On Wed, Sep 13, 2006 at 12:17:55PM -0700, Dan Williams wrote:
...
Out of curiosity; how does accelerated compare to non-accelerated?
One quick example:
4-disk SATA array rebuild on iop321 without acceleration - 'top'
reports md0_resync and md0_raid5 dueling for the CPU each at ~50%
Tejun == Tejun Heo [EMAIL PROTECTED] writes:
Tejun Would it be better for md to listen to
Tejun hotplug events and auto-remove dead devices or is it
Tejun something which belongs to userland?
From my perspective (User+Admin), I'd _very much_ like to have
(physically) removed disks
Hello all,
On 9/13/06, Tejun Heo [EMAIL PROTECTED] wrote:
Ric Wheeler wrote:
Leon Woestenberg wrote:
In short, I use ext3 over /dev/md0 over 4 SATA drives /dev/sd[a-d]
each driven by libata ahci. I unplug then replug the drive that is
rebuilding in RAID-5.
When I unplug a drive, /dev/sda
mdadm --assemble /dev/md0 /dev/hda1 /dev/hdb1 # i think, man mdadm
Not what I meant: there already exists an array on a file server that was
created from the server os, I want to boot that server from knoppix instead
and access the array.
exactly what --assemble does. looks at disks, finds
Am Donnerstag, 14. September 2006 17:58 schrieb Tuomas Leikola:
mdadm --assemble /dev/md0 /dev/hda1 /dev/hdb1 # i think, man mdadm
Not what I meant: there already exists an array on a file server that was
created from the server os, I want to boot that server from knoppix
instead and
Ruth Ivimey-Cook wrote:
Steve,
The recent Messed up creating new array... thread has
someone who started by using the whole drives but she now
wants to use partitions because the array is not starting
automatically on boot (I think that was the symptom). I'm
guessing this is because
On 9/14/06, Dexter Filmore [EMAIL PROTECTED] wrote:
How about you read the rest of the thread, wisecracker?
sorry. mailreader-excuse/
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On Thursday September 14, [EMAIL PROTECTED] wrote:
Neil (or others), what is the recommended way to have the array start up
if you use whole drives instead of partitions? Do you put mdadm -A etc.
in rc.local?
I would use
mdadm -As
is rc.local (or /etc/init.d/mdadm or whatever)
Leon Avery wrote:
I've been using RAID for a long time, but have been using the old
raidtools. Having just discovered mdadm, I want to switch, but I'm
having trouble. I'm trying to figure out how to use mdadm to replace
a failed disk. Here is my /proc/mdstat:
Personalities : [linear]
Ralf Herrmann wrote:
Dear Mr. Davidson and Mr. Brown,
It certainly is a legitimate question, and marginal power would have
been at the end of my list as well... However, if all else fails, try
formatting the new drives to use only the size of the old drive
capacity (RAID on small
Lem wrote:
On Mon, 2006-09-04 at 13:55 -0400, Bill Davidsen wrote:
May I belatedly say that this is sort-of a kernel issue, since
/proc/partitions reflects invalid data? Perhaps a boot option like
nopart=sda,sdb or similar would be in order?
Is this an argument to be passed to the
On Thu, Sep 14, 2006 at 02:24:45PM +0200, Leon Woestenberg wrote:
Hello all,
On 9/13/06, Tejun Heo [EMAIL PROTECTED] wrote:
Ric Wheeler wrote:
Leon Woestenberg wrote:
In short, I use ext3 over /dev/md0 over 4 SATA drives /dev/sd[a-d]
each driven by libata ahci. I unplug then replug the
blow are some codes in md_do_sync function of md.c in
linux-2.6.17.11-rc5/drivers/md
4774: int next = (last_mark+1) % SYNC_MARKS;
I have no idea why SYNC_MARKS is set 10. if set SYNC_MARKS to 8 or
16(the power of 2), we can replace the % operation to operation
and this trick will
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