On Sun, 2011-07-03 at 12:07 -0700, JD wrote: > On 07/03/2011 11:25 AM, Ross Boylan wrote: > > How can I tell which ata device is which hard drive? It's come up > > several times for me, most recently with > > ata2.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x6 frozen > > > > It appears from other info that sdb is the problem: > > <terminal> > > # smartctl -H /dev/sdb > > Sun Jul 3 10:26:29 PDT 2011 > > smartctl version 5.38 [i686-pc-linux-gnu] Copyright (C) 2002-8 Bruce > > Allen > > Home page is http://smartmontools.sourceforge.net/ > > > > Short INQUIRY response, skip product id > > A mandatory SMART command failed: exiting. To continue, add one or more > > '-T permissive' options. > > </terminal> > > but I'd like to know how to do this in general. > > > > I'd also welcome advice about the disk problems, but I was hoping to > > raise the odds of an answer by keeping it simple :) > > > > sdb has had hardware problems for awhile; it wouldn't be surprising if > > it's failed. > > > > Running lenny with linux 2.6.26-2-686. > > > > Thanks. > > Ross > > > > > > My basic advice in this situation is: > 1. unmount the failing drive if it is mounted, and mount it's > partitions read only. It's a bit tricky, since my mounts are mostly on LVM logical volumes. The main volume group I use includes the failing disk and some good disks. Unfortunately, LVM (specifically pvs or vgdisplay) won't give me info on the VG, even though I seem to have continuing access to many of its LVs. I *think* I've already moved most LVs to be backed by other disks. > 2. back up it's mounted partitions to a good drive using tar: > Assuming the mount points are > /sdb1 /sdb2 /sdb3 > cd / > for i in 1 2 3; do > tar cf- sdb$i | bzip2 -c -9 > /somewhere/backup/sdb$i > done The latest problem emerged while doing my monthly (full) backups. I think the backups are good but the partition with the iso image failed. > 3. If the drive is still under warranty, then run secure erase. > read up on hdparm (man hdparm) > If you go this route, I can send you a script > for proper use of hdparm to securely erase a drive. > After erasing, then get and RMA and send it away for > replacement. > It was when it started to fail. I was hoping to do some kind of LVM migration to get the info off, and so things have dragged on. > 4. If you purchase a new drive, you will then partition it > and tar back the backups to it. Thanks for the advice. > > -- To UNSUBSCRIBE, email to debian-user-requ...@lists.debian.org with > a subject of "unsubscribe". Trouble? Contact > listmas...@lists.debian.org Archive: > http://lists.debian.org/4e10bde7.4040...@gmail.com
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