# tunefs.lustre -h /dev/nvme0n1
checking for existing Lustre data: found
Read previous values:
Target: MGS
Index: unassigned
Lustre FS: test
Mount type: ldiskfs
Flags: 0x4
(MGS )
Persistent mount opts: user_xattr,errors=remount-ro
Parameters:
usage: tunefs.lustre <target type> --backfstype=ldiskfs --fsname=<filesystem name>
--index=<target index> [options] <device>
target types:
--mgs: configuration management service
--nomgs: turn off MGS service on this MDT
options (in order of popularity):
--index=#N: numerical target index (0..N)
required for all targets other than the MGS,
target index may either be a decimal number or
hexadecimal number starting with '0x'
--fsname=<8_char_filesystem_name>: fs targets belong to
required for all targets other than MGS
--mgsnode=<nid>[,<...>]: NID(s) of remote MGS
required for all targets other than MGS
--mountfsoptions=<opts>: permanent Lustre mount options
--backfs-mount-opts=<opts>: backing fs mount options
--failnode=<nid>[,<...>]: NID(s) of backup failover node
mutually exclusive with --servicenode
--servicenode=<nid>[,<...>]: NID(s) of service partners
treat nodes as equal service node, mutually exclusive with --failnode
--param <key>=<value>: set a permanent parameter
e.g. --param sys.timeout=40
--param lov.stripesize=2M
--network=<net>[,<...>]: restrict OST/MDT to network(s)
--erase-param <key>: erase all instances of a parameter
--erase-params: erase all old parameter settings
--writeconf: erase all config logs for this fs.
--nolocallogs: use logs from MGS, not local ones.
--quota: enable space accounting on old 2.x device.
--rename: rename the filesystem name
--mountdata-reset-from=<dev|file>: reset CONFIGS/mountdata file.
--replace: replace an old target with the same index
--comment=<user comment>: arbitrary string (824 bytes)
--dryrun: report what we would do; don't write to disk
--verbose: e.g. show mkfs progress
--force-nohostid: Ignore hostid requirement for ZFS import
-V|--version: output build version of the utility and
exit
--quiet
tunefs.lustre: exiting with 1 (Operation not permitted)
Bug
Minor
