On Wed, Feb 06, 2008 at 04:45:39PM +0100, Keld Jørn Simonsen wrote:
On Wed, Feb 06, 2008 at 10:05:58AM +0100, Luca Berra wrote:
On Sat, Feb 02, 2008 at 08:41:31PM +0100, Keld Jørn Simonsen wrote:
Make each of the disks bootable by lilo:
lilo -b /dev/sda /etc/lilo.conf1
lilo -b /dev/sdb
the nut software
(and when you discover your battery is dead, change it)
L.
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in lilo.conf
Make each of the disks bootable by grub
install grub with the command
grub-install /dev/md0
L.
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for sector 63,
and one for sectors 64 to 70)
the next 7 io (71-78,79-86,97-94,95-102,103-110,111-118,119-126) will be
on the same track
the 8th will again require to be split, and so on.
this causes the storage to do 1 unnecessary io every 8. YMMV.
L.
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this:
md: md0: raid array is not clean -- starting background reconstruction
does your system shut down properly?
do you see the message about stopping md at the very end of the
reboot/halt process?
L.
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On Sun, Oct 28, 2007 at 01:47:55PM -0400, Doug Ledford wrote:
On Sun, 2007-10-28 at 15:13 +0100, Luca Berra wrote:
On Sat, Oct 27, 2007 at 08:26:00PM -0400, Doug Ledford wrote:
It was only because I wasn't using mdadm in the initrd and specifying
uuids that it found the right devices to start
On Mon, Oct 29, 2007 at 11:47:19AM -0400, Doug Ledford wrote:
On Mon, 2007-10-29 at 09:18 +0100, Luca Berra wrote:
On Sun, Oct 28, 2007 at 10:59:01PM -0700, Daniel L. Miller wrote:
Doug Ledford wrote:
Anyway, I happen to *like* the idea of using full disk devices, but the
reality is that the md
On Mon, Oct 29, 2007 at 11:30:53AM -0400, Doug Ledford wrote:
On Mon, 2007-10-29 at 09:41 +0100, Luca Berra wrote:
Remaking the initrd installs the new mdadm.conf file, which would have
then contained the whole disk devices and it's UUID. There in would
have been the problem.
yes, i read
activated, and you will probably run mdadm -Es to check what md are
available, the data should be still on the disk, else you would be hosed
anyway.
L.
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On Sat, Oct 27, 2007 at 04:47:30PM -0400, Doug Ledford wrote:
On Sat, 2007-10-27 at 09:50 +0200, Luca Berra wrote:
On Fri, Oct 26, 2007 at 03:26:33PM -0400, Doug Ledford wrote:
On Fri, 2007-10-26 at 11:15 +0200, Luca Berra wrote:
On Thu, Oct 25, 2007 at 02:40:06AM -0400, Doug Ledford wrote
On Sat, Oct 27, 2007 at 04:09:03PM -0400, Doug Ledford wrote:
On Sat, 2007-10-27 at 10:00 +0200, Luca Berra wrote:
On Fri, Oct 26, 2007 at 02:52:59PM -0400, Doug Ledford wrote:
On Fri, 2007-10-26 at 11:54 +0200, Luca Berra wrote:
On Sat, Oct 20, 2007 at 09:11:57AM -0400, Doug Ledford wrote
require --force, or check for superblocks in every possible
partition.
L.
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On Fri, Oct 26, 2007 at 03:26:33PM -0400, Doug Ledford wrote:
On Fri, 2007-10-26 at 11:15 +0200, Luca Berra wrote:
On Thu, Oct 25, 2007 at 02:40:06AM -0400, Doug Ledford wrote:
The partition table is the single, (mostly) universally recognized
arbiter of what possible data might be on the disk
On Fri, Oct 26, 2007 at 06:53:40PM +0200, Gabor Gombas wrote:
On Fri, Oct 26, 2007 at 11:15:13AM +0200, Luca Berra wrote:
on a pc maybe, but that is 20 years old design.
partition table design is limited because it is still based on C/H/S,
which do not exist anymore.
The MS-DOS format
On Fri, Oct 26, 2007 at 02:52:59PM -0400, Doug Ledford wrote:
On Fri, 2007-10-26 at 11:54 +0200, Luca Berra wrote:
On Sat, Oct 20, 2007 at 09:11:57AM -0400, Doug Ledford wrote:
just apply some rules, so if you find a partition table _AND_ an md
superblock at the end, read both and you can tell
even Doug's enterprise customers
L.
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by
install-mbr. Since install-mbr has its own prompt that is displayed
before LILO's prompt on boot, I can be pretty sure that LILO did not
write anything to the MBR...
the behaviour is documented in lilo man page, for the
raid-extra-boot option.
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the partition detection code from the blasted kernel and
move it to userspace, which is already in place, but it is not the
default.
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mucking with partition
tables.
L.
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More
/md0
L.
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\
--write-mostly -b /tmp/bitm$$ --write-behind missing
mdadm -a /dev/md1 /dev/sda1
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the
first write at which point they become normal read-write and any
required resync starts.
uh, i tought a read-only array was supposed to remain read-only, and
that write attempts would fail.
My bad for not testing my assumptions.
L.
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am assuming is dmraid? I did a quick check, and
no, it is device-mapper
# dmraid -r
No RAID disks
use dmsetup ls
L.
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on a degraded array, to ensure those
will be considered to be uptodate at next restart.
L.
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partitions | awk '
/^ARRAY[[:space:]]/ {
print $0, auto=yes
}
' /etc/mdadm.conf
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On Fri, Oct 13, 2006 at 10:15:35AM +1000, Neil Brown wrote:
I am pleased to announce the availability of
mdadm version 2.5.4
it looks like you did not include the patches i posted against 2.5.3
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On Wed, Sep 13, 2006 at 04:57:43PM +0200, Luca Berra wrote:
attached, please apply
without this mdassemble cannot activate stacked arrays, i wonder how i
managed to miss it :(
Another patch which obsoletes the previous one
this will make mdassemble, if run a second time, try to make
arrays
in userspace.
L.
P.S. the op can simply use partx to remove partition tables from the
components of the md array just after assembling.
L.
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attached, please apply
without this mdassemble cannot activate stacked arrays, i wonder how i
managed to miss it :(
L.
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--- mdadm-2.5.3
using --grow. The size
can be given as max which means to choose the largest size that
fits on all current drives.
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On Tue, Sep 05, 2006 at 05:47:57PM -0400, Steve Cousins wrote:
Luca Berra wrote:
On Tue, Sep 05, 2006 at 02:29:48PM -0400, Steve Cousins wrote:
Benjamin Schieder wrote:
On 05.09.2006 11:03:45, Steve Cousins wrote:
Would people be willing to list their setup? Including such things
? It still
works fine here.
i retested now with 5.36 and it seems the output did _not_ change, i
don't know what i saw this morning.
but then it errors on the line
IFS=read type status online ( smartctl -d ata -a ${disk} | grep
\#\ 1 | sed 's, \+, ,g' | cut -f 2,3,5 )
L.
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, and on
Sundays (Debian etch).
hihihi
monthday and weekday are or-ed in crontab
L.
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/sd? drives.
which command?
What do you (or others) recommend for SATA drives?
smartmontools and a recent kernel just work.
also you can schedule smart tests with smartmontools. so you don't need
to cron scripts.
L.
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than all the initrd-based solutions I have seen.
please, can we try not to resurrect again the kernel-level autodetection
flamewar on this list.
L.
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procedure, and then
update the UUIDs?
never tried that, let us know how you fare.
L.
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are not recognized after boot.
L.
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More
.
and please, please, stop top-posting and try to quote relevant parts of
messages when answering, or the thread will become unreadable.
L.
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,
L.
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: ext2fs_open2
Can I resolve this problem (resize2fs bug?)?
(may be using mdadm?)
since you bought a commercial product from redhat you might be better
open a support call to them.
if the resize2fs binary you are using comes from EL4, that is.
L.
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but that, for whatever reason,
it couldn't activate? (say, missing module, not enough members,
whatever)
this would make sense if it were an option, patches welcome :)
L.
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, but there are arguments
*for* root on LVM as well, and there's no reason to not support both
behaviors equally well and let people figure out what works best for
them.
No, this is just an argument against misusing root on lvm.
L.
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(and that is not directly related to
distance) is the bandwith you have between the two sites (i mean the
number of systems that might be using those 5 fibers)
Regards,
L.
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in the array itself?
the question i believe is to distinguish the case where an md device is
a component of another md device...
L.
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/dev/md100
to do something useful. Like -E, -X must be applied to a component
device. Try
mdadm -X /dev/sda1
/me needs some strong coffe. yes you are right, sorry
L.
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X
Name : 100
UUID : 60cd0dcb:fde52377:699453f7:da96b9d4
Events : 1
Number Major Minor RaidDevice State
0 810 active sync /dev/sda1
1 821 active sync /dev/sda2
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On Tue, Jul 04, 2006 at 12:46:03AM +0200, Luca Berra wrote:
On Mon, Jul 03, 2006 at 09:14:38AM +1000, Neil Brown wrote:
However
+
+ /* if we are using udev and auto is not set, mdadm will almost
+* certainly fail, so we force it here.
+*/
+ if (autof == 0
a check for both might suffice, else i will have to think
harder about it.
L.
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udev you must add --auto=yes to the mdadm commandline or
to the ARRAY line in mdadm.conf
following patch makes auto=yes the default when using udev
L.
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.
#endif /* __UCLIBC_HAS_FTW__ */
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...)
Yep... 2.6.15 or better... I need the magical patch =\.
Any other options?
scsi_id from udev, if you are lucky enough
L.
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/sdb1
then come on the list and complain when it stops working.
L.
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:
# fdisk /dev/md12
wait!
you cannot partition an md device.
if you need you have to use an mdp device,
but do you?
if you just want to create a single filesystem, as you do below, use the
md device directly.
Regards,
L.
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number and blacklist
based on that.
nothing prevents someone to have an udev rule that creates a device
node, instead of symlinking.
L.
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from fprintf, fwrite and
write, so now we check the rval and actually do something with it.
in the Grow.c case i only print a warning, since i don't think we can do
anithing in case we fail invalidating those superblocks (is should never
happen, but then...)
Regards,
L.
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On Sun, May 28, 2006 at 10:08:19AM -0700, dean gaudet wrote:
On Sun, 28 May 2006, Luca Berra wrote:
- mdadm-2.5-rand.patch
Posix dictates rand() versus bsd random() function, and dietlibc
deprecated random(), so switch to srand()/rand() and make everybody
happy.
fwiw... lots of rand()s tend
a !pattern, unless there is a pattern without a '!', in
which case the default is to reject non-accepted patterns.
Is that straight forward enough, or do I need an
order allow,deny
like apache has?
I think that documenting the feature would be enough
L.
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don't think we can do
anithing in case we fail invalidating those superblocks (is should never
happen, but then...)
Ok, thanks.
You can see these patches at
http://neil.brown.name/cgi-bin/gitweb.cgi?p=mdadm
Thanks.
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Regards,
L.
and please,
do not To: or Cc: me, i do actively read the list.
L.
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, issue a cp of the mdadm.static binary and my patch
might interfere with the everything target :-(
maybe you better add an install-static target.
L.
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On Sat, May 27, 2006 at 12:05:56PM +0200, Dirk Jagdmann wrote:
Hello developers and patch reviewers,
I just tried to update my (old) mdadm to 2.5 and had to apply this
small patch to build a static linked mdadm.
you should also fix the clean target.
L.
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an EXCLUDEDEVICE keyword with the opposite meaning.
L.
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On Fri, May 26, 2006 at 09:53:08AM +0200, Luca Berra wrote:
On Tue, May 23, 2006 at 08:39:26AM +1000, Neil Brown wrote:
Presumably you have a 'DEVICE' line in mdadm.conf too? What is it.
My first guess is that it isn't listing /dev/sdd? somehow.
Neil,
i am seeing a lot of people that fall
kernel auto-assemble devices
kernel auto-assembly should be disable and activation should be handled
by mdadm only!
L.
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read superblock
it is still inactive, no wonder you cannot access it.
try running the array, or really stop it before assembling.
L.
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On Tue, May 09, 2006 at 10:16:25AM -0600, Maurice Hilarius wrote:
Luca Berra wrote:
On Mon, May 08, 2006 at 11:30:52PM -0600, Maurice Hilarius wrote:
[EMAIL PROTECTED] ~]# mdadm /dev/md3 -a /dev/sdw1
But, I get this error message:
mdadm: hot add failed for /dev/sdw1: No such device
What? We
device node
not being available at boot?
Regards,
L.
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--auto if found
WDYT?
L.
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.
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On Sun, Apr 09, 2006 at 02:35:53PM +0200, Marc L. de Bruin wrote:
Hi,
(I just subscribed, sorry if this is a dupe. I did try to match the
subject from the archives, but couldn't find any...)
I ran into trouble after upgrading a Debian Sarge system from 2.6.11 to
2.6.15. To be more precise,
on a business trip and i don't have kernel-sources at
hand, but i seem to remember that the kernel was very strict on the
feature bitmap in the superblock.
L.
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sorted out the corruption?
no
Or would it have made things worse?
possibly yes
L.
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-endian...
And it seams like md superblock disk format is hostendian, so how
should I say mdadm to use a endianness ?
Read the man page several times?
Look for --update=byteorder
You need mdadm-2.0 or later.
besides IIRC version 1 super block is always little-endan.
L.
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/doc/AppuntiLinux/a296.html
L.
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More
On Sat, Feb 18, 2006 at 09:42:04AM +0100, Luca Berra wrote:
On Sat, Feb 18, 2006 at 02:12:26AM +0100, Antonello PAPA wrote:
i have two disk with raid 1. i can't find documents on how to set the
quotas.
i whould like to set the quota on /home, can some opne help? thanks and
sorry for bad
On Sat, Feb 18, 2006 at 02:30:47PM +0100, Antonello PAPA wrote:
At 09.49 18/02/06, you wrote:
On Sat, Feb 18, 2006 at 09:42:04AM +0100, Luca Berra wrote:
On Sat, Feb 18, 2006 at 02:12:26AM +0100, Antonello PAPA wrote:
i have two disk with raid 1. i can't find documents on how to set
accidentally shuffled disks before,
and 0xfd resulted in all the MD's coming to life again. I never
use /etc/mdadm.conf, since there doesn't seem to be much point...
i did not speak about in-kernel autodetection.
don't cc me on list replies unless it is really important
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correctly, you will have no problem :)
hint
echo DEVICE partitions /etc/mdadm.conf
mdadm -Esc partitions | grep ARRAY /etc/mdadm.conf
All md partitions are of type fd (Linux raid autodetect).
this is surprisingly not at all relevant
L.
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On Mon, Feb 13, 2006 at 06:52:47PM +0100, Chris Osicki wrote:
Luca
On Thu, 9 Feb 2006 21:48:48 +0100
Luca Berra [EMAIL PROTECTED] wrote:
On Thu, Feb 09, 2006 at 10:28:58AM -0800, Stern, Rick (Serviceguard Linux)
wrote:
There is more interest, just not vocal.
May want to look at LVM2
On Mon, Feb 13, 2006 at 10:53:43PM +0100, Luca Berra wrote:
diff -urN mdadm-2.3.1/Assemble.c mdadm-2.3.1.exclusive/Assemble.c
please note that the patch was written while i was composing the email
as a proof-of-concept, it should not be considered working (or even
compiling code)
L.
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Luca
at it ;-) .
Tia , JimL
what about all the past threads about in-kernel autodetection?
L.
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of mdadm
can you try rebuilding the current cooker rpm on 10.1 and try again.
i don't have a 10.1 laying around to test atm.
L.
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for a cluster/exclusive
flag, if not the name field could be used
what is missing is an interface between mdadm and cmcld so mdadm can ask
cmcld permission to activate an array with the cluster/exclusive flag
set.
L.
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Luca Berra -- [EMAIL PROTECTED]
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to reutilize a device that was previously a member of
an md array he/she should use mdadm --zero-superblock to remove the
superblock.
I see no point in having a system that tries to compensate for users not
following correct procedures. sorry.
L.
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Luca Berra -- [EMAIL PROTECTED
support fakeraid?
in case it does and it is enable that could conflict with md.
L.
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On Tue, Feb 07, 2006 at 07:46:59AM -0800, H. Peter Anvin wrote:
Luca Berra wrote:
I don't like using partition type as a qualifier, there is people who do
not wish to partition their drives, there are systems not supporting
msdos like partitions, heck even m$ is migrating away from those
On Tue, Feb 07, 2006 at 08:55:21AM -0800, H. Peter Anvin wrote:
Luca Berra wrote:
making it harder for the user is a good thing, but please not at the
expense of usability
What's the usability problem?
if we fail to support all partitioning schemes and we do not support
non partitioned
On Sat, Dec 31, 2005 at 11:44:32AM +1100, Daniel Pittman wrote:
DEVICE /dev/hd*
DEVICE /dev/sd*
i really find
DEVICE partitions
to be more useful than shell patterns.
L.
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X
your internal clock.
L.
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More majordomo
of free ones.
what you want is multipath-tools http://christophe.varoqui.free.fr/
RH4 should already include a multipath-tools rpm.
Regards,
Luca
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On Mon, Apr 18, 2005 at 08:05:22PM -0500, John McMonagle wrote:
Luca Berra wrote:
On Sun, Apr 17, 2005 at 05:04:13PM -0500, John McMonagle wrote:
Need to duplicate some computers that are using raid 1.
I was thinking of just adding adding an extra drive and then moving
it to the new system
the drives got mixed up I could see a
possibilities for disaster. Not exactly likely as the computers will be
in different cities.
Is there a way to change the uuid if a raid array?
Is it really worth worrying about?
you can recreate the array, this will not damage existing data.
L.
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Luca Berra
On Mon, Apr 04, 2005 at 01:59:09AM +0400, Michael Tokarev wrote:
I just come across an interesting situation, here's the
scenario.
C'mon, there's plenty of ways for you to shoot yourself in the feet. :)
L.
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Luca Berra -- [EMAIL PROTECTED]
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source (the coin is
biased, but it doesn't matter). At this point any possible parallel
reality is squashed out of existance.
L.
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On Tue, Mar 22, 2005 at 11:02:16AM +0100, Peter T. Breuer wrote:
Luca Berra [EMAIL PROTECTED] wrote:
If we want to do data-replication, access to the data-replicated device
should be controlled by the data replication process (*), md does not
guarantee this.
Well, if one writes to the md device
On Mon, Mar 21, 2005 at 02:58:56PM -0500, Paul Clements wrote:
Luca Berra wrote:
On Mon, Mar 21, 2005 at 11:07:06AM -0500, Paul Clements wrote:
All I'm saying is that in a split-brain scenario, typical cluster
frameworks will make two (or more) systems active at the same time. This
I sincerely
On Mon, Mar 21, 2005 at 11:07:06AM -0500, Paul Clements wrote:
All I'm saying is that in a split-brain scenario, typical cluster
frameworks will make two (or more) systems active at the same time. This
I sincerely hope not.
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autodetection and others which
should be left untouched?
autodetection only considers type fd partition, mdadm and raidstart
don't actually care.
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dirtied a block.
on a side note i am wondering what would the difference be on using this
approach within the md driver versus DRBD?
L.
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On Thu, Mar 10, 2005 at 11:03:44AM +0100, Jimmy Hedman wrote:
On Wed, 2005-03-09 at 17:43 +0100, Luca Berra wrote:
On Wed, Mar 09, 2005 at 11:28:48AM +0100, Jimmy Hedman wrote:
Is there any way i can make this work? Could it be doable with mdadm in
a initrd?
mdassembled was devise
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