[Users] custom nfs mount options

[Alexandru Vladulescu]

Hi guys,

I remember asking the same thing a couple of weeks ago. Itamar answered 
to be the same, should check the vdsm.conf file for nfs mount options. 
Because I did not had the time to do test this until now, I return with 
the test results.

Well Alex it seems to be right, on the 3.1 version, if you go and edit 
the /etc/vdsm/vdsm.conf file, on line 146, I uncommented the 
nfs_mount_options parameter and changed it to :

nfs_mount_options = soft,nosharecache,noatime,rsize=8192,wsize=8192

Went in Ovirt interface, put the node from Hosts tab into Maintenance, 
so that the ISO domain and Master Domain will get unmounted 
automatically; restarted the vdsm service on the hypervisior server and 
activate the node back from GUI. Upon mount command, there is no change 
or difference between what I have added and what was configured 
automatically before.

  type nfs 
(rw,soft,nosharecache,timeo=10,retrans=6,vers=4,addr=x.x.x.x,clientaddr=x.x.x.x)

Might this be a bug on vdsm to be fixed ?

Alex.


On 01/24/2013 01:45 PM, Alex Leonhardt wrote:
> So I've tried some bits Itamar asked me to - however, still get the 
> same mount options shown.
>
> I tried "service vdsmd reconfigure; service vdsmd restart" - the mount 
> for HV03:/vmfs/data should now have the new mount options, but no luck.
>
> Anyone time to help ?
>
> Alex
>
>
>
> On 24 January 2013 10:54, Alex Leonhardt <alex.tuxx at gmail.com 
> <mailto:alex.tuxx at gmail.com>> wrote:
>
>     I've got now :
>
>     nfs_mount_options = soft,nosharecache,rsize=32768,wsize=32768,noatime
>
>
>     However, when I check the mounts on the host, it does not show
>     these addtitional options used ? (only soft,nosharecache), here
>     the mount output:
>
>     HV02:/vmfs/data.old2 on /rhev/data-center/mnt/HV02:_vmfs_data.old2
>     type nfs
>     (rw,soft,nosharecache,timeo=600,retrans=6,nfsvers=3,addr=x.x.x8)
>     HV02:/vmfs/data on /rhev/data-center/mnt/HV02:_vmfs_data type nfs
>     (rw,soft,nosharecache,timeo=600,retrans=6,vers=3,addr=x.x.x8)
>     HV03:/vmfs/data on /rhev/data-center/mnt/HV03:_vmfs_data type nfs
>     (rw,soft,nosharecache,timeo=600,retrans=6,nfsvers=3,addr=127.0.0.1)
>
>     Above is after I restarted HV03 so it really should have mounted
>     HV03:/vmfs/data with the new options
>
>     another question would be if "nolock" would be a good idea as it
>     seems that nfs ops are sometimes being blocked by a lock ? at
>     least, it behaves as if .. i havent further investigated yet.
>
>     Alex
>
>
>
>
>
>     On 23 January 2013 13:27, Itamar Heim <iheim at redhat.com
>     <mailto:iheim at redhat.com>> wrote:
>
>         On 22/01/2013 11:43, Haim Ateya wrote:
>
>             you can set it manually on each hypervisor by using vdsm.conf.
>
>             add the following into /etc/vdsm/vdsm.conf
>
>             [irs]
>             nfs_mount_options = soft,nosharecache
>
>             restart vdsmd service on the end.
>
>
>         you can also set them via a posixfs storage domain, but for
>         nfs, an nfs storage domain is recommended over a posixfs one.
>         question is what is the use case for them, and should they be
>         added for nfs domains as well.
>
>
>
>             ----- Original Message -----
>
>                 From: "Alex Leonhardt" <alex.tuxx at gmail.com
>                 <mailto:alex.tuxx at gmail.com>>
>                 To: "oVirt Mailing List" <users at ovirt.org
>                 <mailto:users at ovirt.org>>
>                 Sent: Tuesday, January 22, 2013 1:46:56 AM
>                 Subject: [Users] custom nfs mount options
>
>
>
>
>
>                 Hi,
>
>                 Is it possible set custom nfs mount options,
>                 specifically : noatime,
>                 wsize and rsize ? I couldnt see anything when "adding
>                 a NFS domain"
>                 - only timeout & retry.
>
>
>                 Thanks!
>                 Alex
>
>
>
>
>
>                 --
>
>
>
>                 | RHCE | Senior Systems Engineer | www.vcore.co
>                 <http://www.vcore.co> |
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>     | RHCE | Senior Systems Engineer | www.vcore.co
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>
>
>
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-- 
Alexandru Vladulescu
System Engineer
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Bright Future Project Romania
Skype :   avladulescu
Mobile :  +4(0)726.373.098
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