scrubbing in linux volume manager
Hello, I did not find any support for scrubbing in lvm, I would like to know id this is right and the reason if so I see 2 reasons => performance overhead => demerits of scrubbing when silent data corruption and disk failure simultaneously ocurrs. thanks, sanoj
On Thu, Jan 27, 2011 at 12:02 AM, sanoj <k.u.sanoj@gmail.com> wrote:
Hello, I did not find any support for scrubbing in lvm, I would like to know id this is right and the reason if so I see 2 reasons => performance overhead => demerits of scrubbing when silent data corruption and disk failure simultaneously ocurrs.
thanks, sanoj
What's "scrubbing"?
On Thu, Jan 27, 2011 at 3:32 PM, Greg Freemyer <greg.freemyer@gmail.com> wrote:
On Thu, Jan 27, 2011 at 12:02 AM, sanoj <k.u.sanoj@gmail.com> wrote:
Hello, I did not find any support for scrubbing in lvm, I would like to know id this is right and the reason if so I see 2 reasons => performance overhead => demerits of scrubbing when silent data corruption and disk failure simultaneously ocurrs.
thanks, sanoj
What's "scrubbing"?
I think he meant regular "disk scrubbing" to zero out the contents. -- Thanks - Manish
On Fri, Jan 28, 2011 at 6:25 AM, Manish Katiyar <mkatiyar@gmail.com> wrote:
On Thu, Jan 27, 2011 at 3:32 PM, Greg Freemyer <greg.freemyer@gmail.com> wrote:
On Thu, Jan 27, 2011 at 12:02 AM, sanoj <k.u.sanoj@gmail.com> wrote:
Hello, I did not find any support for scrubbing in lvm, I would like to know id this is right and the reason if so I see 2 reasons => performance overhead => demerits of scrubbing when silent data corruption and disk failure simultaneously ocurrs.
thanks, sanoj
What's "scrubbing"?
I think he meant regular "disk scrubbing" to zero out the contents.
Disk Scrubbing typically refers to the verification of disk drives against media errors.
-- Thanks - Manish
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On Fri, Jan 28, 2011 at 10:23 AM, SandeepKsinha <sandeepksinha@gmail.com>wrote:
What's "scrubbing"?
I think he meant regular "disk scrubbing" to zero out the contents.
Disk Scrubbing typically refers to the verification of disk drives against media errors.
hello, I referred to scrubbing which is used in RAID 4 / 5, which is used for recovery of corrupted sectors in a stripe. thanks, sanoj
On Fri, Jan 28, 2011 at 3:48 AM, sanoj <k.u.sanoj@gmail.com> wrote:
On Fri, Jan 28, 2011 at 10:23 AM, SandeepKsinha <sandeepksinha@gmail.com> wrote:
What's "scrubbing"?
I think he meant regular "disk scrubbing" to zero out the contents.
Disk Scrubbing typically refers to the verification of disk drives against media errors.
hello,
I referred to scrubbing which is used in RAID 4 / 5, which is used for recovery of corrupted sectors in a stripe.
thanks, sanoj
It's news to me that LVM (device mapper) supports raid4/5 at all. So I'm not surprised it doesn't support raid error scrubbing. MD does support raid4 and raid5. It also supports scrubbing. (I don't think they call it scrubbing. man mdadm should help you.) LVM (device mapper) does offer raid1 support and in theory could support scrubbing for that, but my guess is that raid support in device mapper is just very immature and it has no real reason for not being supported. Greg
participants (4)
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Greg Freemyer -
Manish Katiyar -
SandeepKsinha -
sanoj