Re: Removing physical disk from RAID & LVM

[David Brown <david.brown@xxxxxxxxxxxx>]

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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