lustre errors with a new config

The MDS writes a log file on the MDS device (if you mount a MDS volume, you can see it)

I tried re-writing it, but I decided to reformat it instead (I'd also tried a reboot, but that didn't help either)

MDSDEV: mds mds_UUID /dev/sdb1 ldiskfs no
! /usr/sbin/lctl (22): error: setup: Invalid argument


mds-1:~# lconf -v --node mds-1 /root/config.xml
configuring for host: ['mds-1']
Checking XML modification time
+ debugfs -c -R 'stat /LOGS' /dev/sdb1 2>&1 | grep mtime
xmtime 1177503678 > kmtime 1176793916
Error: MDS startup logs are older than config /root/config.xml. Please run --write_conf on stopped MDS to update. Use '--old_conf' to start anyways.
mds-1:~# lconf -v --node mds-1 --write-conf /root/config.xml
configuring for host: ['mds-1']
Service: network NET_mds-1_lnet NET_mds-1_lnet_UUID
loading module: libcfs srcdir None devdir libcfs
+ /sbin/modprobe libcfs
loading module: lnet srcdir None devdir lnet
+ /sbin/modprobe lnet
+ /sbin/modprobe lnet
loading module: ksocklnd srcdir None devdir klnds/socklnd
+ /sbin/modprobe ksocklnd
Service: ldlm ldlm ldlm_UUID
loading module: lvfs srcdir None devdir lvfs
+ /sbin/modprobe lvfs
loading module: obdclass srcdir None devdir obdclass
+ /sbin/modprobe obdclass
loading module: ptlrpc srcdir None devdir ptlrpc
+ /sbin/modprobe ptlrpc
Service: mdsdev MDD_mds_mds-1 MDD_mds_mds-1_UUID
original inode_size 0
stripe_count 1 inode_size 512
loading module: lquota srcdir None devdir quota
+ /sbin/modprobe lquota
loading module: mdc srcdir None devdir mdc
+ /sbin/modprobe mdc
loading module: osc srcdir None devdir osc
+ /sbin/modprobe osc
loading module: lov srcdir None devdir lov
+ /sbin/modprobe lov
loading module: mds srcdir None devdir mds
+ /sbin/modprobe mds
loading module: ldiskfs srcdir None devdir ldiskfs
+ /sbin/modprobe ldiskfs
loading module: fsfilt_ldiskfs srcdir None devdir lvfs
+ /sbin/modprobe fsfilt_ldiskfs
Service: mdsdev MDD_mds_mds-1 MDD_mds_mds-1_UUID
original inode_size 0
stripe_count 1 inode_size 512
MDSDEV: mds mds_UUID /dev/sdb1 ldiskfs no
+ /usr/sbin/lctl
attach mds mds mds_UUID
quit
+ /usr/sbin/lctl
cfg_device mds
setup /dev/sdb1 ldiskfs
quit
+ /usr/sbin/lctl
ignore_errors
cfg_device $mds
cleanup
detach
quit
! /usr/sbin/lctl (22): error: setup: Invalid argument