Andreas Dilger wrote:
On Jun 24, 2007 09:53 -0300, Balagopal Pillai wrote:
For Lustre 1.6, the documentation mentions that lnet needs to be
shutdown before trying to remove the modules. But lctl network unconfigure
fails mentioning an lnet busy error message. I tried the unconfigure after
unmounting the lustre volumes. With simple unmounting of Lustre mgs, mdt
and ost, the server goes into recovery mode after reboot for about 10
minutes.
This is normal, if you haven't unmounted all of the clients.
Since i don't have a failover setup with just one OST, MDT and
MGS, can i safely use umount -f /ost and then do the lnet unconfigure?
You can. Doing so would prevent the still-mounted clients from reconnecting.
If you aren't planning to reconnect the clients you should unmount them
first.
You never need to 'lnet network down' unless you did a 'lnet network up'
previously.
If you've stopped all of your lustre services (servers and clients --
'lctl dl' should return nothing), then
you can remove the modules just using rmmod.
The easiest way is to use "lustre_rmmod" script in /usr/sbin.
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