H. Peter Anvin wrote:
Eyal Lebedinsky wrote:
Neil Brown wrote:
[trim Q re how resync fixes data]
For raid1 we 'fix' and inconsistency by arbitrarily choosing one copy
and writing it over all other copies.
For raid5 we assume the data is correct and update the parity.
Can raid6 identify the ba
Neil Brown wrote:
On Monday March 5, [EMAIL PROTECTED] wrote:
Neil Brown wrote:
[trim Q re how resync fixes data]
For raid1 we 'fix' and inconsistency by arbitrarily choosing one copy
and writing it over all other copies.
For raid5 we assume the data is correct and update the parity.
Can raid6
Eyal Lebedinsky wrote:
Neil Brown wrote:
[trim Q re how resync fixes data]
For raid1 we 'fix' and inconsistency by arbitrarily choosing one copy
and writing it over all other copies.
For raid5 we assume the data is correct and update the parity.
Can raid6 identify the bad block (two parity blo
On Mar 7 2007 10:20, dean gaudet wrote:
>>> http://gentoo-wiki.com/HOWTO_Install_on_Software_RAID#Write-intent_bitmap
>>
>> That information has been extremely useful. Thanks a
>> lot. I fund a command to do the bitmap internal after
>> the array was made so I added that. Seems like some of
>> th
Mike Accetta wrote:
I gathered the impression somewhere, perhaps incorrectly, that the active
flag was a function of the boot block, not the BIOS. We use Grub in the
MBR and don't even have an active flag set in the partition table. The system
still boots.
The active flag is indeed an MBR i
From: Neil Brown <[EMAIL PROTECTED]>
md/bitmap tracks how many active write requests are pending on blocks
associated with each bit in the bitmap, so that it knows when it can
clear the bit (when count hits zero).
The counter has 14 bits of space, so if there are ever more than 16383,
we cannot c
From: NeilBrown <[EMAIL PROTECTED]>
There are two errors that can lead to recovery problems with raid10
when used in 'far' more (not the default).
Due to a '>' instead of '>=' the wrong block is located which would
result in garbage being written to some random location, quite
possible outside th
Dexter Filmore wrote:
http://gentoo-wiki.com/HOWTO_Gentoo_Install_on_Software_RAID#Data_Scrubbing
"Warning: Be aware that the combination of RAID5 and loop-devices will most
likely cause severe filesystem damage, especially when using ext3 and
ReiserFS. Some users suggest that XFS is not affec
Neil Brown wrote:
On Monday March 5, [EMAIL PROTECTED] wrote:
Is it possible to mark a disk as "to be replaced by an existing spare",
then migrate to the spare disk and kick the old disk _after_ migration
has been done? Or not even kick - but mark as new spare.
No, this is not possible
Michael Stumpf wrote:
Bill Davidsen wrote:
Michael Stumpf wrote:
This is the drive I think is most suspect. What isn't obvious,
because it isn't listed in the self test log, is between #1 and #2
there was an aborted, hung test. The #4 short test that was
aborted was also a hung test that I
Michael Stumpf wrote:
Bill Davidsen wrote:
Michael Stumpf wrote:
This is the drive I think is most suspect. What isn't obvious,
because it isn't listed in the self test log, is between #1 and #2
there was an aborted, hung test. The #4 short test that was
aborted was also a hung test that
> Neil,
>
> So in his case, is there anyway to determine which files are potentially
> corrupted?
I'd like to know that, too...
--
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Bill Davidsen wrote:
Peter Rabbitson wrote:
Hi,
I have been trying to figure out the best chunk size for raid10 before
By any chance did you remember to increase stripe_cache_size to match
the chunk size? If not, there you go.
At the end of /usr/src/linux/Documentation/md.txt it specifical
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