No, the /dev/dm* devices are recreated every reboot. Only the wwids in /dev/mapper/ are persistant. (/dev/disk/by-name/<wwid>) Use them for mountpoint in the fstab. /dev/disk/by-name/data1 /usr/sap reiserfs acl,user_xattr 1 2 You can alias the horrible wwid by logical names in the multipath.conf. E.g. multipaths { multipath { #mountpoint /data wwid 360060160403219007aa7b461c917db11 alias data } } This will create an link /dev/mapper/data1 -> /dev/dm-<actualNumber> Take a look at the boot.multipath script. *snip* # Clear /dev/disk/by-name/ prior to start-up; multipath will # recreate them. rm -f /dev/disk/by-name/* 2>&1 >/dev/null *snap* Regards, Manuel > -----Ursprüngliche Nachricht----- > Von: dm-devel-bounces@xxxxxxxxxx > [mailto:dm-devel-bounces@xxxxxxxxxx] Im Auftrag von lnx dm > Gesendet: Freitag, 27. Oktober 2006 09:35 > An: dm > Betreff: dm-0 > > will dm-0 will always point to the same device across reboots > irrespective of the the order in which devices are detected ? > which is persistent /dev/dm-0 or /dev/mapper/<wwid> ? > > # ls -l /dev/mpath/ > lrwxrwxrwx 1 root root 7 Mar 24 01:45 > 3600805f300176640a435a927359c0003 -> ../dm-0 > > -lnxdm > > __________________________________________________ > Do You Yahoo!? > Tired of spam? Yahoo! Mail has the best spam protection > around http://mail.yahoo.com > > -- > dm-devel mailing list > dm-devel@xxxxxxxxxx > https://www.redhat.com/mailman/listinfo/dm-devel > -- dm-devel mailing list dm-devel@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/dm-devel