Re: Possible to add an LVM to existing Wheezy box
On 31/12/2013 16:44, Shane Johnson wrote:
Some more information would be helpful as well. Does the existing data
contain the OS? What are you trying to achieve by moving the data?
More info: existing partition
The existing partition would be from our 'filesystem backup' machine,
which runs an earlier version of Debian. It runs on a 2TB disk with
several partitions; mostly OS, but one partition of 1.7TB purely for
filesystem backup data. All partitions (except /boot and swap) are
formatted as XFS. That backup machine is becoming unreliable, and I
want to take the 2TB disk from it and install it in a different, new,
Wheezy box which will then takeover the 'backup' role on our network.
We won't use the OS partitions on that disk, we'll only use the
1.7TB data partition. The data partition contains several years'
worth of incremental backups, and provides us with the possibility to
recover inadvertently deleted or changed files, even if deletion is
not noticed for some considerable time. It also provides the
historical context of what data was available to us during our
projects, which can be important. This backup data now occupies
virtually all of its 1.7TB partition, which is the reason for wanting
to move to a larger filesystem space.
More info: the OS
The existing backup machine's OS will not be used when the disk is
inserted into the new Wheezy box. The new box is already running
Wheezy from a 250GB disk. The motherboard has connectivity for 3 more
drives; my hope, if it were possible, would be to introduce the backup
machine's disk as one of those, and a brand new 2TB disk as another.
The Wheezy box will then have 3 disks:
sda - 250GB, D7 OS
sdb - 2TB, but only sdb6 (1.7TB) used, part of LVM
sdc - 2TB, part of LVM
In short, I want to preserve our backup facility by removing it from a
possibly unreliable box, expanding the space available for backup
increments, and replacing the backup machine with the new box.
I understand your question - I should, perhaps, have explained in the
first instance that I didn't need to preserve the OS, only a data
partition. Do you still think what I want to do is possible?
Eduardo's suggestion of creating a new empty LVM might work, otherwise.
regards, Ron
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