[Users] SAN storage expansion

[Giorgio Bersano]

2014-03-18 11:00 GMT+01:00 Liron Aravot <laravot at redhat.com>:
> Hi Giorgio,
> perhaps i missed something - but why don't you want to extend the domain by right click and editing it?
>

Hi Liron,
we are talking about an iSCSI storage domain.
In the edit  dialogue I don't see anything regarding resize or extend.
If I just click OK at this point nothing changes. Maybe it's me that
I'm missing something.

Which action could trigger a pvresize ?

In the meantime I'll try Elad's procedure.


> ----- Original Message -----
>> From: "Giorgio Bersano" <giorgio.bersano at gmail.com>
>> To: "Elad Ben Aharon" <ebenahar at redhat.com>
>> Cc: "users at ovirt.org" <Users at ovirt.org>
>> Sent: Tuesday, March 18, 2014 11:28:14 AM
>> Subject: Re: [Users] SAN storage expansion
>>
>> 2014-03-18 9:15 GMT+01:00 Elad Ben Aharon <ebenahar at redhat.com>:
>> > Hi,
>> >
>> > LUNs size are being updated using the multipath mechanism. In order to
>> > update storage domain size, you'll need to update the physical volume size
>> > using LVM on you hypervisors.
>> >
>> > Please do the following:
>> > 1) Put the storage domain to maintenance
>> > 2) Execute on your hosts:
>> > 'pvresize --setphysicalvolumesize' with the new physical volume size (150G)
>> > 3) Activate the storage domain
>>
>> Thank you Elad,
>> I knew it was required a pvresize command but wanted to be sure that I
>> wasn't disrupting possible storage parameters bookkeeping by the oVirt
>> system.
>> I'm wondering if it's because of this that SD has to be put in maintenance.
>>
>> Any chance to have the SD resize without putting it offline, for
>> example doing pvresize on the SPM node and then pvscan on every other
>> host involved?
>> I'm sure there are use cases where this is would be of great convenience.
>>
>>
>> > ----- Original Message -----
>> > From: "Giorgio Bersano" <giorgio.bersano at gmail.com>
>> > To: "users at ovirt.org" <Users at ovirt.org>
>> > Sent: Monday, March 17, 2014 7:25:36 PM
>> > Subject: [Users] SAN storage expansion
>> >
>> > Hi all,
>> > I'm happily continuing my experiments with oVirt and I need a
>> > suggestion regarding storage management.
>> >
>> > I'm using an iSCSI based Storage Domain and I'm trying to understand
>> > which is the correct way to extend it's size some time after it's
>> > creation.
>> >
>> > Please consider the following steps:
>> >
>> > 1) Using storage specific tools create a new volume on iSCSI storage
>> > (e.g. 130.0 GiB)
>> >
>> > 2) in oVirt webadmin: Storage -> New Domain , select the previously
>> > created storage (130 GB), OK, after some time it's online:
>> >  Size: 129 GB ; Available: 125 GB ; Used: 4 GB
>> >
>> > 3) Use according to your needs (even noop is OK)
>> >
>> > 4) Using storage specific tools expand the new volume (e.g. 20.0 GiB
>> > more, now it says 150.0GiB)
>> >
>> > 5) in webadmin: Storage, click on the domain, Edit. Looking at
>> > Luns>Targets , now it correctly sees 150GB
>> >
>> > BUT
>> > on the Storage tab it continues to be seen with
>> >  Size: 129 GB ; Available: 125 GB ; Used: 4 GB
>> >
>> >
>> > Do you think it is possible to make oVirt aware of the new available
>> > storage space? Am I missing something obvious?
>> >
>> > My setup is oVirt 3.4.0 RC2 with fully patched CentOS 6.5 hosts.
>> >
>> > Best regards,
>> > Giorgio.