|
Home > Archive > alt.os.linux > September 2002 > help for mirroring!!!
You are viewing an archived Text-only version of the thread.
To view this thread in it's original format and/or if you want to reply to
this thread please [click here]
| Author |
help for mirroring!!!
|
|
| Max Loi 2002-09-30, 9:29 am |
| Hi,
I have 2 disks with 2 identical partitions:
hda1 - hdc1 (md0)
hda2 - hdc2 (md1)
I mirrored the md1 partition, but when I try to "raidhotadd" the hda1
partition, I cant because it's busy...
I've tryed also to start my system by floppy, with the same result
Any suggestion?
Thx,
Max
| |
| Kosh Vader 2002-09-30, 9:29 am |
| On Mon, 30 Sep 2002 15:27:04 +0200, "Max Loi" <mloi@avantage.ws>
wrote:
>Hi,
>I have 2 disks with 2 identical partitions:
>
>hda1 - hdc1 (md0)
>hda2 - hdc2 (md1)
>
>I mirrored the md1 partition, but when I try to "raidhotadd" the hda1
>partition, I cant because it's busy...
Of course, /dev/hda1 is actively part of a RAID-1 configuration (for
/dev/md0) with /dev/hdc1. It cannot also be part of a RAID-1
configuration for /dev/md1.
What exactly are you trying to do?
Chris
>I've tryed also to start my system by floppy, with the same result
>
>Any suggestion?
>
>Thx,
>Max
>
>
| |
| Max Loi 2002-09-30, 9:29 am |
| Ok, let me explain better =)
I created my raid1 as the following raidtab
foxbox2:~# cat /etc/raidtab
#BOOT Array
raiddev /dev/md0
raid-level 1
nr-raid-disks 2
# chunk-size 32
#Spare disks
nr-spare-disks 0
persistent-superblock 1
device /dev/hda1
failed-disk 0
device /dev/hdc1
raid-disk 1
#ROOT Array
raiddev /dev/md1
raid-level 1
nr-raid-disks 2
# chunk-size 32
#Spare disks
nr-spare-disks 0
persistent-superblock 1
device /dev/hdc2
raid-disk 0
device /dev/hda2
raid-disk 1
And this is the /proc/mdstat
foxbox2:~# cat /proc/mdstat
Personalities : [raid1]
read_ahead 1024 sectors
md0 : active raid1 hdc1[0]
4883648 blocks [2/1] [U_]
md1 : active raid1 hdc2[0] hda2[1]
33688256 blocks [2/2] [UU]
unused devices: <none>
The md1 is mirroring and it's ok.
Now I need to hotadd the hda1 to md0
When I try to make mkfs or mke2fs on /dev/hda1....
foxbox2:~# mkfs /dev/hda1
mke2fs 1.27 (8-Mar-2002)
/dev/hda1 is mounted; will not make a filesystem here!
But...
foxbox2:~# df
Filesystem 1k-blocks Used Available Use% Mounted on
/dev/md0 4806904 384920 4177800 9% /
/dev/md1 33158648 32928 31441308 1% /var
The hda1 is not mounted, and if I try to unmount it, system reply that hda1
is not mounted.
I tried to boot my system from floppy, but the end is the same.
Thx for your help and excuse me for my "english" =P
Max
"Kosh Vader" <koshvader@vorlonempire.org> wrote in message
news:vpkgpugkgfbdvdhcubiei52mf
rrg8itapf@4ax.com...
> On Mon, 30 Sep 2002 15:27:04 +0200, "Max Loi" <mloi@avantage.ws>
> wrote:
>
> >Hi,
> >I have 2 disks with 2 identical partitions:
> >
> >hda1 - hdc1 (md0)
> >hda2 - hdc2 (md1)
> >
> >I mirrored the md1 partition, but when I try to "raidhotadd" the hda1
> >partition, I cant because it's busy...
>
> Of course, /dev/hda1 is actively part of a RAID-1 configuration (for
> /dev/md0) with /dev/hdc1. It cannot also be part of a RAID-1
> configuration for /dev/md1.
>
> What exactly are you trying to do?
>
> Chris
>
> >I've tryed also to start my system by floppy, with the same result
> >
> >Any suggestion?
> >
> >Thx,
> >Max
> >
> >
>
>
| |
| Kosh Vader 2002-09-30, 9:29 am |
| On Mon, 30 Sep 2002 15:49:33 +0200, "Max Loi" <mloi@avantage.ws>
wrote:
>Ok, let me explain better =)
>I created my raid1 as the following raidtab
>
>foxbox2:~# cat /etc/raidtab
>#BOOT Array
>raiddev /dev/md0
>raid-level 1
>nr-raid-disks 2
># chunk-size 32
>#Spare disks
>nr-spare-disks 0
>persistent-superblock 1
>device /dev/hda1
>failed-disk 0
>device /dev/hdc1
>raid-disk 1
Okay...
>#ROOT Array
>raiddev /dev/md1
>raid-level 1
>nr-raid-disks 2
># chunk-size 32
>#Spare disks
>nr-spare-disks 0
>persistent-superblock 1
>device /dev/hdc2
>raid-disk 0
>device /dev/hda2
>raid-disk 1
Okay...
>And this is the /proc/mdstat
>
>foxbox2:~# cat /proc/mdstat
>Personalities : [raid1]
>read_ahead 1024 sectors
>md0 : active raid1 hdc1[0]
>4883648 blocks [2/1] [U_]
I understand now, /dev/hda1 is no longer part of the active RAID-1
with /dev/hdc1...
>md1 : active raid1 hdc2[0] hda2[1]
>33688256 blocks [2/2] [UU]
>unused devices: <none>
Good...
>The md1 is mirroring and it's ok.
>Now I need to hotadd the hda1 to md0
Use "raidhotadd /dev/md0 /dev/hda1"
This will allow the mirror to be rebuilt again.
>When I try to make mkfs or mke2fs on /dev/hda1....
Why do this? There is no need for that.
>foxbox2:~# mkfs /dev/hda1
>mke2fs 1.27 (8-Mar-2002)
>/dev/hda1 is mounted; will not make a filesystem here!
No, no... don't try formatting.
Chris
| |
| Kosh Vader 2002-09-30, 10:29 am |
| On Mon, 30 Sep 2002 15:49:33 +0200, "Max Loi" <mloi@avantage.ws>
wrote:
>Ok, let me explain better =)
>I created my raid1 as the following raidtab
>
>foxbox2:~# cat /etc/raidtab
>#BOOT Array
>raiddev /dev/md0
>raid-level 1
>nr-raid-disks 2
># chunk-size 32
>#Spare disks
>nr-spare-disks 0
>persistent-superblock 1
>device /dev/hda1
>failed-disk 0
>device /dev/hdc1
>raid-disk 1
Okay...
>#ROOT Array
>raiddev /dev/md1
>raid-level 1
>nr-raid-disks 2
># chunk-size 32
>#Spare disks
>nr-spare-disks 0
>persistent-superblock 1
>device /dev/hdc2
>raid-disk 0
>device /dev/hda2
>raid-disk 1
Okay...
>And this is the /proc/mdstat
>
>foxbox2:~# cat /proc/mdstat
>Personalities : [raid1]
>read_ahead 1024 sectors
>md0 : active raid1 hdc1[0]
>4883648 blocks [2/1] [U_]
I understand now, /dev/hda1 is no longer part of the active RAID-1
with /dev/hdc1...
>md1 : active raid1 hdc2[0] hda2[1]
>33688256 blocks [2/2] [UU]
>unused devices: <none>
Good...
>The md1 is mirroring and it's ok.
>Now I need to hotadd the hda1 to md0
Use "raidhotadd /dev/md0 /dev/hda1"
This will allow the mirror to be rebuilt again.
>When I try to make mkfs or mke2fs on /dev/hda1....
Why do this? There is no need for that.
>foxbox2:~# mkfs /dev/hda1
>mke2fs 1.27 (8-Mar-2002)
>/dev/hda1 is mounted; will not make a filesystem here!
No, no... don't try formatting.
Chris
|
|
|
|
|