Re: [zfs-discuss] Is this a workable ORACLE disaster recovery solution?
Bruce Shaw wrote:
Mark J Musante [EMAIL PROTECTED] wrote:
Maybe I'm misunderstanding what you're saying, but 'zfs clone' is
exactly
the way to mount a snapshot. Creating a clone uses up a negligible
amount
of disk space, provided you never write to it. And you can always set
readonly=on if that's a concern.
So something like:
zfs snapshot fastsan/[EMAIL PROTECTED]
zfs clone fastsan/[EMAIL PROTECTED] fastsan/zfs3/night
zfs set readonly=on fastsan/zfs3/night
...do backup...
zfs destroy fastsan/zfs3/night
Yep. Don't forget to destroy the snapshot as well, if you want your
space back ('zfs destroy fastsan/[EMAIL PROTECTED]').
That said, if it works to point Legato at the .zfs/snapshot/nightly
directory, then that seems like less steps.
--matt
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Re: [zfs-discuss] Is this a workable ORACLE disaster recovery solution?
On Thu, 10 May 2007, Bruce Shaw wrote: I don't have enough disk to do clones and I haven't figured out how to mount snapshots directly. Maybe I'm misunderstanding what you're saying, but 'zfs clone' is exactly the way to mount a snapshot. Creating a clone uses up a negligible amount of disk space, provided you never write to it. And you can always set readonly=on if that's a concern. Regards, markm ___ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
RE: [zfs-discuss] Is this a workable ORACLE disaster recovery solution?
Mark J Musante [EMAIL PROTECTED] wrote: Maybe I'm misunderstanding what you're saying, but 'zfs clone' is exactly the way to mount a snapshot. Creating a clone uses up a negligible amount of disk space, provided you never write to it. And you can always set readonly=on if that's a concern. So something like: zfs snapshot fastsan/[EMAIL PROTECTED] zfs clone fastsan/[EMAIL PROTECTED] fastsan/zfs3/night zfs set readonly=on fastsan/zfs3/night ...do backup... zfs destroy fastsan/zfs3/night This email and any files transmitted with it are confidential and intended solely for the use of the individual or entity to whom they are addressed. If you have received this email in error please notify the system manager. This message contains confidential information and is intended only for the individual named. If you are not the named addressee you should not disseminate, distribute or copy this e-mail. ___ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
Re: [zfs-discuss] Is this a workable ORACLE disaster recovery solution?
[EMAIL PROTECTED] wrote on 05/10/2007 02:19:17 PM: I have a scenario where I have several ORACLE databases. I'm trying to keep system downtime to a minimum for business reasons. I've created zpools on three devices, an internal 148 Gb drive (data) and two partitions on an HP SAN. HP won't do JBOD so I'm stuck with relying upon HP to give me a clean partition and do all the dirty work in the background. On the SAN I've got slow disk and fast disk. Hence, I've created the following: I do not get it -- your goal is to keep downtime to a minimum and you are forgoing hot (online) backups? Even with snap/clones you are still thrashing the same volume and db performance will be degraded as the data is read from disk for the backup, you really gain little going to cold state. http://orafaq.com/faqdbabr.htm#HOW Networker has an oracle hot backup extension -- or you can do it on the cheap with a pre/post script (google rman). http://software.emc.com/products/software_az/networker_module_for_oracle.htm -Wade ___ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
