[lustre-discuss] problem loading zfs properties for a lustre/zfs fs
Faaland, Olaf P.
faaland1 at llnl.gov
Mon Jul 11 16:15:24 PDT 2016
1) What is the output of:
rpm -qa | grep zfs
from that system after it boots?
2) How do those values get into the /etc/modprobe.d/zfs.conf file? Are they there before the node boots, or are modifying that file somehow during the boot process?
Olaf P. Faaland
Livermore Computing
________________________________________
From: lustre-discuss [lustre-discuss-bounces at lists.lustre.org] on behalf of Riccardo Veraldi [Riccardo.Veraldi at cnaf.infn.it]
Sent: Monday, July 11, 2016 3:53 PM
To: lustre-discuss at lists.lustre.org
Subject: [lustre-discuss] problem loading zfs properties for a lustre/zfs fs
Hello,
I am tailoring my system for lustre on ZFS and I am not able to set
these parameters
writing the config file /etc/modprobe.d/zfs.conf with the following options
options zfs zfs_prefetch_disable=1
options zfs zfs_txg_history=120
options zfs metaslab_debug:unload=1
when I check the parameters after boot in /sys/module/zfs/parameters
they are still the defaults, and my modification are not taken.
zfs.conf is being ignored at boot time I do not know why.
I had to do a
echo 1 > /sys/module/zfs/parameters/options zfs zfs_prefetch_disable
inside rc.local
to have it working
I am running RHEL7 with latest kernel and zfs 0.6.5.7-1
any hints ?
thank you
Riccardo
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