Hello Neil ,
On Tue, 9 Oct 2007, Neil Brown wrote:
On Tuesday October 9, [EMAIL PROTECTED] wrote:
Problems at step 4.: 'man mdadm' doesn't tell if it's possible to
grow an array to a degraded array (non existant disc). Is it possible?
Why not experiment with loop devices on files and
hoping that
Mr. Dan Williams(et al?) patches will bring this up even more .
Thank you for posting the optimizations .
Twyl , JimL
On Mon, 1 Oct 2007, Mr. James W. Laferriere wrote:
Hello Justin , Three seperate single runs of bonnie(*) .
Please
Hello Justin , Three seperate single runs of bonnie(*) .
Please note , the linux-2.6.23-rc6 , Concerns your email of
this weekend about "Subject: Bonnie++ with 1024k stripe SW/RAID5
causes kernel to goto D-state" .
No lockups or hangs were noticed .
Hello Justin & all ,
--Justin Piszcz Wrote: --
Date: Wed, 26 Sep 2007 12:24:20 -0400 (EDT)
From: Justin Piszcz <[EMAIL PROTECTED]>
Subject: Re: mkfs options for a 16x hw raid5 and xfs (mostly large files)
I have a question, when I use multiple writer threads (2 or 3) I s
Hello Bill & all ,
Bill Davidsen <[EMAIL PROTECTED]> Sat, 22 Sep 2007 09:41:40 -0400 , wrote:
My only "advice" is to try and quantify the data volume and look at nbd vs.
iSCSI to provide the mirror if you go that way.
You mentioned nbd as a transport for disk to remote disk .
Hello Dan ,
On Thu, 13 Sep 2007, Dan Williams wrote:
On 9/13/07, Yuri Tikhonov <[EMAIL PROTECTED]> wrote:
Hi Dan,
On Friday 07 September 2007 20:02, you wrote:
You need to fetch from the 'md-for-linus' tree. But I have attached
them as well.
git fetch git://lost.foo-projects.org/~dw
Hello Dan ,
On Mon, 27 Aug 2007, Dan Williams wrote:
On 8/25/07, Mr. James W. Laferriere <[EMAIL PROTECTED]> wrote:
On Mon, 20 Aug 2007, Dan Williams wrote:
On 8/18/07, Mr. James W. Laferriere <[EMAIL PROTECTED]> wrote:
Hello All , Here we go again . Again atte
On Sun, 26 Aug 2007, Justin Piszcz wrote:
On Sun, 26 Aug 2007, Abe Skolnik wrote:
Dear Mr./Dr./Prof. Brown et al,
I recently had the unpleasant experience of creating an MD array for
the purpose of booting off it and then not being able to do so. Since
I had already made changes to the array's
Hello Dan ,
On Mon, 20 Aug 2007, Dan Williams wrote:
On 8/18/07, Mr. James W. Laferriere <[EMAIL PROTECTED]> wrote:
Hello All , Here we go again . Again attempting to do bonnie++ testing
on a small array .
Kernel 2.6.22.1
Patches involved ,
Hello All , Here we go again . Again attempting to do bonnie++ testing
on a small array .
Kernel 2.6.22.1
Patches involved ,
IOP1 , 2.6.22.1-iop1 for improved sequential write performance
(stripe-queue) , Dan Williams <[EMAIL PROTECTED]>
[SCSI] Addition to pci_ids.h for AT
Hello Dan ,
On Thu, 19 Jul 2007, Dan Williams wrote:
Per Bill Davidsen's request I have made available a 2.6.22.1 based
kernel with the current raid5 performance changes I have been working
on:
1/ Offload engine acceleration (recently merged for the 2.6.23
development cycle)
2/ Stripe-qu
Hello Bill ,
On Mon, 23 Jul 2007, Bill Davidsen wrote:
Mr. James W. Laferriere wrote:
Hello Andrew ,
On Tue, 17 Jul 2007, Andrew Burgess wrote:
The 'MCE's have been ongoing for sometime . I have replaced every
item
in the system except the chassis & scsi bac
Hello Andrew ,
On Tue, 17 Jul 2007, Andrew Burgess wrote:
The 'MCE's have been ongoing for sometime . I have replaced every item
in the system except the chassis & scsi backplane & power supply(750Watts) .
Everything . MB,cpu,memory,scsi controllers, ...
These M
Hello Alan (& Justin) ,
On Sun, 15 Jul 2007, Alan Cox wrote:
On Sat, 14 Jul 2007 17:08:27 -0700 (PDT)
"Mr. James W. Laferriere" <[EMAIL PROTECTED]> wrote:
Hello All , I was under the impression that a 'machine check' would be
caused by some ne
Hello All , I was under the impression that a 'machine check' would be
caused by some near to the CPU hardware failure , Not a bad disk ?
I was also under the impression that software raid s/b a little more
resilient than this .
But then maybe one or the other of the subsystems walked all ov
Hello Justin (& all) ,
On Thu, 28 Jun 2007, Justin Piszcz wrote:
On Thu, 28 Jun 2007, Peter Rabbitson wrote:
Justin Piszcz wrote:
On Thu, 28 Jun 2007, Peter Rabbitson wrote:
Interesting, I came up with the same results (1M chunk being superior)
with a completely different raid set
Hello Dan ,
On Tue, 26 Jun 2007, Dan Williams wrote:
Greetings,
Per Andrew's suggestion this is the md raid5 acceleration patch set
updated with more thorough changelogs to lower the barrier to entry for
reviewers. To get started with the code I would suggest the following
order:
[md-a
Hello Justin ,
On Sun, 22 Apr 2007, Justin Piszcz wrote:
On Sun, 22 Apr 2007, Pallai Roland wrote:
On Sunday 22 April 2007 16:48:11 Justin Piszcz wrote:
Have you also optimized your stripe cache for writes?
Not yet. Is it worth it?
--
d
Yes, it is-- well, if write speed is important
Hello Neil , I found the problem that caused the 'cannot allcate
memory' , DON'T use '--bitmap=' .
But that said , H , Shouldn't mdadm just stop & say ...
'md: bitmaps not supported for this level.'
Like it puts out into dmesg .
Also think this message i
Hello Neil , Someone else reported this before . But I'd thought it
was under a older kernel than 2.6.21-rc4 . Hth , JimL
root 2936 0.0 0.0 2948 1760 tts/0Ss 04:30 0:00 -bash
root 2965 0.3 0.0 0 0 ?S< 04:34 0:00 [md3_raid5]
root 2977 0.0
Hello Neil & Bill ,
On Sun, 18 Mar 2007, Bill Davidsen wrote:
Neil Brown wrote:
On Saturday March 17, [EMAIL PROTECTED] wrote:
Neil Brown wrote:
In-kernel auto-assembly using partition type 0xFD only works for
metadata=0.90. This is deliberate.
Don't use 0xFD partitions. Use mdadm
Hello All , I am having a dickens of a time with preparing this system
to replace my present one .
I created a raid6 array over 6 147GB scsi drives .
steps I followed were .
fdisk /dev/sd[c-h] ( one at a time of course )
created a partition starting at cyl 2 &
Hello Dean ,
On Mon, 15 Jan 2007, dean gaudet wrote:
...snip...
it should just be:
echo check >/sys/block/mdX/md/sync_action
if you don't have a /sys/block/mdX/md/sync_action file then your kernel is
too old... or you don't have /sys mounted... (or you didn't replace X with
the raid nu
Hello Neil & Luca ,
On Fri, 8 Sep 2006, Luca Berra wrote:
On Fri, Sep 08, 2006 at 02:26:31PM +0200, Lars Schimmer wrote:
-BEGIN PGP SIGNED MESSAGE-
Hash: SHA1
Michael Tokarev wrote:
Lars Schimmer wrote:
Hi!
I´ve got a software RAiD5 with 6 250GB HDs.
Now I changed one disk a
Hello All ,
On Thu, 3 Aug 2006, David Greaves wrote:
Neil Brown wrote:
write-bits-here-to-dirty-them-in-the-bitmap
is probably (no, definitely) too verbose.
Any better suggestions?
It's not actually a bitmap is it?
It takes a number or range and *operates* on a bitmap.
so:
dirty-c
Hello All , What change in Glibc mekes this necessary ? Is there a
method available to include the getpwnam & getgrnam structures so that
full static build will work . Tia , JimL
gcc -Wall -Werror -Wstrict-prototypes -ggdb -DSendmail=\""/usr/sbin/sendmail -t"\"
-DCONF
Hello Gabor ,
On Tue, 20 Jun 2006, Gabor Gombas wrote:
On Tue, Jun 20, 2006 at 03:08:59PM +0200, Niccolo Rigacci wrote:
Do you know if it is possible to switch the scheduler at runtime?
echo cfq > /sys/block//queue/scheduler
At least one can do a ls of the /sys/block area & t
Hello Neil , If I add any disk partition to end of the below command as
man mdadm requests . Ok , Now I get it , "partitions" or "none" are
required . But still ...
mdadm --examine --brief --scan --config=partitions
mdadm -Ebsc partitions
Hello Neil & All ,
On Mon, 20 Feb 2006, Janos Farkas wrote:
On 2006-02-20 at 09:30:22, Neil Brown wrote:
If you use an 'internal' bitmap (which is mirrored across all drives
much like the superblock) then you don't need to specify a file name.
However if you want the bitmap on a separat
Hello Neil & All ,
I'll bet I am going to get harassed over this , but ...
The present form (iirc) of the lilo append statement is
append="md=d0,/dev/sda,/dev/sdb"
I am wondering how difficult the below would be to code ?
This allows a (relatively
Hello Patrik ,
On Wed, 8 Feb 2006, Patrik Jonsson wrote:
Neil Brown wrote:
I always make them against the latest -mm kernel, so that would be a
good place to start. However things change quickly and I can't
promise it will apply against whatever is the 'latest' today.
If you would lik
Hello Neil ,
On Fri, 3 Feb 2006, Neil Brown wrote:
On Thursday February 2, [EMAIL PROTECTED] wrote:
On Thu, 2 Feb 2006, NeilBrown wrote:
Three patches for 2.6.lastest. All should go in 2.6.16.
One won't apply against -rc1-git5 as it fixes a bug in a patch
in -mm that hasn't quite got t
Hello Neil ,
On Thu, 2 Feb 2006, NeilBrown wrote:
Three patches for 2.6.lastest. All should go in 2.6.16.
One won't apply against -rc1-git5 as it fixes a bug in a patch
in -mm that hasn't quite got to -linus yes.
They are mostly little fixes. I've been doing some more testing,
particul
Hello David ,
On Wed, 1 Feb 2006, David Liontooth wrote:
We're wondering if it's possible to run the following --
* define 4 pairs of RAID 1 with an 8-port 3ware 9500S card
* the OS will see these are four normal drives
* use md to configure them into a RAID 6 array
Would this work?
Hello Neil ,
On Mon, 23 Jan 2006, Neil Brown wrote:
On Monday January 23, [EMAIL PROTECTED] wrote:
NeilBrown wrote:
In line with the principle of "release early", following are 5 patches
against md in 2.6.latest which implement reshaping of a raid5 array.
By this I mean adding 1 or mor
Hello Neil ,
On Tue, 17 Jan 2006, NeilBrown wrote:
Greetings.
In line with the principle of "release early", following are 5 patches
against md in 2.6.latest which implement reshaping of a raid5 array.
By this I mean adding 1 or more drives to the array and then re-laying
out all of the
Hello Neil ,
On Thu, 17 Nov 2005, Neil Brown wrote:
On Tuesday November 15, [EMAIL PROTECTED] wrote:
On Tue, 15 Nov 2005, NeilBrown wrote:
+
+---
+
+What: START_ARRAY ioctl for md
+When: July 2006
+Files: drivers/md/md.c
+Why: Not reliable by design - can fa
Hello Neil ,
On Tue, 15 Nov 2005, NeilBrown wrote:
Following are two patches for md in 2.6.14-mm2 that are suitable to go
into the 2.6.15-rc series.
The first adds a date to the deprecation of START_ARRAY ioctl.
The second fixes a recently introduced problem that causes md threads
to p
Hello Neil , The original '[PATCH md 000 of 2] Introduction' never hit
the list afaict . Could you please re-send or if you did & only I am
without it send privately . Tia , JimL
On Mon, 31 Oct 2005, Neil Brown wrote:
> On Sunday October 30, [EMAIL PROTECTED] wrote:
>
Hello Neil ,
On Sat, 10 Sep 2005, Neil Brown wrote:
On Friday September 9, [EMAIL PROTECTED] wrote:
Hello Neil , I patched all were successful . But after a
make clean ; make
I get ... Tia , JimL
..snip...
gcc -Wall -Werror -Wstrict-prototypes -DCONFFIL
Hello All , Off topic I know ...
I have a question not related to MD . Have you heard of
complaints about lilo overwriting partition info on disks
after the first 2 if those are in an raid1 ? Or any mentions
of lilo writing to all 16 disks causing problem
Hello Neil , I patched all were successful . But after a
make clean ; make
I get ... Tia , JimL
..snip...
gcc -Wall -Werror -Wstrict-prototypes -DCONFFILE=\"/etc/mdadm.conf\" -ggdb
-DSendmail=\""/usr/sbin/sendmail -t"\" -c -o Assemble.o Assemble.c
Assemble.c: I
Hello David , That did work . Thank you again . JimL
umount /directory
mdadm --readonly /dev/mdX
mdadm --readwrite /dev/mdX
mount /directory
On Fri, 9 Sep 2005, David M. Strang wrote:
Mr. James W. Laferriere wrote:
Hello David , Thank you for the
Hello David , Thank you for the idea . But ...
[EMAIL PROTECTED]:~ # mdadm --readonly /dev/md_d0
mdadm: failed to set readonly for /dev/md_d0: Device or resource busy
I think I'll try Neil's upgrade to 2.6.13 & his patch to
mdadm . I'll report back if that cures my pro
Hello Neil ,
On Thu, 8 Sep 2005, Mr. James W. Laferriere wrote:
On Fri, 9 Sep 2005, Neil Brown wrote:
On Thursday September 8, [EMAIL PROTECTED] wrote:
When I try to do the remove I get .
[EMAIL PROTECTED]:/ # mdadm /dev/md_d0 --remove /dev/sdao
mdadm: hot remove failed for
Hello Neil ,
On Fri, 9 Sep 2005, Neil Brown wrote:
On Thursday September 8, [EMAIL PROTECTED] wrote:
When I try to do the remove I get .
[EMAIL PROTECTED]:/ # mdadm /dev/md_d0 --remove /dev/sdao
mdadm: hot remove failed for /dev/sdao: Device or resource busy
I should al
Hello Neil , Inline .
On Fri, 9 Sep 2005, Neil Brown wrote:
On Thursday September 8, [EMAIL PROTECTED] wrote:
Hello All , Is there a documented procedure to follow during
creation or after that will get a raid6 array to self
rebuild ?
I suspect a kernel upgrad
Hello All , Is there a documented procedure to follow during
creation or after that will get a raid6 array to self
rebuild ?
Why I am asking .
I was getting the errors below at a heavy rate , so ...
Sep 7 20:11:49 localhost kernel: scsi2 (2:0): rejecting
Hello Ulf & All ,
On Fri, 6 Apr 2001, Dambacher wrote:
> Hi all
> Why using command line? I presume because this leaves the administrator a
> last way to influence the system. The old technique of "just search and use,
> don't ask" may not be good if you crash the system by searching a n
Hello Ulf & All,
On Fri, 6 Apr 2001, Dambacher wrote:
> Hi Alexander
> I had the same problem with autodetect. It seems that they turned of the
> partitition detection mode in favor of a kernel command line. Look for
> ./linux/Documentation/md.txt
> Its something like md=,...
> for
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