
Sep 29 20:26:13 mailer2 vmunix: pc of faulting instruction:
0xfffffc0000344340
Sep 29 20:26:13 mailer2 vmunix: ra contents at time of fault:
0xfffffc00002e5f3c
Sep 29 20:26:13 mailer2 vmunix: sp contents at time of fault:
0xffffffff8698f4d0
Sep 29 20:26:13 mailer2 vmunix:
Sep 29 20:26:13 mailer2 vmunix: panic (cpu 0): kernel memory fault
Sep 29 20:26:13 mailer2 vmunix: syncing disks... done
Sep 29 20:26:13 mailer2 vmunix: device string for dump = SCSI 0 6 0 0 0
0 0.
Sep 29 20:26:13 mailer2 vmunix: DUMP.prom: dev SCSI 0 6 0 0 0 0 0, block
262144
Sep 29 20:26:13 mailer2 vmunix: device string for dump = SCSI 0 6 0 0 0
0 0.
Sep 29 20:26:13 mailer2 vmunix: DUMP.prom: dev SCSI 0 6 0 0 0 0 0, block
262144
As the ADVFS contained the home of more than 400 users I had to restore
the data from our nightly backup with a data loss of about 22 hours. But
for future problems I have some questions:
Is there any utility to repair a corrupt ADVFS?
Why does a corrupt filesystem crash the whole machine in this way? (as
the filesystem was in fstab, I had some difficulties to boot the
machine)
regards
harald
--
Harald Volz
- Netzwerk- und Systemadministration -
Max-Planck-Institut f. Biologische Kybernetik
Spemannstr. 38
D- 72076 Tuebingen
Tel: ++49 (0)7071 601-511
Fax: ++49 (0)7071 601-616 (o. -575)
email: sysadmin_at_tuebingen.mpg.de
harald.volz_at_tuebingen.mpg.de (private)
Received on Wed Sep 30 1998 - 11:09:41 NZST