Lustre 1.6 Operations Manual

Options
Option
Description
-b inode buffer blocks
-o output file
Sets the readahead inode blocks to get excellent performance when scanning the
block device.
If an output file is specified, modified pathnames are written to this file. Otherwise,
modified parameters are written to stdout.
-t inode | pathname
-u
Sets the e2scan type if type is inode. The e2scan utility prints modified inode
numbers to stdout. By default, the type is set as pathname.
The e2scan utility lists modified pathnames based on modified inode numbers.
Rebuilds the parent database from scratch. Otherwise, the current parent database
is used.
32.5.3 Utilities to Manage Large Clusters
The following utilities are located in /usr/bin.
lustre_config.sh
The lustre_config.sh utility helps automate the formatting and setup of disks on
multiple nodes. An entire installation is described in a comma-separated file and
passed to this script, which then formats the drives, updates modprobe.conf and
produces high-availability (HA) configuration files.
lustre_createcsv.sh
The lustre_createcsv.sh utility generates a CSV file describing the currently-running
installation.
lustre_up14.sh
The lustre_up14.sh utility grabs client configuration files from old MDTs. When
upgrading Lustre from 1.4.x to 1.6.x, if the MGS is not co-located with the MDT or
the client name is non-standard, this utility is used to retrieve the old client log. For
more information, see Upgrading Lustre.
32-18 Lustre 1.7 Operations Manual • August 2008