Stable ZFS on i386?

[rostreich]

Me again

How can i get ZFS to work stable on i386 platform? I tried 4 different mainboard with different RAM size, but always under 2GB, because something bad with the mobo.

It crashes all the time when i start to write some bigger files 1 GB and up. Speed doesn't matter, it will be a cold backup NAS.

[ChriZathens]

Did you try to use zfs kernel tune and adjust for 2GB Ram?

[rostreich]

Nope.

I tried kernel tune today for the first time on my x64 box.

Do you know that it will work on my i386 box?

[raulfg3]

Use ZFS kerntune, disble prefetch and DO NOT use advanced ZFS features like dedupe, (or others that need lots and lots of RAM) , etc...

PD: work on x86 and x64 no problem

[rostreich]

Code: Select all

DO NOT use advanced ZFS features like dedupe

I know, I don't even use it on my big box.

I will try kerntune in a few hours from a fresh install.

[dodger]

How did you get on with kern tune?

If it's ok then I might give it a go

[rostreich]

How did you get on with kern tune?

If it's ok then I might give it a go

I didn't had the time so far, but right at the moment, I am on it.

Will report later or tomorrow, because I have to do some other tests.

But you should try it anyway, on my x64 box it's running very good!

Edit: It works just nice!

It changed my loader.conf to the following:

Code: Select all

mfsroot_load="YES"
mfsroot_type="mfs_root"
mfsroot_name="/mfsroot"
hw.est.msr_info="0"
hw.hptrr.attach_generic="0"
kern.maxfiles="65536"
kern.maxfilesperproc="50000"
kern.cam.boot_delay="8000"
autoboot_delay="3"
isboot_load="YES"
zfs_load="YES"
# ZFS kernel tune
vm.kmem_size="512M"
vfs.zfs.arc_min="128M"
vfs.zfs.arc_max="128M"
vfs.zfs.prefetch_disable="1"
vfs.zfs.txg.timeout="5"
vfs.zfs.vdev.max_pending="10"
vfs.zfs.vdev.min_pending="4"
vfs.zfs.write_limit_override="0"
vfs.zfs.no_write_throttle="0"

It is stable, doing copy tests all the time now.

Thx guys!