Jeff Victor wrote:
I guess the direct question would be "a LOFS-mount of a VxFS filesystem
with QuickIO enabled".
Typically databases want either QuickIO or forcedirectio (on UFS)
enabled so that writes
aren't buffered. Is that still the case if LOFS is mounted on another
DBA's say that writing to a raw device is somewhat equivalent to writing
a file on
Brian Kolaci wrote:
The customer will only accept officially supported options on this
Why exactly would lofs be a bad idea? What is the downside to lofs
than directly using VxFS? With lofs they get the benefit of the
ability to share
one filesystem among multiple zones (not at the same mount point in
the global zone).
But is there anything that would increase/decrease performance by
Is there a major performance difference to running a database with
[EMAIL PROTECTED] wrote:
On Fri, Aug 18, 2006 at 08:52:29AM +0200, Robert Milkowski wrote:
Wednesday, July 26, 2006, 8:31:06 PM, you wrote:
BK> With the performance boosts included in recent solaris
BK> told that there's not much of a difference between handing the
BK> raw devices vs. using a filesystem anymore.
BK> To test this out, my customer would like to try both ufs and vxfs
BK> filesystems in the global zone and lofs mount them to a local
BK> and test the database on that lofs mount.
BK> Are there any options that should be supplied for the lofs
BK> are there any options for the ufs and/or vxfs mounts that
BK> employed to assure the performance should be close to raw
1. lofs is probably a bad idea - mount them directly into a zone
lofs is the only supported option for vxfs.
While lofs is the only officially supported option, mounting
directly in the zone can be accomplished with a work-around. see:
on lofs vs. VxFS vs. RAW?
Not an answer, just a clarification: LOFS essentially re-mounts an
existing filesystem onto an additional mount-point. When using LOFS,
there is always the original fs type to consider. The comparison
would then be
"a LOFS-mount of a UFS filesystem" vs. "a UFS filesystem" vs. "a raw
device." Of course, VxFS can be substituted for UFS.
a filesystem with QuickIO enabled.
zones-discuss mailing list