[LUDOC-377] Lustre Manual Bug Report: 25.2.2. Enabling and Tuning Root Squash

Fri, 25 Jan 2019 15:22:47 +0000

Hi,

I think I’ve found a bug in the manual: https://build.hpdd.intel.com/job/lustre-manual/lastSuccessfulBuild/artifact/lustre_manual.xhtml#dbdoclet.50438221_48757 I’ve included it below in case this is the correct place to report it. If not please let me know and I’ll submit it elsewhere.

In section 25.2.2. Enabling and Tuning Root Squash, the bit that says:

Root squash parameters can also be changed with the lctl conf_param command. For example:

mgs# lctl conf_param testfs.mdt.root_squash="1000:101"
mgs# lctl conf_param testfs.mdt.nosquash_nids="*@tcp"

Should be IMHO:

Root squash parameters can also be changed with the lctl conf_param command. For example:

mgs# lctl conf_param mdt.testfs-MDT0000.root_squash="1000:101"
mgs# lctl conf_param mdt.testfs-MDT0000.nosquash_nids="*@tcp"

Here is an example of me using my version compared to the documentation version using Lustre 2.8 on RHEL 7:

0 edi-vf-1-5:audiodb-MDT0000# lctl get_param mdt.audiodb-MDT0000.root_squash
mdt.audiodb-MDT0000.root_squash=0:0
0 edi-vf-1-5:audiodb-MDT0000# lctl set_param mdt.audiodb-MDT0000.root_squash="0:1"
mdt.audiodb-MDT0000.root_squash=0:1
0 edi-vf-1-5:audiodb-MDT0000# lctl get_param mdt.audiodb-MDT0000.root_squash
mdt.audiodb-MDT0000.root_squash=0:1
0 edi-vf-1-5:audiodb-MDT0000# lctl set_param mdt.audiodb-MDT0000.root_squash="0:0"
mdt.audiodb-MDT0000.root_squash=0:0
# Using the documented version.
0 edi-vf-1-5:audiodb-MDT0000# lctl set_param audiodb.mdt.root_squash="0:1"
error: set_param: param_path 'audiodb/mdt/root_squash': No such file or directory
0 edi-vf-1-5:audiodb-MDT0000#

Yours
Faye Gibbins

Whamcloud Community JIRA

[LUDOC-377] Lustre Manual Bug Report: 25.2.2. Enabling and Tuning Root Squash