I understand that lilo and grub only can boot partitions that look like
a normal single-drive partition. And then I understand that a plain
raid10 has a layout which is equivalent to raid1. Can such a raid10
partition be used with grub or lilo for booting?
And would there be any advantages in this,
Hi linux-raid.
on DEBIAN :
[EMAIL PROTECTED]:/# mdadm -D /dev/md1
/dev/md1:
Version : 00.91.03
Creation Time : Tue Nov 13 18:42:36 2007
Raid Level : raid5
Array Size : 1465159488 (1397.29 GiB 1500.32 GB)
Used Dev Size : 488386496 (465.76 GiB 500.11 GB)
Raid Devices : 5
On Monday February 4, [EMAIL PROTECTED] wrote:
>
> raid01:/etc# cat /proc/mdstat
> Personalities : [linear] [raid0] [raid1] [raid10] [raid6] [raid5] [raid4]
> [multipath] [faulty]
> md1 : active(auto-read-only) raid5 sdc[0] sdb[5](S) sdf[3] sde[2] sdd[1]
^^^
> 1465
Hi, Neil.
4 февраля 2008 г., 03:44:21:
> On Thursday January 31, [EMAIL PROTECTED] wrote:
>> Hello linux-raid.
>>
>> i have DEBIAN.
>>
>> raid01:/# mdadm -V
>> mdadm - v2.6.4 - 19th October 2007
>>
>> raid01:/# mdadm -D /dev/md1
>> /dev/md1:
>> Version : 00.91.03
>> Creation Time : T
Здравствуйте, Neil.
Вы писали 4 февраля 2008 г., 03:44:21:
> On Thursday January 31, [EMAIL PROTECTED] wrote:
>> Hello linux-raid.
>>
>> i have DEBIAN.
>>
>> raid01:/# mdadm -V
>> mdadm - v2.6.4 - 19th October 2007
>>
>> raid01:/# mdadm -D /dev/md1
>> /dev/md1:
>> Version : 00.91.03
>>
On Thursday January 31, [EMAIL PROTECTED] wrote:
> Hello linux-raid.
>
> i have DEBIAN.
>
> raid01:/# mdadm -V
> mdadm - v2.6.4 - 19th October 2007
>
> raid01:/# mdadm -D /dev/md1
> /dev/md1:
> Version : 00.91.03
> Creation Time : Tue Nov 13 18:42:36 2007
> Raid Level : raid5
On Saturday February 2, [EMAIL PROTECTED] wrote:
> Çäðàâñòâóéòå, linux-raid.
>
> Help please, How i can to fight THIS :
>
> [EMAIL PROTECTED]:~# mdadm -I /dev/sdb
> mdadm: /dev/sdb has different metadata to chosen array /dev/md1 0.91 0.90.
>
Apparently "mdadm -I" doesn't work with arrays that a
On Feb 3, 2008 5:29 PM, Janek Kozicki <[EMAIL PROTECTED]> wrote:
> Neil Brown said: (by the date of Mon, 4 Feb 2008 10:11:27 +1100)
>
> wow, thanks for quick reply :)
>
> > > 3. Another thing - would raid10,far=2 work when three drives are used?
> > >Would it increase the read performance?
On Feb 3, 2008 5:29 PM, Janek Kozicki <[EMAIL PROTECTED]> wrote:
> Neil Brown said: (by the date of Mon, 4 Feb 2008 10:11:27 +1100)
>
> wow, thanks for quick reply :)
>
> > > 3. Another thing - would raid10,far=2 work when three drives are used?
> > >Would it increase the read performance?
Neil Brown said: (by the date of Mon, 4 Feb 2008 10:11:27 +1100)
wow, thanks for quick reply :)
> > 3. Another thing - would raid10,far=2 work when three drives are used?
> >Would it increase the read performance?
>
> Yes.
is far=2 the most I could do to squeeze every possible MB/sec
pe
On Sunday February 3, [EMAIL PROTECTED] wrote:
> Hi,
>
> Maybe I'll buy three HDDs to put a raid10 on them. And get the total
> capacity of 1.5 of a disc. 'man 4 md' indicates that this is possible
> and should work.
>
> I'm wondering - how a single disc failure is handled in such configuration?
Hi,
Maybe I'll buy three HDDs to put a raid10 on them. And get the total
capacity of 1.5 of a disc. 'man 4 md' indicates that this is possible
and should work.
I'm wondering - how a single disc failure is handled in such configuration?
1. does the array continue to work in a degraded state?
2.
On Sun Feb 03, 2008 at 02:46:54PM -0600, Moshe Yudkowsky wrote:
> Robin Hill wrote:
>
>> This is wrong - the disk you boot from will always be hd0 (no matter
>> what the map file says - that's only used after the system's booted).
>> You need to remap the hd0 device for each disk:
>> grub --no-flo
Moshe Yudkowsky wrote:
> Michael Tokarev wrote:
>
>> Speaking of repairs. As I already mentioned, I always use small
>> (256M..1G) raid1 array for my root partition, including /boot,
>> /bin, /etc, /sbin, /lib and so on (/usr, /home, /var are on
>> their own filesystems). And I had the following
Michael Tokarev wrote:
Speaking of repairs. As I already mentioned, I always use small
(256M..1G) raid1 array for my root partition, including /boot,
/bin, /etc, /sbin, /lib and so on (/usr, /home, /var are on
their own filesystems). And I had the following scenarios
happened already:
But th
Robin Hill wrote:
This is wrong - the disk you boot from will always be hd0 (no matter
what the map file says - that's only used after the system's booted).
You need to remap the hd0 device for each disk:
grub --no-floppy <
For my enlightenment: if the file system is mounted, then hd2,1 is a
Moshe Yudkowsky wrote:
> I've been reading the draft and checking it against my experience.
> Because of local power fluctuations, I've just accidentally checked my
> system: My system does *not* survive a power hit. This has happened
> twice already today.
>
> I've got /boot and a few other piec
On Sun Feb 03, 2008 at 01:15:10PM -0600, Moshe Yudkowsky wrote:
> I've been reading the draft and checking it against my experience. Because
> of local power fluctuations, I've just accidentally checked my system: My
> system does *not* survive a power hit. This has happened twice already
> to
I've been reading the draft and checking it against my experience.
Because of local power fluctuations, I've just accidentally checked my
system: My system does *not* survive a power hit. This has happened
twice already today.
I've got /boot and a few other pieces in a 4-disk RAID 1 (three ru
Bill Davidsen wrote:
Have you actually tested this by removing the first hd and booting?
Depending on the BIOS I believe that the fallback drive will be called
hdc by the BIOS but will be hdd in the system. That was with RHEL3, but
worth testing.
Hi Bill,
I did not try this particular com
On Sun, Feb 03, 2008 at 10:56:01AM -0500, Bill Davidsen wrote:
> Keld Jørn Simonsen wrote:
> > I found a sentence in the HOWTO:
> >
> >"raid1 and raid 10 always writes all data to all disks"
> >
> >I think this is wrong for raid10.
> >
> >eg
> >
> >a raid10,f2 of 4 disks only writes to two of the d
On Sun, Feb 03, 2008 at 10:53:51AM -0500, Bill Davidsen wrote:
> Keld Jørn Simonsen wrote:
> >This is intended for the linux raid howto. Please give comments.
> >It is not fully ready /keld
> >
> >Howto prepare for a failing disk
> >
> >6. /etc/mdadm.conf
> >
> >Something here on /etc/mdadm.conf. W
Bill Davidsen wrote:
Richard Scobie wrote:
A followup for the archives:
I found this document very useful:
http://lists.us.dell.com/pipermail/linux-poweredge/2003-July/008898.html
After modifying my grub.conf to refer to (hd0,0), reinstalling grub on
hdc with:
grub> device (hd0) /dev/hdc
Keld Jørn Simonsen wrote:
I found a sentence in the HOWTO:
"raid1 and raid 10 always writes all data to all disks"
I think this is wrong for raid10.
eg
a raid10,f2 of 4 disks only writes to two of the disks -
not all 4 disks. Is that true?
I suspect that really should have read "all mir
Keld Jørn Simonsen wrote:
This is intended for the linux raid howto. Please give comments.
It is not fully ready /keld
Howto prepare for a failing disk
The following will describe how to prepare a system to survive
if one disk fails. This can be important for a server which is
intended to alway
Richard Scobie wrote:
A followup for the archives:
I found this document very useful:
http://lists.us.dell.com/pipermail/linux-poweredge/2003-July/008898.html
After modifying my grub.conf to refer to (hd0,0), reinstalling grub on
hdc with:
grub> device (hd0) /dev/hdc
grub> root (hd0,0)
gr
Berni wrote:
Hi
I created the raid arrays during install with the text-installer-cd.
So first the raid array was created and then the system was installed on it.
I don't have a extra /boot partition its on the root (/) partition and the root
is the md0 in the raid. Every partition for ubun
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