[CentOS] RAID1 migration - /dev/md1 is not there
Les Mikesell
lesmikesell at gmail.comTue Apr 1 03:49:47 UTC 2008
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Sam Beam wrote: > I am trying to convert an existing IDE one-disk system to RAID1 using the > general strategy found here: > > http://lists.centos.org/pipermail/centos/2005-March/003813.html > > But I am stuck on one thing - when I went to create the second md device with > mdadm, > > # mdadm --create /dev/md1 --level=1 --raid-devices=2 /dev/hdb2 missing > mdadm: error opening /dev/md1: No such file or directory > > And indeed, ls /dev/md* shows only md0, which worked fine. > > I do have the 'raid1' kernel module loaded. > > What am I missing? Do I need to create the nodes manually now? Add --auto=yes to the create command to add the device node. Udev based systems don't have the nodes created ahead of time. -- Les Mikesell lesmikesell at gmail.com
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