On 2010-05-31, at 19:20, Wojciech Turek wrote: > Please find below a snippets from Lustre-1.8 manual regarding server > umount with our without failover (-f option). As you can see 4.3.4 > contardics 4.5.1 and 4.5.2. Has something changed or is it a manual > BUG?
I think that 4.3 is correct, and 4.5 is incorrect. > 4.3.4 Unmounting a Server > To stop a Lustre server, use the umount <mount point> command. > For example, to stop ost0 on mount point /mnt/test, run: > > $ umount /mnt/test > Gracefully stopping a server with the umount command preserves the state of > the > connected clients. The next time the server is started, it waits for > clients to reconnect, > and then goes through the recovery procedure. > > If the force (-f) flag is used, then the server evicts all clients and > stops WITHOUT > recovery. Upon restart, the server does not wait for recovery. Any currently > connected clients receive I/O errors until they reconnect. > > 4.5.1 Unmounting a Server (without Failover) > To stop a server (MDS or OSS) without failover, run: > umount <mds|oss mountpoint> > > This stops the server unconditionally, and cleans up client > connections and export > information. When the server restarts, the clients create a new > connection to it. > > 4.5.2 Unmounting a Server (with Failover) > To stop a server (MDS or OSS) with failover, run: > umount -f <MDS|OSS mount point> > > This stops the server and preserves client export information. When the server > restarts, the clients reconnect and resume in-progress transactions. > > > -- > -- > Wojciech Turek > > Assistant System Manager > > High Performance Computing Service > University of Cambridge > _______________________________________________ > Lustre-discuss mailing list > [email protected] > http://lists.lustre.org/mailman/listinfo/lustre-discuss Cheers, Andreas -- Andreas Dilger Lustre Technical Lead Oracle Corporation Canada Inc. _______________________________________________ Lustre-discuss mailing list [email protected] http://lists.lustre.org/mailman/listinfo/lustre-discuss
