On Thu, Jun 02, 2011 at 03:45:07PM -0400, kathleen.ho...@emc.com wrote: > Hello, > I'm trying to use mod3 ckds which are already RAID10 protection. (most of the > doc I'm looking at uses fba instead of ckd, so I didn't know if this was a > limitation) > I'm addressing the head device and able to use these devices with no problem > as ext3. I've been reading that cache may remember that it used to be ext3, > so I detached and reattached, but get the same result when trying to mount > after formatting. > > I use the following to make the file system after I've attached, varied > online, formated and partitioned (also tried without the journaling switch). > mke2fs -j -t btrfs /dev/dasdbj1
Quoting the man page for that command: "mke2fs is used to create an ext2, ext3, or ext4 filesystem, [...]" The -t option specifies which of ext2, ext3, and ext4 to create. I'm surprised it did anything at all given a type of "btrfs"... You probably wanted mkfs.btrfs instead: # mkfs.btrfs -d single -m single /dev/dasdbj1 > Then the mount command: > mount -t btrfs /dev/dasdbj1 /home/sdasd/d01 > mount: /dev/dasdbj1: can't read superblock If it created an ext2/3/4 filesystem, I'm not entirely surprised that it can't find a btrfs superblock there. :) Hugo. -- === Hugo Mills: hugo@... carfax.org.uk | darksatanic.net | lug.org.uk === PGP key: 515C238D from wwwkeys.eu.pgp.net or http://www.carfax.org.uk --- We teach people management skills by examining characters in --- Shakespeare. You could look at Claudius's crisis management techniques, for example.
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