[lustre-discuss] Still having problems Lustre 2.8 Centos 7.2
p.harvey-smith at warwick.ac.uk
Tue Sep 27 07:12:04 PDT 2016
I'm still having problems trying to setup lustr 2.8 on Centos 7.2. I
think part of the problem is that the documentation at :
http://lustre.org/documentation/ seems to be way out of date, when it
comes to setting up lustre with zfs.
Also chapter 9 of the documentation talks about using lnetctl to setup
the lustre network, this doesn't seem to exist / have been installed.
OK, this is what I have done so far.
Setup two servers, oric and lynx.
oric will be the mgs/mgt server
lynx will be the oss server.
Both now have the correct versions of zfs and the lustre packages installed.
both servers have a zfs pool called testpool.
on the mgs I have tried to create the combined mgs/mdt with :
mkfs.lustre --reformat --fsname=test --mgs --mdt --index=0
That went without hitch, the docs say to try and mount this, however
doing so following the documentation will not allow this to be mounted.
Tom Crowe, suggested that I needed to edit /etc/ldev.conf I have done
that and added the line :
test-mds1 - test-MDT0000 zfs:testpool/mgt_test
typing service lustre start seems not to return any errors, and there's
also nothing in /var/log/messages that seems to indicate failure.
Now on to the oss lynx :
Again zfs / lustre packages installed and testpool setup.
I have tried to make the oss with :
mkfs.lustre --reformat --ost --fsname=test --mgsnode=137.205.xxx.xxx
--index=0 --backfstype=zfs testpool/test_ost
Again it returned without an error :
Permanent disk data:
Lustre FS: test
Mount type: zfs
(OST first_time update )
Persistent mount opts:
Parameters: mgsnode=126.96.36.199 at tcp
mkfs_cmd = zfs create -o canmount=off -o xattr=sa testpool/test_ost
Writing testpool/test_ost properties
lustre:mgsnode=188.8.131.52 at tcp
Again /etc/ldev.conf modified and added :
test test test-OST0000 zfs:testpool/test_ost
This should have completed the setup however I can't mount the
filesystem from a client machine :
mount -t lustre 184.108.40.206 at tcp0:/test /mnt
mount.lustre: mount 220.127.116.11 at tcp0:/test at /mnt failed:
Is the MGS running?
Can anyone help.
Alternately is there a simple walkthrough of setting lustre up with zfs
that I can try to get things going.
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