Doug Poland wrote:
On Mon, November 26, 2007 15:03, Doug Poland wrote:
On Mon, November 26, 2007 14:26, Doug Poland wrote:
Hello,

This morning my 7.0-BETA3 i386 system (Compaq nx7400) reset shortly
after starting X11.  I didn't think much of it and went to get a cup
of coffee while the background fsck took care of the file systems.

Unforunately, something's still broke.  At first, when I tried to
access the /var or /tmp filesystems, I received panics similar to:

mode = 0100644, inum = 31127, fs = /tmp
panic: ffs_valloc: dup alloc
cpuid = 0
Uptime: 9s
Physical memory: 3435 MB
Dumping 101 MB:Aborting dump due to I/O error.
status == 0x4, scsi status == 0x0

** DUMP FAILED (ERROR 5) **
Automatic reboot in 15 seconds - press a key on the console to abort


After doing some googling, it looked like my filesystems weren't
really clean after several manual runs of fsck.  So I disabled
softupdates on /var and /tmp and ran fsck on those file systems
again.  After mounting them rw, I attempted to hit the filesystem
again, this time getting a panic:

panic: ffs_clusteralloc: map mismatch
cpuid = 1
Uptime: 6m40s
Physical memory: 3435 MB
Dumping 149 MB:Aborting dump due to I/O error.
status == 0x4, scsi status == 0x0

** DUMP FAILED (ERROR 5) **
Automatic reboot in 15 seconds - press a key on the console to abort

Is there a way to identify and fix these errors?  I'm thinking a
newfs of both /var and /tmp is in order.  I don't really care
about /tmp, and I've backed up /var using dump(8).  My concern is
if I restore /var on top of a newfs'd filesystem, I'll restore my
broken files and have the same problem again.

Just a follow-up...  Everytime I run a  manual fsck on the problem
filesystems, it returns:

<snip>
BLK(S) MISSING IN BITMAPS
SALVAGE?
<snip>
***** FILE SYSTEM WAS MODIFIED *****


So it would appear that fsck is unable to repair damage, is that
correct?

Well, having stumped all the experts, I decided to reinstall from
7.0-BETA3 CD-ROM.  After a few minutes of writing to the disk after
newfs, I got more panic: ffs_clusteralloc: map mismatch errors.  Since
the device I'm writing to is a 3-day old Maxtor OneTouch III external
HD, I've decided it must be a hardware failure and am returing the
drive.



Yes, for whatever reason FreeBSD is unable to reliably perform I/O to the drive (hence the errors dumping).

Kris
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