Thanks. This fixed the problem. BTW, after adding this line I still got the same error on my pvcreate but then I ran pvcreate -vvv and found that it was ignorning my /dev/rbd1 device because it had detected a partition signature (which I had added in an earlier attempt to work around this "ignored" issue). I deleted the partion and the pvcreate worked on all my RBD devices. A basic recipe for creating an LVM volume is: for i in 1 2 3 do rbd create user1-home-lvm-p0$i --size 102400 rbd map user1-home-lvm-p0$i pvcreate user1-home-lvm-p0$i done vgcreate user1-home-vg \ /dev/rbd/rbd/user1-home-lvm-p01 \ /dev/rbd/rbd/user1-home-lvm-p02 \ /dev/rbd/rbd/user1-home-lvm-p03 lvcreate -nuser1-home-lv -l%100FREE user1-home-vg mkfs.ext4 /dev/user1-home-vg/user1-home-lv mount /dev/user1-home-vg/user1-home-lv /somewhere ~jpr On 09/24/2013 07:58 PM, Mandell Degerness wrote: > You need to add a line to /etc/lvm/lvm.conf: > > types = [ "rbd", 1024 ] > > It should be in the "devices" section of the file. > > On Tue, Sep 24, 2013 at 5:00 PM, John-Paul Robinson <jpr@xxxxxxx> wrote: >> Hi, >> >> I'm exploring a configuration with multiple Ceph block devices used with >> LVM. The goal is to provide a way to grow and shrink my file systems >> while they are on line. >> >> I've created three block devices: >> >> $ sudo ./ceph-ls | grep home >> jpr-home-lvm-p01: 102400 MB >> jpr-home-lvm-p02: 102400 MB >> jpr-home-lvm-p03: 102400 MB >> >> And have them mapped into my kernel (3.2.0-23-generic #36-Ubuntu SMP): >> >> $ sudo rbd showmapped >> id pool image snap device >> 0 rbd jpr-test-vol01 - /dev/rbd0 >> 1 rbd jpr-home-lvm-p01 - /dev/rbd1 >> 2 rbd jpr-home-lvm-p02 - /dev/rbd2 >> 3 rbd jpr-home-lvm-p03 - /dev/rbd3 >> >> In order to use them with LVM, I need to define them as physical >> volumes. But when I run this command I get an unexpected error: >> >> $ sudo pvcreate /dev/rbd1 >> Device /dev/rbd1 not found (or ignored by filtering). >> >> I am able to use other RBD on this same machine to create file systems >> directly and mount them: >> >> $ df -h /mnt-test >> Filesystem Size Used Avail Use% Mounted on >> /dev/rbd0 50G 885M 47G 2% /mnt-test >> >> Is there a reason that the /dev/rbd[1-2] devices can't be initialized as >> physical volumes in LVM? >> >> Thanks, >> >> ~jpr >> _______________________________________________ >> ceph-users mailing list >> ceph-users@xxxxxxxxxxxxxx >> http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com _______________________________________________ ceph-users mailing list ceph-users@xxxxxxxxxxxxxx http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
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