Hi
The day before I grew a 4 times 300GB disk RAID5. I replaced the 300GB
drives by 750GB ones. As far as I can see the proposed way to do that
is to kick a drive from RAID and let a spare drive take over - for
sensible data this is scary - at least for me, because I lose
redundancy for the
I'm trying to assemble an array (raid 5) of 8 older, but not yet old age
ATA 120 gig disks, but there is intermittent flakiness in one or more of
the drives. Symptoms:
* Won't boot sometimes. Even after moving to 2 power supplies and
monitoring the amp spikes, sometimes I get clicking from
On Mon, 5 Mar 2007, Michael Stumpf wrote:
I'm trying to assemble an array (raid 5) of 8 older, but not yet old age ATA
120 gig disks, but there is intermittent flakiness in one or more of the
drives. Symptoms:
* Won't boot sometimes. Even after moving to 2 power supplies and monitoring
Hi,
I just tried to setup a one-device raid onto an USB flash drive.
Creating, setting up ext3 and filling with data was no problem.
But when I tried to work with it afterwards the metadevice was
unresponsive. I tried both linear and raid0 levels, but that
made no difference.
For my
Besides being run for a long time, I don't see anything strange with this
drive.
Justin.
On Mon, 5 Mar 2007, 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
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 yet.
You can get nearly
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 affected by this, but this
Gabor Gombas wrote:
On Fri, Mar 02, 2007 at 09:04:40AM -0500, Mike Accetta wrote:
Thoughts or other suggestions anyone?
This is a case where a very small /boot partition is still a very good
idea... 50-100MB is a good choice (some initramfs generators require
quite a bit of space under /boot
On Monday March 5, [EMAIL PROTECTED] 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
Bill Davidsen wrote:
Gabor Gombas wrote:
On Fri, Mar 02, 2007 at 09:04:40AM -0500, Mike Accetta wrote:
Thoughts or other suggestions anyone?
This is a case where a very small /boot partition is still a very good
idea... 50-100MB is a good choice (some initramfs generators require
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 identify
H. Peter Anvin wrote:
Mike Accetta wrote:
I've been considering trying something like having the re-sync algorithm
on a whole disk array defer the copy for sector 0 to the very end of the
re-sync operation. Assuming the BIOS makes at least a minimal
consistency
check on sector 0 before
Mike Accetta wrote:
I wonder if having the MBR typically outside of the array and the relative
newness of partitioned arrays are related? When I was considering how to
architect the RAID1 layout it seemed like a partitioned array on the
entire disk worked most naturally.
It's one way to do
On Tuesday March 6, [EMAIL PROTECTED] wrote:
So I practiced what I learned today and scrubbed the array.
Getting this:
xerxes:/sys/block/md0/md# cat mismatch_cnt
147248
4x 250GB Samsung sATA, smartctl says all fine.
Need to worry?
If you have a swap file on this array, then that
Hi Neil,
I've been following this thread with interest and I have a few questions.
Neil Brown wrote:
On Monday March 5, [EMAIL PROTECTED] wrote:
Neil Brown wrote:
When a disk fails we know what to rewrite, but when we discover a mismatch
we do not have this knowledge. It may corrupt the
On Tue, 6 Mar 2007, 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.
Hi all,
I tried memcpy,__copy_to_user,and __copy_to_user_inatomic,etc.
The destination is BIO's bio_vec-page (the page should be in userspace),
the source is a page of my modules;
I get the addresses of the both pages from kmap() or kmap_atomic() then pass
to memcpy or __copy_to_user or
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