Would have loved to use a stable branch (ie 8.2) instead of development
(9.0-CURRENT),
though. Especially for the new DELL servers with Perc H200 providing a snapshot
with
the changes would be greatly appreciated!
Hi Holger,
Go for 8-STABLE. Works fine for me. No need for CURRENT for mps(4).
Following some heavy load tests (such as concurrent, subsequent
buildworlds while bonnie++ing around), I can also state that it is very
stable. Have it on a DELL PowerEdge R410 with the PERC H200A adapter and
SAS disks, and it works like a charm. I used gmirror on that, and the
performance is awesome, provided that You tune the sysctl.conf and add:
vfs.read_max=128 which makes sustained reads much faster (among the -b
load default strategy when labeling the mirror).
I don't think there are any other snapshot services still running... so
(assuming
mps(4) actually works with H200) you need to make a build of stable/8 yourself -
the simplest approach is probably to PXE boot the servers and install by hand...
but that's of course not a trivial thing if you never tried it before.
Well, setting up a PXE boot server just for installing one server... :-/
It's easy if you have any other FreeBSD machine of the same architecture
around with 8-STABLE - In fact I also did such a thing once using a
VirtualBox running on a mac some time ago. If you need a quick setup
guide tell me I'll send You a few commands.
You can also take one disk out, attach it to a running FreeBSD machine,
gpart it,
cd /usr/src && make installworld DESTDIR=/mountpoint && make
installkernel DESTDIR=/mountpoint && make distribution DESTDIR=/mountpoint
Edit the few usual suspects such as at least /mountpoint/etc/fstab and
boot the system with the disk..
Regards,
Lorenzo
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