* Removing physical disk from RAID & LVM
@ 2012-05-15 5:24 Tero Mäntyvaara
2012-05-15 8:58 ` David Brown
2012-05-22 2:12 ` Tero Mäntyvaara
0 siblings, 2 replies; 3+ messages in thread
From: Tero Mäntyvaara @ 2012-05-15 5:24 UTC (permalink / raw)
To: linux-raid
Hi,
I have filesystem build up with 5 x 320 GB disks with identical
partitions. Disks have 2 partitions and the first one is dedicated for
RAID-1 (/dev/md0) and second one is dedicated for RAID-5 (/dev/md1). The
disk /dev/md0 is mounted as /boot and the /dev/md1 is prepared for LVM.
PE size is 32 MiB and there is 38035 PEs.
I am going to remove one 320 GB disk and have already reduced the sizes
of existing LV:s. 1) What is the sufficient free PE number before I can
imagine shrinking of RAID-5 device? 2) How should I procede after having
enough free PE:s?
Tero
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: Removing physical disk from RAID & LVM
2012-05-15 5:24 Removing physical disk from RAID & LVM Tero Mäntyvaara
@ 2012-05-15 8:58 ` David Brown
2012-05-22 2:12 ` Tero Mäntyvaara
1 sibling, 0 replies; 3+ messages in thread
From: David Brown @ 2012-05-15 8:58 UTC (permalink / raw)
To: Tero Mäntyvaara; +Cc: linux-raid
On 15/05/2012 07:24, Tero Mäntyvaara wrote:
> Hi,
>
> I have filesystem build up with 5 x 320 GB disks with identical
> partitions. Disks have 2 partitions and the first one is dedicated for
> RAID-1 (/dev/md0) and second one is dedicated for RAID-5 (/dev/md1). The
> disk /dev/md0 is mounted as /boot and the /dev/md1 is prepared for LVM.
> PE size is 32 MiB and there is 38035 PEs.
>
> I am going to remove one 320 GB disk and have already reduced the sizes
> of existing LV:s. 1) What is the sufficient free PE number before I can
> imagine shrinking of RAID-5 device? 2) How should I procede after having
> enough free PE:s?
>
Are you removing the disk permanently, or do you plan to replace it?
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^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: Removing physical disk from RAID & LVM
2012-05-15 5:24 Removing physical disk from RAID & LVM Tero Mäntyvaara
2012-05-15 8:58 ` David Brown
@ 2012-05-22 2:12 ` Tero Mäntyvaara
1 sibling, 0 replies; 3+ messages in thread
From: Tero Mäntyvaara @ 2012-05-22 2:12 UTC (permalink / raw)
Cc: linux-raid
I was going to remove the one permanently.
Tero
On 15.5.2012 8:24, Tero Mäntyvaara wrote:
> Hi,
>
> I have filesystem build up with 5 x 320 GB disks with identical
> partitions. Disks have 2 partitions and the first one is dedicated
> for RAID-1 (/dev/md0) and second one is dedicated for RAID-5
> (/dev/md1). The disk /dev/md0 is mounted as /boot and the /dev/md1
> is prepared for LVM. PE size is 32 MiB and there is 38035 PEs.
>
> I am going to remove one 320 GB disk and have already reduced the
> sizes of existing LV:s. 1) What is the sufficient free PE number
> before I can imagine shrinking of RAID-5 device? 2) How should I
> procede after having enough free PE:s?
>
>
> Tero
>
> -- To unsubscribe from this list: send the line "unsubscribe
> linux-raid" in the body of a message to majordomo@vger.kernel.org
> More majordomo info at http://vger.kernel.org/majordomo-info.html
>
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^ permalink raw reply [flat|nested] 3+ messages in thread
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