RE: datafiles on NFS?
Date: Tue, 11 Mar 2008 17:18:54 -0500
We ran into a specific problem at a previous vendor that I worked for where the datafiles were set to autoextend. When the autoextend maxed out the filesystem, the NFS mount acknowledged writes that didn't actually occur. The tablespace became corrupt. They had to restore from backups. This was about 15 months ago and it was SUSE Linux. This problem may not occur with other flavors of Linux, and they may have fixed it since then.
From: D'Hooge Freek [mailto:Freek.DHooge_at_uptime.be] Sent: Tuesday, March 11, 2008 5:06 PM
To: mzito_at_gridapp.com; Elliott, Patrick; spikey.mcmarbles_at_gmail.com; ORACLE-L Subject: RE: datafiles on NFS?
In this respect it is maybe interesting to note that it is not the netapp itself that has been certified by oracle, but the ontap operating system that runs on the netapp. This means that you can use the netapp simulator as storage device.
Oracle Database Administrator
tel +32(0)3 451 23 82
From: oracle-l-bounce_at_freelists.org [mailto:oracle-l-bounce_at_freelists.org] On Behalf Of Matthew Zito Sent: dinsdag 11 maart 2008 21:16
To: Elliott, Patrick; spikey.mcmarbles_at_gmail.com; ORACLE-L Subject: RE: datafiles on NFS?
We've tried a few of the UNIX NFS implementations with Linux RAC, with the following results:
- Linux NFS Server - CRS fails to start
- Solaris NFS Server - CRS starts, however Oracle does not seem to want to run (we did only nominal testing here, so there could potentially be a scenario where it works)
- OS X Server - Yes, a Mac NFS server seems to work fine for RAC, should you (oddly) happen to have one running around your datacenter.
I know some people have reported success using some vanilla NFS implementations with standalone - iirc, the CRS does some basic NFS sanity checking by trying to open the voting disk with a variety of different flags, and if any of them fail, it promptly shuts itself down. This was a couple of years ago, though, so it could easily have changed. As always, YMMV.
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