On Mon, 27 Aug 2012 16:21:41 +0500, Muhammad Yousuf Khan wrote:
> On Mon, Aug 27, 2012 at 3:28 PM, Sthu Deus <sthu.d...@gmail.com> wrote:
>> Good time of the day, Muhammad.
>>
>>
>> You wrote:
>>
>>> i am using RAID 1 on 2x500GB harddrives. and one of my drive shows
>>> Current_Pending_Sector 154. how can i fix that.
You can't. Modern hard disks handle this by themselves in a process that
is transparent for the user (they "mark" the bad sectors so they are not
used again). You have to worry though if this value
(Current_Pending_Sector) starts increasing very quickly.
After all, as you are using "raid 1" you are covered by this (i.e., a
hard disk failure), right? ;-P
>> I also did not have such a problem. But I think, that You have not to
>> worry about this unless huge amount of sectors will become bad in short
>> period of time. - The HDD will relocate it itself, marking the primary
>> ones as bad and that's it.
Exactly.
> but my /var/log/syslog showing this
>
>
> Aug 27 12:11:37 lion kernel: [ 6.347932] ata1.00: status: { DRDY ERR }
> Aug 27 12:11:37 lion kernel: [ 6.348008] ata1.00: error: { UNC }
> Aug 27 12:11:37 lion kernel: [ 6.372478] ata1.00: configured for UDMA/133
> Aug 27 12:11:37 lion kernel: [ 6.372487] ata1: EH complete
> Aug 27 12:11:37 lion kernel: [ 9.059325] ata1.00: exception Emask 0x0 SAct
> 0x0 SErr 0x0 action 0x0
> Aug 27 12:11:37 lion kernel: [ 9.059413] ata1.00: BMDMA stat 0x4
> Aug 27 12:11:37 lion kernel: [ 9.059514] ata1.00: failed command: READ DMA
> Aug 27 12:11:37 lion kernel: [ 9.059620] ata1.00: cmd
> c8/00:08:08:78:1b/00:00:00:00:00/e2 tag 0 dma 4096 in
> Aug 27 12:11:37 lion kernel: [ 9.059621] res
> 51/40:00:0a:78:1b/00:00:00:00:00/e2 Emask 0x9 (media error)
>
>
> do i have to worry about this?
Sure you do. What's connected to ata1.00? (dmesg | grep -i ata1.00)
These errors are usually derived not from "bad sectors" but a hardware issue
(e.g., bad/loosey cabling). Just to be sure, you can run a full SMART test to
diagnose any problem from the disk and better if you use the hdd manufacturer's
test disk tools which are usually run from a small live-cd iso.
Greetings,
--
Camaleón
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