7.0 problem with fsck

[Michael Richards]

I have a development machine with a USB drive on it used for backups. I
recently upgraded to 7.0 but now it's been crashing.

The machine is a Dell Poweredge 6450 quad CPU

The drive is:
da0 at umass-sim0 bus 0 target 0 lun 0
da0: <Maxtor OneTouch III 035d> Fixed Direct Access SCSI-4 device
da0: 1.000MB/s transfers
da0: 286188MB (586114704 512 byte sectors: 255H 63S/T 36483C)

and I've successfully used this drive for about 6 months.

Here is what /var/log/messages had to say:
Mar  2 02:03:54 mule kernel: umass0: BBB bulk-in clear stall failed, TIMEOUT
Mar  2 02:03:54 mule kernel: umass0: BBB bulk-out clear stall failed,
IOERROR
Mar  2 02:04:59 mule kernel: umass0: BBB reset failed, IOERROR
Mar  2 02:06:04 mule kernel: umass0: BBB bulk-in clear stall failed, TIMEOUT
Mar  2 02:06:04 mule kernel: umass0: BBB bulk-out clear stall failed,
IOERROR
Mar  2 02:07:09 mule kernel: umass0: BBB reset failed, IOERROR
Mar  2 02:08:14 mule kernel: umass0: BBB bulk-in clear stall failed, TIMEOUT
Mar  2 02:08:14 mule kernel: umass0: BBB bulk-out clear stall failed,
IOERROR
Mar  2 02:08:14 mule kernel: g_vfs_done():da0s1[READ(offset=286340743168,
length=16384)]error = 5
Mar  2 02:09:19 mule kernel: umass0: BBB reset failed, IOERROR

So I tried to run fsck on it:
fsck /dev/da0s1d
** /dev/da0s1d
** Last Mounted on /backup
** Phase 1 - Check Blocks and Sizes
fsck_4.2bsd: cannot alloc 4294967292 bytes for inoinfo

I also tried fsck -d but it gives no more detail. The volume appears to
mount correctly and I can see my files but during the backup it has crashed
every night since I upgraded to 7.0.

In frustration I tried to newfs that drive.
mule#  newfs /dev/da0s1d
/dev/da0s1d: 286181.3MB (586099332 sectors) block size 16384, fragment size
2048
        using 1558 cylinder groups of 183.77MB, 11761 blks, 23552 inodes.
super-block backups (for fsck -b #) at:
 160, 376512, 752864, 1129216, 1505568, 1881920, 2258272, 2634624, 3010976,
3387328, 3763680, 4140032, 4516384, 4892736, 5269088,
--- SNIP ---

Same problem:
mule# fsck /dev/da0s1d
** /dev/da0s1d
** Last Mounted on
** Phase 1 - Check Blocks and Sizes
fsck_4.2bsd: cannot alloc 4294967292 bytes for inoinfo

Any ideas?

-Michael