On Fri, 5 Dec 2008, Redeeman wrote:
On Fri, 2008-12-05 at 16:02 -0500, Justin Piszcz wrote:
On Fri, 5 Dec 2008, Redeeman wrote:
Hello.
I was looking at the PDFs linked to from the wiki, and found this:
http://kernel.org/pub/linux/kernel/people/hpa/raid6.pdf
More specifically, section 4, starting on page 8.
Am I understanding this correctly, in that with raid6, linux is capable
of detecting if the content on 1 disk is corrupted, and reconstruct it
from the remaining disks?
I ran md/raid6 for awhile, do you mean remap the bad sector on the fly?
Linux/md raid does not do this afaik.
No, i mean, if one disk does silent corruption
What would the error look like? Both md/Linux & in the 3ware manual
recommend you run a 'check' across the raid at least once a week
(3ware/raid-verify) and md/Linux in Debian runs a check once a month I
believe to eliminate these issues.
If you are asking whether a read error of a latent sector from the one
disk will result it reading the data from the second disk that is a good
question.
Justin.
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