Erich Focht wrote: > Hi, > > the lustre manual says: > > 2.2.1.5 Stopping a Server > To stop a server: > $ umount -f /mnt/test/ost0 > The '-f' flag means "force"; force the server to stop WITHOUT RECOVERY. > Without the '-f' flag, "failover" is > implied, meaning the next time the server is started it goes through the > recovery procedure. > > So we were tempted to use "umount -f" when doing a failover of OSTs, but we > see problems (I/O errors on clients) during the failover when doing this. > Without the "-f" flag we get no I/O errors. > yes. That is the difference between "forced" or not. Forced means stop with errors for clients, unforced means take more time and do recovery at restart. > Is there a recommended way of dealing with the umount at failover? > Don't use -f > Best regards, > Erich > > _______________________________________________ > Lustre-discuss mailing list > [email protected] > http://lists.lustre.org/mailman/listinfo/lustre-discuss >
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