Re: A bug with multiple devices?

[Chris Samuel <chris@csamuel.org>]

[-- Attachment #1: Type: text/plain, Size: 905 bytes --]

On Wed, 31 Dec 2008 12:43:13 pm Shen Feng wrote:

> The problem still exists with -d option.

As Chris Mason wrote in response to my query on this it's a known issue that's 
a consequence of different chunks potentially having different RAID levels.

The RAID level itself does appear to work - I tested it by copying a kernel 
image onto it, unmounted it, used debug-tree to work out the offset for it on 
one device of the RAID and blew a section away with dd.  I remounted it and 
verified that the MD5 checksums still agreed with the original and there were 
kernel messages complaining about checksum mismatches showing that the damage 
had been detected and worked around.

cheers,
Chris
-- 
 Chris Samuel  :  http://www.csamuel.org/  :  Melbourne, VIC

This email may come with a PGP signature as a file. Do not panic.
For more info see: http://en.wikipedia.org/wiki/OpenPGP


[-- Attachment #2: This is a digitally signed message part. --]
[-- Type: application/pgp-signature, Size: 481 bytes --]