Can't write to the rc.config file

Due to user error, the rc.config file on one of our Alpha 5.1b systems got deleted and the system was later rebooted so came up without any locla configuration.

I tried to recreate rc.config from a similar copy on another Alpha, but I cannot write to the file - it seems to be in some sort of limbo state.

I can rm the nonexistant file (it doesn't say 'No such file or directory" as it would if the file weren't present) but I can't recreate a file with that same name either manually or using rcmgr...

See console logs below - it's almost like the rc.config file is present in the filesystem (AdvFS with LSM mirroring) but not accessible. There aren't any processes running that would have a lock on the file though, as the system is currently booted single user.


INIT: SINGLE-USER MODE
fopen: /etc/rc.config: Invalid argument
# mount -u /
# ls -l /etc/rc.config
lrwxr-xr-x   1 root     system        39 Apr  6 21:08 /etc/rc.config -> ../cluster/members/{memb}/etc/rc.config
# cd /cluster/members/member0/etc
# rm -f rc.config
# ls > rc.config
rc.config: cannot create
# rcmgr set HOSTNAME csgds1
# rcmgr get HOSTNAME
Error: Cannot open /etc/rc.config
#

Any ideas?

thanks.