[Date Prev][Date Next] [Thread Prev][Thread Next] [Date Index] [Thread Index]

Re: disk problems: which ATA?

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:
# 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
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.
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.


My basic advice in this situation is:
1. unmount the failing drive if it is mounted, and mount it's partitions read only.
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
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

4. If you purchase a new drive, you will then partition it
    and tar back the backups to it.

Reply to: