FAILED SMART self-check

[m.roth at 5-cent.us]

Robert Canary wrote:
> Sorry for the confusion.
>
> Two drives sda and sdb are mirrored with RAID 1
> Getting errors on sda.
> I removed the sda, and moved sdb into the sda position
>
> However, I am still getting the same errors on the sda.
>
First, but based on what you've written, you really need to read up on
what RAID 1 *is*.

Second, when you say you removed /dev/sda, did you take it out of the box,
or just swap positions? If the latter, then a) the system still sees it as
sda: that's not something you've made any changed to - the system will
look for a LABEL or UUID, b) if you did take it out, and replace it with
another, new, physical drive, then there will be RAID messages saying it's
rebuilding, and c) if you just took it out, and there's only the one
drive, the former /dev/sdb, you will be seeing tons of messages that RAID
is degraded.

      mark

>
> ----- Original Message -----
>> On 07/25/12 07:18, Robert Canary wrote:
>> > I have RHEL machine here that becomes so unresponsive the mail
>> > server
>> > it is hosting practically stops. It is currently running a mirrored
>> > drive between sda and sdb. I have been getting the following errors
>> > in the log files, so I moved the mirrored drive to sda and disabled
>> > the (old) sda. Currently the system seems to be stable again,
>> > however, I am still getting these errors.
>>
>> I'm sorry, but I don't understand what you did. You mention two
>> drives,
>> and then "the (old) sda". ?
>>
>> Next, is this RAID 1?
>> >
>> > Any ideas where to go to fix it. Could it be bad sectors where
>> > transferred to the mirrored drive? Running smartmontools-5.3 I
>>
>> No. Bad sectors are *physical* errors on the platter.
>> <snip>
>> 	mark
>>
>> --
>>   When was the pleistocene?
>>   Around 1.8 million years ago, til about 10K years ago.
>>   What era are we in now?
>>   Trouble.
>>
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