Hi Bob, > So the most general case I've found is to stick with v3, but make sure > the firewall is properly configured on the storage server (or turn it off).
I configured the firewall on my storage server according to the instructions in [1]. before that, the 'mount' command always failed for me, with/without flags... > NFSv4: requires no firewall configuration (although I thought oVirt > handled this automatically - did you change your firewall config after > host-deploy?) did I change my firewall config on my Host, you mean (i.e. the storage client)? I thought that it didn't matter (i.e. only storage *server* firewall proper configuration is important)? but in any case: after deploying my Host, I haven't touched the firewall on the Host, or on the storage server. Maybe I've configured the NFS export path incorrectly within the "/etc/exports" file on my storage server? This is how it appears now: --- /path/to/export *(rw,sync) --- maybe I am missing some parameter(s) to allow it to work properly with v3? Thanks! ---- Regards, Einav [1] http://www.cyberciti.biz/faq/centos-fedora-rhel-iptables-open-nfs-server-ports/ [some adjustments were needed, e.g. replacing occurrences of 'RH-Firewall-1-INPUT' with 'INPUT', etc.] ----- Original Message ----- > From: "Bob Doolittle" <[email protected]> > To: "Einav Cohen" <[email protected]> > Cc: "users" <[email protected]> > Sent: Wednesday, December 11, 2013 12:18:21 PM > Subject: Re: [Users] add NFS storage domain fails on mount timeout via ovirt > > Be aware that I've also had issues where v4 failed but v3 worked. This > happened when trying to export storage from the non-root partition. v4 > is fussier in that regard although I'm sure it's configurable somehow. > > So the most general case I've found is to stick with v3, but make sure > the firewall is properly configured on the storage server (or turn it off). > > In summary, the advantages (I've found) of each: > > NFSv3: requires no NFS configuration to export storage from non-root > partitions (useful if you might want to upgrade your OS some day, > although oVirt will have to deliver the feature for importing existing > domains simply). > > NFSv4: requires no firewall configuration (although I thought oVirt > handled this automatically - did you change your firewall config after > host-deploy?) > > Good luck, > Bob > > On 12/11/2013 12:02 PM, Einav Cohen wrote: > > Thanks Bob/Joop - checking the "Override Default Options" > > checkbox and selecting "V4" in the "NFS Version" drop-down > > within the "Advanced Parameters" section before hitting "OK" > > in the 'New Domain' dialog did the trick. > > > > ---- > > Regards, > > Einav > > > > ----- Original Message ----- > >> From: "Bob Doolittle" <[email protected]> > >> To: "Joop" <[email protected]> > >> Cc: "users" <[email protected]> > >> Sent: Wednesday, December 11, 2013 11:20:01 AM > >> Subject: Re: [Users] add NFS storage domain fails on mount timeout via > >> ovirt > >> > >> > >> > >> Yes. In my experience when v4 works and v3 does not it's because of > >> firewall > >> issues on the server. > >> > >> -Bob > >> On Dec 11, 2013 11:17 AM, "Joop" < [email protected] > wrote: > >> > >> > >> Einav Cohen wrote: > >> > >> > >> Hi, > >> When trying to add an NFS Export domain via oVirt-engine, it fails on > >> "Problem while trying to mount target". when checking the vdsm.log, it > >> seems > >> that the problem is mount time-out. > >> when I tried to manually run the mount command, in the exact same manner > >> as > >> vdsm, it indeed failed on Connection timed out after ~3 minutes or so: > >> [root@localhost vdsm]# /usr/bin/mount -t nfs -o > >> soft,nosharecache,timeo=600, > >> retrans=6,nfsvers=3 1.2.3.4:/home/ecohen/public/ > >> export/engine/storage/195/ > >> iscsi-dc/export /rhev/data-center/mnt/ 11.2.3. > >> 4:_home_ecohen_public_export_ > >> engine_storage_195_iscsi-dc_ export mount.nfs: Connection timed out > >> but - when trying to run the mount command again, with the exact same > >> mount > >> source and mount target, but without any additional parameter, it > >> succeeded > >> (after ~10 seconds): [root@localhost vdsm]# /usr/bin/mount > >> 10.18.57.137:/home/ecohen/ public/export/engine/storage/ > >> 195/iscsi-dc/export > >> /rhev/data-center/mnt/10.18. 57.137:_home_ecohen_public_ > >> export_engine_storage_195_ iscsi-dc_export > >> > >> My guesss its NFSv3 vs NFSv4 > >> > >> Joop > >> > >> ______________________________ _________________ > >> Users mailing list > >> [email protected] > >> http://lists.ovirt.org/ mailman/listinfo/users > >> > >> _______________________________________________ > >> Users mailing list > >> [email protected] > >> http://lists.ovirt.org/mailman/listinfo/users > >> > > _______________________________________________ Users mailing list [email protected] http://lists.ovirt.org/mailman/listinfo/users
