Very Computer

This morning I was greeted by a bunch of disk read errors and kernel failure
messages on my screen.  They look like:

Apr 18 06:14:06 jingoro /kernel: sd0(ncr0:0:0): MEDIUM ERROR info:3cd0d1
    asc:16,0 Data synchronization mark error
Apr 18 06:17:32 jingoro /kernel: sd0(ncr0:0:0): MEDIUM ERROR info:3cd423
    asc:11,0 Unrecovered read error
Apr 18 06:26:53 jingoro /kernel: sd0(ncr0:0:0): MEDIUM ERROR info:3cd775
    asc:11,0 Unrecovered read error
 ...
Apr 18 06:29:49 jingoro /kernel: sd0(ncr0:0:0): MEDIUM ERROR info:3cd775
    asc:11,0 Unrecovered read error
Apr 18 06:30:44 jingoro /kernel: sd0(ncr0:0:0): MEDIUM ERROR info:3cdac7
    asc:11,0 Unrecovered read error
 ...
Apr 18 06:30:48 jingoro /kernel: sd0(ncr0:0:0): MEDIUM ERROR info:3cdac7
    asc:11,0 Unrecovered read error

With several more of each deleted for brevity.  The disk should be in perfect
operating order...?  Is it?  Or could something else be causing these errors?

I'm running FreeBSD 2.1 stable vintaged roughly a month ago.  In the past
week I _did_ replace my memory.  Could it possibly be the culprit?

In the meantime I haven't rebooted my machine so I can see if this happens
more often...

Chris

If it's new, better have it replaced.  Well, `synch mark error' --
perhaps it's running too hot?

You can try running ``scsi -f /dev/rsd0.ctl -e -m 1'', and turn on
automagic sector reallocation (top couple of lines in the editor).

--
cheers, J"org

Never trust an operating system you don't have sources for. ;-)

: >Apr 18 06:14:06 jingoro /kernel: sd0(ncr0:0:0): MEDIUM ERROR info:3cd0d1
: >    asc:16,0 Data synchronization mark error
: >Apr 18 06:17:32 jingoro /kernel: sd0(ncr0:0:0): MEDIUM ERROR info:3cd423
: >    asc:11,0 Unrecovered read error

: >With several more of each deleted for brevity.  The disk should be in perfect
: >operating order...?  Is it?  Or could something else be causing these errors?

: It's your disk.

: If it's new, better have it replaced.  Well, `synch mark error' --
: perhaps it's running too hot?

: You can try running ``scsi -f /dev/rsd0.ctl -e -m 1'', and turn on
: automagic sector reallocation (top couple of lines in the editor).

Unless someone threw a blanket over my case that drive is the coolest drive
I've ever used.  It's well ventilated, even cool to the touch.

Sector reallocation was and _is_ on!  Someone suggested that it might be
my memory that I recently replaced.  I'm going to change that back and
see if it helps.

Thanks,
Chris

--
cheers, J"org

Never trust an operating system you don't have sources for. ;-)