Hi,
yes, using slogs is the best solution.
Meanwhile, using mirrored slogs from other servers' RAM-Disks running on UPSs
seem like an interesting idea, if the reliability of UPS-backed RAM is deemed
reliable enough for the purposes of the NFS server.
Thanks for siggesting this!
Cheers,
Constantin
Ross wrote:
> Well, it might be even more of a bodge than disabling the ZIL, but how about:
>
> - Create a 512MB ramdisk, use that for the ZIL
> - Buy a Micro Memory nvram PCI card for £100 or so.
> - Wait 3-6 months, hopefully buy a fully supported PCI-e SSD to replace the
> Micro Memory card.
>
> The ramdisk isn't an ideal solution, but provided you don't export the pool
> with it offline, it does work. We used it as a stop gap solution for a
> couple of weeks while waiting for a Micro Memory nvram card.
>
> Our reasoning was that our server's on a UPS and we figured if something
> crashed badly enough to take out something like the UPS, the motherboard,
> etc, we'd be loosing data anyway. We just made sure we had good backups in
> case the pool got corrupted and crossed our fingers.
>
> The reason I say wait 3-6 months is that there's a huge amount of activity
> with SSD's at the moment. Sun said that they were planning to have flash
> storage launched by Christmas, so I figure there's a fair chance that we'll
> see some supported PCIe cards by next Spring.
> --
> This message posted from opensolaris.org
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--
Constantin Gonzalez Sun Microsystems GmbH, Germany
Principal Field Technologist http://blogs.sun.com/constantin
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