On Wed, Oct 14, 2009 at 08:55:16PM +0200, rai...@ultra-secure.de wrote:
> > nate wrote:
> > if you have a SAN that supports logical volumes that have snapshot and
> > grow and such, I'm not sure why you'd bother with LVM on top of that, it
> > would just further obfuscate things.
>
>
> And how do
Ray Van Dolson wrote:
> Couldn't you accomplish this with the "alias" parameter in your
> multipath.conf file per LUN? We have this set up here so there's a
> /dev/mpath/ based on the WWID.
I suppose I could, I recall the friendly name thing a while
ago, it seemed more complicated than using LVM
>
> And how do you grow a filesystem without LVM?
> Online?
It certainly is not easy!
http://www.redhat.com/docs/en-US/Red_Hat_Enterprise_Linux/html/Online_Storage_Reconfiguration_Guide/index.html
Here's hoping for an integrated solution in EL6, but from the looks of
Fedora, it's not likely is it
> nate wrote:
> if you have a SAN that supports logical volumes that have snapshot and
> grow and such, I'm not sure why you'd bother with LVM on top of that, it
> would just further obfuscate things.
And how do you grow a filesystem without LVM?
Online?
_
On Wed, Oct 14, 2009 at 11:22:36AM -0700, nate wrote:
> John R Pierce wrote:
>
> > if you have a SAN that supports logical volumes that have snapshot and
> > grow and such, I'm not sure why you'd bother with LVM on top of that, it
> > would just further obfuscate things.
>
> Makes life easier for
John R Pierce wrote:
> if you have a SAN that supports logical volumes that have snapshot and
> grow and such, I'm not sure why you'd bother with LVM on top of that, it
> would just further obfuscate things.
Makes life easier for me when using MPIO, auto detection of the
volume no matter what pat
On Wed, Oct 14, 2009 at 10:52:19AM -0700, nate wrote:
> James A. Peltier wrote:
>
> > Mounting a snapshot requires the generation of a new UUID for the file
> > system in order to be able to use it. Perhaps this is a XFS limitation,
> > but unlike ZFS they aren't immediately available. We need t
On Wed, Oct 14, 2009 at 12:39:54PM -0500, Eugene Vilensky wrote:
> On Wed, Oct 14, 2009 at 12:36 PM, James A. Peltier
> wrote:
> > They take up 16MB of space regardless of the amount of data that changes. A
> > single bit changes and 16MB is taken up. This is not tunable.
>
> I know they run L
On Wed, Oct 14, 2009 at 10:36:01AM -0700, James A. Peltier wrote:
> On Tue, 13 Oct 2009, Pasi Kärkkäinen wrote:
>
> >
> >Hmm.. what kind of problems do you have with snapshots?
>
> Let's see
>
> They take up 16MB of space regardless of the amount of data that changes.
> A single bit changes an
nate wrote:
> Another side effect of snapshots and using LVM for example(applies
> to any vendor's block based snapshots), is you can't easily take
> a snapshot of an LVM-based file system, then mount that snapshot
> on the same system, LVM will bitch.
if you have a SAN that supports logical vol
James A. Peltier wrote:
> Mounting a snapshot requires the generation of a new UUID for the file
> system in order to be able to use it. Perhaps this is a XFS limitation,
> but unlike ZFS they aren't immediately available. We need to perform this
> action extensively to backup file systems and a
On Wed, Oct 14, 2009 at 12:36 PM, James A. Peltier wrote:
> They take up 16MB of space regardless of the amount of data that changes. A
> single bit changes and 16MB is taken up. This is not tunable.
I know they run Linux but is the internal file system some secret
sauce or did they just slap t
On Tue, 13 Oct 2009, Pasi Kärkkäinen wrote:
Hmm.. what kind of problems do you have with snapshots?
Let's see
They take up 16MB of space regardless of the amount of data that changes.
A single bit changes and 16MB is taken up. This is not tunable.
Mounting a snapshot requires the genera
On Mon, Oct 12, 2009 at 07:04:21PM -0500, Eugene Vilensky wrote:
> Hi List,
>
> Does anyone here use Dell Equallogic IP SAN? If so, do you have any
> immediate high points / low points you wouldn't mind discussing on- or
> off-list ?
>
Yep, I've been using Equallogic iSCSI arrays with Linux/RHE
On Mon, Oct 12, 2009 at 06:44:55PM -0700, James A. Peltier wrote:
> On Mon, 12 Oct 2009, Eugene Vilensky wrote:
>
> > Hi List,
> >
> > Does anyone here use Dell Equallogic IP SAN? If so, do you have any
> > immediate high points / low points you wouldn't mind discussing on- or
> > off-list ?
> >
We use a pair for production and DR.
Email me off list and I would be glad to discuss.
Andrew
--Original Message--
From: Eugene Vilensky
Sender: centos-boun...@centos.org
To: CentOS mailing list
ReplyTo: CentOS mailing list
Subject: [CentOS] Dell Equallogic
Sent: Oct 12, 2009 8:04 PM
Hi
On Mon, 12 Oct 2009, Eugene Vilensky wrote:
> Hi List,
>
> Does anyone here use Dell Equallogic IP SAN? If so, do you have any
> immediate high points / low points you wouldn't mind discussing on- or
> off-list ?
>
Yes, it works fine, however, we don't use the snapshot capability of the
system
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