NAME
tunefs.lustre − modify the Lustre configuration information on a disk
SYNOPSIS
tunefs.lustre [options] device
DESCRIPTION
tunefs.lustre
is used to modify the configuration information on a Lustre
target disk. This includes upgrading old (pre-Lustre 1.6)
disks. This does not reformat the disk or erase the target
information, but modifying the configuration information can
result in an unusable filesystem. You have been warned.
Changes made here will affect a filesystem only when the
target is next mounted.
OPTIONS
−-comment=comment
Set user comment about this disk, ignored by Lustre.
−-dryrun
Only print what would be done; does not affect the disk
−-erase-params
Remove all previous parameter info
−-failnode=nid,...
Set the NID(s) of a failover partner. This option can be repeated as desired.
−-fsname=filesystem_name
The Lustre filesystem this service will be part of. Default is ’lustre’
−-index=index
Force a particular OST or MDT index
−-mountfsoptions=opts
Set the mount options that will be used when mounting the backing fs. WARNING: unlike earlier versions of tunefs.lustre, this version completely replaces the existing mount options with those specified on the command line, issuing a warning on stderr if any of the default mount options are omitted. The defaults for ldiskfs are OST: errors=remount-ro,mballoc,extents; MGS/MDT: errors=remount-ro,iopen_nopriv,user_xattr. DO NOT alter the default mount options unless you know what you are doing.
|
−-mgs |
Add a configuration management service to this target |
−-mgsnode=nid,...
Set the NID(s) of the MGS node, required for all targets other than the MGS.
−-nomgs
Remove a configuration management service to this target
−-quiet
Print less information.
−-verbose
Print more information.
−-writeconf
Erase all config logs for the filesystem that this MDT is part of, and regenerate them. This is very dangerous. All clients and servers should be stopped. All targets must then be restarted to regenerate the logs. No clients should be started until all targets have restarted. In general this should be executed on the MDT only, not the OSTs.
EXAMPLES
tunefs.lustre --erase-param --mgsnode=<new_nid> --writeconf /dev/sda
Change the MGS NID address. (This should be done on every target disk, since they should all be contacting the same MGS.)
tunefs.lustre --param="failover.node=192.168.0.13@tcp0" /dev/sda
Add a failover NID location for this target
tunefs.lustre --mgs --mdt --fsname=testfs /dev/sda
Upgrade an old 1.4.X Lustre MDT to 1.6. The new filesystem name is "testfs".
tunefs.lustre --writeconf --mgs --mdt --fsname=testfs /dev/sda1
Upgrade an old 1.4.X Lustre MDT to 1.6, and start with brand-new 1.6 configuration logs. All old servers and clients must be stopped.
BUGS
Please report all bugs to Sun Microsystems using http://bugzilla.lustre.org/
AVAILABILITY
tunefs.lustre
is part of the Lustre(7) filesystem package and is
available from Sun Microsystems, Inc via
http://downloads.lustre.org