[CentOS] HDD badblocks

Sat Jan 23 20:41:34 UTC 2016
Chris Murphy <lists at colorremedies.com>

On Thu, Jan 21, 2016 at 9:27 AM, Lamar Owen <lowen at pari.edu> wrote:
> On 01/20/2016 01:43 PM, Chris Murphy wrote:
>> On Wed, Jan 20, 2016, 7:17 AM Lamar Owen <lowen at pari.edu> wrote:
>>> The standard Unix way of refreshing the disk contents is with badblocks'
>>> non-destructive read-write test (badblocks -n or as the -cc option to
>>> e2fsck, for ext2/3/4 filesystems).
>> This isn't applicable to RAID, which is what this thread is about. For
>> RAID, use scrub, that's what is for.
> The badblocks read/write verification would need to be done on the RAID
> member devices, not the aggregate md device, for member device level remap.
> It might need to be done with the md offline, not sure.  Scrub?  There is a
> scrub command (and package) in CentOS, but it's meant for secure data
> erasure, and is not a non-destructive thing.  Ah, you're talking about what
> md will do if 'check' or 'repair' is written to the appropriate location in
> the sysfs for the md in question.  (This info is in the md(4) man page).


Chris Murphy