Re: Any advice for a user about to use LVM for the first time?

2015-01-02 Thread Kevin O'Gorman
On Thu, Jan 1, 2015 at 10:42 PM, Bob Proulx b...@proulx.com wrote: Kevin O'Gorman wrote: I do want to insulate the one drive from any failures on the other three. That data is not at all temporary, but it is backed up regularly. I want to limit it's failure profile. Using mdadm RAID?

Re: Any advice for a user about to use LVM for the first time?

2015-01-02 Thread Gary Dale
On 31/12/14 04:57 PM, Kevin O'Gorman wrote: I've just gotten 4 4TB drives to replace my 4 2TB drives. I'm wanting to have one normal 4TB drive and one logical 12TB drive, so I will make three physical drives into one group, one logical volume and one partition support the big partition. My

Re: Any advice for a user about to use LVM for the first time?

2015-01-02 Thread Bob Proulx
Kevin O'Gorman wrote: Bob Proulx wrote: For people adding additional mdadm raid volumes later they need to do some configuration for it. This is exactly my case. I'm installing a RAID-0 for gigantic transient files. I do not anticipate using RAID for the system, partly because all bays

Re: Any advice for a user about to use LVM for the first time?

2015-01-02 Thread Gary Dale
On 02/01/15 11:57 AM, Kevin O'Gorman wrote: On Fri, Jan 2, 2015 at 8:50 AM, Gary Dale garyd...@torfree.net mailto:garyd...@torfree.net wrote: On 31/12/14 04:57 PM, Kevin O'Gorman wrote: I've just gotten 4 4TB drives to replace my 4 2TB drives. I'm wanting to have one

Re: Any advice for a user about to use LVM for the first time?

2015-01-02 Thread Kevin O'Gorman
On Fri, Jan 2, 2015 at 11:57 AM, Bob Proulx b...@proulx.com wrote: Kevin O'Gorman wrote: There's one remaining question I have, which is fortunately not urgent. It's not clear what I'm going to have to do to bring the RAID online after a reboot. It doesn't seem to be as simple as

Re: Any advice for a user about to use LVM for the first time?

2015-01-02 Thread Bob Proulx
Kevin O'Gorman wrote: There's one remaining question I have, which is fortunately not urgent. It's not clear what I'm going to have to do to bring the RAID online after a reboot. It doesn't seem to be as simple as tweaking /etc/fstab, like it is on bare drives. I suppose I can do an assemble

Re: Any advice for a user about to use LVM for the first time?

2015-01-02 Thread Tapani Tarvainen
On Jan 01 23:42, Bob Proulx (b...@proulx.com) wrote: Using mdadm RAID? Or LVM raid? I have personally only used mdadm raid and not lvm raid. Yes. LVM raid is today usually best to avoid. I generally use mdadm for raid (unless hardware raid is available) and put lvm on top of that. And I

Re: Any advice for a user about to use LVM for the first time?

2015-01-01 Thread David Christensen
On 01/01/2015 05:41 PM, D. R. Evans wrote: David Christensen wrote on 01/01/2015 05:53 PM: restore). More recently, I learned enough zfs-fuse for single and mirrored data drives. I later migrated to ZOL for performance. Administration of ZFS file systems requires a lot more knowledge and

Re: Any advice for a user about to use LVM for the first time?

2015-01-01 Thread D. R. Evans
David Christensen wrote on 01/01/2015 05:53 PM: restore). More recently, I learned enough zfs-fuse for single and mirrored data drives. I later migrated to ZOL for performance. Administration of ZFS file systems requires a lot more knowledge and planning. This must be one of those

Re: Any advice for a user about to use LVM for the first time?

2015-01-01 Thread David Christensen
On 12/31/2014 01:57 PM, Kevin O'Gorman wrote: I've just gotten 4 4TB drives to replace my 4 2TB drives. I'm wanting to have one normal 4TB drive and one logical 12TB drive, so I will make three physical drives into one group, one logical volume and one partition support the big partition. My

Re: Any advice for a user about to use LVM for the first time?

2015-01-01 Thread David Christensen
On 01/01/2015 04:24 PM, Kevin O'Gorman wrote: On Thu, Jan 1, 2015 at 12:51 PM, David Christensen dpchr...@holgerdanske.com wrote: On 12/31/2014 01:57 PM, Kevin O'Gorman wrote: I've just gotten 4 4TB drives to replace my 4 2TB drives. I'm wanting to have one normal 4TB drive and one logical

Re: Any advice for a user about to use LVM for the first time?

2015-01-01 Thread Bob Proulx
Kevin O'Gorman wrote: I do want to insulate the one drive from any failures on the other three. That data is not at all temporary, but it is backed up regularly. I want to limit it's failure profile. Using mdadm RAID? Or LVM raid? I have personally only used mdadm raid and not lvm raid.

Any advice for a user about to use LVM for the first time?

2014-12-31 Thread Kevin O'Gorman
I've just gotten 4 4TB drives to replace my 4 2TB drives. I'm wanting to have one normal 4TB drive and one logical 12TB drive, so I will make three physical drives into one group, one logical volume and one partition support the big partition. My system actually resides on a fifth: an SSD drive.