A co-worker (Wayne Pitts) suggested I sending the following question to this list. I'd appreciate any suggestions anyone can offer. Thanks in advance,
Greg Johnson
Rational Software Corporation
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I get the following when booting up my DEC 3000:
[...]
ADVFS: using 1152 buffers containing 9.00 megabytes of memory
cam_logger: CAM_ERROR packet
cam_logger: bus 0 target 2 lun 0
cdisk_check_sense
Medium Error bad block number: 7888
Hard Error Detected
DEC RZ28B
Active CCB at time of error
CCB request completed with an error
Error, exception, or abnormal condition
MEDIUM ERROR - Nonrecoverable medium error
[repeat of above...]
advfs I/O error: setId 0x2f4cc333.000dc140.fffffffe.000 tag 0xfffffff7.0000u page 484
vd1 blk 7888 blkCnt 16
read error = 5
This looks pretty bad to me. This is the bootable root partition; it is a DEC advfs file system (root_domain#root on /dev/rz2a). I've looked through the DEC documentation on advfs, and it says that errors should be corrected automatically at start-up. It gives no hints on how to attack errors that it cannot automatically fix, such as this one.
I can boot it up to single-user mode, because it is able to mount the file system read-only, and access the Unix system image (vmunix). I can then mount the other partitions, but I cannot go to multi-user mode because it tries to re-mount the root partition, which causes the above failure.
I have a new 4.0 GB disk (Quantum) that I'm configuring, and it is bare. I had already decided to make it a bootable disk.
I'm pursuing configuring this disk and either copying the root partition to it, or installing DEC Unix v3.2 on it from scratch. Since I can't add a new domain for this new disk (because the root filesystem is read-only), I guess that I have to install from scratch on the new disk?
But if there's a way to recover the above root filesystem without reformatting the partition, I'd love to hear how.
Thanks,
- Greg Johnson
Received on Thu Jan 16 1997 - 15:54:11 NZDT