UBC errors and missing disklabel

From: Bob Parkinson <rwplists_at_omni.library.nottingham.ac.uk>
Date: Tue, 27 Aug 1996 12:48:48 +0100 (GMT+0100)

Good day all,

I've been having problems with our machine locking up (osf 3.2 alphastation 200 4/166).

Looking through various logs I've noticed a growth in the following two messages
(in kern.log).

Aug 25 19:25:32 omni vmunix: UBC write error(5) on device (8, 2054) at block 957440 size 8192
Aug 25 19:25:33 omni vmunix: Defering I/O (errno -1) for block(0x153040, 0x153040) on device 8,2054
Aug 25 19:25:33 omni vmunix: Defering I/O (errno -1) for block(0x153040, 0x153040) on device 8,2054
Aug 25 19:25:33 omni vmunix: Defering I/O (errno -1) for block(0xcc690, 0xcc690) on device 8,2054
Aug 25 19:25:33 omni vmunix: Defering I/O (errno -1) for block(0xcc690, 0xcc690) on device 8,2054
Aug 25 19:25:33 omni vmunix: UBC write error(5) on device (8, 2054) at block 1478368 size 8192
Aug 25 19:25:34 omni vmunix: UBC write error(5) on device (8, 2054) at block 1545808 size 8192
Aug 25 19:25:35 omni vmunix: UBC write error(5) on device (8, 2054) at block 635760 size 8192
Aug 25 19:25:36 omni vmunix: UBC write error(5) on device (8, 2054) at block 241856 size 8192
Aug 25 19:25:37 omni vmunix: Defering I/O (errno 5) for block(0xcc690, 0xcc690) on device 8,2054

I identified the device (8,2054) as one of my partitions (/dev/rz2g). I moved everything
from this partition, and was going to use /usr/field/diskx, but it complained with saying;

part_overlap: DIOCGDINFO failed
Aborting this test due to failure in obtaining
partition layout (disk label) from /dev/rrz2g.

I then used disklabel, but it (the disklabel) has been lost for this particular drive.

Are the events related, the lost disklabel/UBC errors/machine locking up?

My simplistic hope is that restoring the missing label will solve my locking up problem.
Is this likely to be a 'correct' soloution.

Thanks,

Bob


Bob.Parkinson_at_nottingham.ac.uk
------------------------------
University of Nottingham Library Network Group.
Research Assistant: Networked Information
Technical Officer: OMNI project
--------------------------------
There must be some kind of way out of here,
Received on Tue Aug 27 1996 - 14:16:36 NZST

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