From: James Hawtin <oolon@ankh.org>
To: LVM general discussion and development <linux-lvm@redhat.com>
Subject: Re: [linux-lvm] how can I setup software RAID1 on a running LVM system
Date: Wed, 17 Aug 2011 14:06:10 +0100 [thread overview]
Message-ID: <4E4BBCC2.3050607@ankh.org> (raw)
In-Reply-To: <20110817075603.79ffbe4b@bettercgi.com>
Ray Morris wrote:
> "man mdadm" or:
> http://tinyurl.com/4pjnu43
>
Alturnatively he might want to create a mirror using LVM not a block
device. Answer when you create the LV using "lvcreate" use the -m option
to set the number of mirror copies. Alturnatively you can use lvconvert
to change a normal LV into a mirrored one.
The question of how to get the system back if a disk fails in a tricky
one.... If a disk fails the system should keep on working as there is a
copy of the information so it will continue to work, Hardware might have
problems with the drive if it is not a clean failure though, what is
needed is to reduce out the damaged disk and add a new undamaged one,
the one problem is the BOOT block if the disk is the boot device, then
you might need use grub to setup a new boot block on the new device.
James
prev parent reply other threads:[~2011-08-17 13:06 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-08-16 5:11 [linux-lvm] how can I setup software RAID1 on a running LVM system beklan
2011-08-17 6:06 ` Claus Koch
2011-08-17 12:56 ` Ray Morris
2011-08-17 13:06 ` James Hawtin [this message]
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