[Users] custom nfs mount options

Thu Jan 24 12:33:44 UTC 2013

On 01/24/2013 02:25 PM, Itamar Heim wrote:
> On 24/01/2013 04:24, Alexandru Vladulescu wrote:
>>
>> 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.
>
> I remember something about you must not pass any nfs option from 
> ovirt, or it will override the vdsm.conf.
> are you trying to set nfs options from both engine and vdsm.conf?
Basically, I had 2 questions, one was like Alex asked and it is in the 
current topic, and the other was suggestion to add these nfs 
configuration parameters changes into the GUI in Storage tab. I asked if 
besides the retrans, timeo and vers is it possible to add anything else 
in the future GUI devel.

Must mention, I test on 3.1 version from dreyou's repo.
>
>>
>>   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> |
>>>                 | www.vsearchcloud.com <http://www.vsearchcloud.com> |
>>>
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>>>
>>>
>>>
>>>
>>>     --
>>>
>>>     | RHCE | Senior Systems Engineer | www.vcore.co
>>>     <http://www.vcore.co> | www.vsearchcloud.com
>>>     <http://www.vsearchcloud.com> |
>>>
>>>
>>>
>>>
>>> -- 
>>>
>>> | RHCE | Senior Systems Engineer | www.vcore.co <http://www.vcore.co>
>>> | www.vsearchcloud.com <http://www.vsearchcloud.com> |
>>>
>>>
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>>
>>
>> -- 
>> Alexandru Vladulescu
>> System Engineer
>> --------------------------------------------------------------------------------- 
>>
>> Bright Future Project Romania
>> Skype :   avladulescu
>> Mobile :  +4(0)726.373.098
>> --------------------------------------------------------------------------------- 
>>
>>
>


-- 
Alexandru Vladulescu
System Engineer
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Bright Future Project Romania
Skype :   avladulescu
Mobile :  +4(0)726.373.098
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