Is it possible to configure the MDT as ldiskfs and the OSTs with zfs
in lustre 2.4? The server is running a lustre kernel on a Centos 6.4
system, has both lustre-osd-ldiskfs and lustre-osd-zfs rpms installed.
The MDT is up as ldiskfs, but get an error trying to configure the ost:
mkfs.lustre
In theory this should be possible, but we have not tested this for a long time
since it isn't a configuration that is common.
Note that you need to configure the OST on a separate node from the MDT in this
case. We have not implemented the ability to have multiple OSD types on the
same node.
On 2013/09/19 11:39 PM, Arman Khalatyan arm2...@gmail.com wrote:
Hello,
We are removing one ost from the lustre 2.4.1.
Only few files are written on that OST without any striping.
First we dectivate on MDS
lctl --device 15 deactivate
then on client:
lfs_migrate -y
On 10/7/13 11:23 AM, Anjana Kar wrote:
Here is the exact command used to create a raidz2 pool with 8+2 drives,
followed by the error messages:
mkfs.lustre --fsname=cajalfs --reformat --ost --backfstype=zfs --index=0
--mgsnode=10.10.101.171@o2ib lustre-ost0/ost0 raidz2 /dev/sda /dev/sdc
Ned
Here is the exact command used to create a raidz2 pool with 8+2 drives,
followed by the error messages:
mkfs.lustre --fsname=cajalfs --reformat --ost --backfstype=zfs --index=0
--mgsnode=10.10.101.171@o2ib lustre-ost0/ost0 raidz2 /dev/sda /dev/sdc
/dev/sde /dev/sdg /dev/sdi /dev/sdk
On Mon, Oct 07, 2013 at 02:23:32PM -0400, Anjana Kar wrote:
Here is the exact command used to create a raidz2 pool with 8+2 drives,
followed by the error messages:
mkfs.lustre --fsname=cajalfs --reformat --ost --backfstype=zfs
--index=0 --mgsnode=10.10.101.171@o2ib lustre-ost0/ost0 raidz2
On 10/07/2013 04:27 PM, Ned Bass wrote:
On Mon, Oct 07, 2013 at 02:23:32PM -0400, Anjana Kar wrote:
Here is the exact command used to create a raidz2 pool with 8+2 drives,
followed by the error messages:
mkfs.lustre --fsname=cajalfs --reformat --ost --backfstype=zfs
--index=0
I'm guessing your git checkout doesn't include this commit:
* 010a78e Revert LU-3682 tunefs: prevent tunefs running on a mounted device
It looks like the LU-3682 patch introduced a bug that could cause your issue,
so its reverted in the latest master.
Ned
On Mon, Oct 07, 2013 at 04:54:13PM
