[Users] iSCSI storage domain.
Hi all, I would like to get some comparison on NFS & iSCSI storage domain . Which one more suitable for a production setup ? I am planning to use LVM backed DRBD replication . And also is that possible to expand iSCSI storage domain by simply resizing backend LVM ? -- *Hans Emmanuel* *NOthing to FEAR but something to FEEL......*
Could any one please give valuable suggestions? On 16-Jan-2014 12:28 PM, "Hans Emmanuel" <hansemmanuel@gmail.com> wrote:
Hi all,
I would like to get some comparison on NFS & iSCSI storage domain . Which one more suitable for a production setup ? I am planning to use LVM backed DRBD replication . And also is that possible to expand iSCSI storage domain by simply resizing backend LVM ?
-- *Hans Emmanuel*
*NOthing to FEAR but something to FEEL......*
Hi, Both storage types are suitable for production setup. As for your second question - manually LVM resizing is not recommended, why not using RHEVM for that? ----- Original Message ----- From: "Hans Emmanuel" <hansemmanuel@gmail.com> To: users@ovirt.org Sent: Thursday, January 16, 2014 3:30:39 PM Subject: Re: [Users] iSCSI storage domain. Could any one please give valuable suggestions? On 16-Jan-2014 12:28 PM, "Hans Emmanuel" < hansemmanuel@gmail.com > wrote: Hi all, I would like to get some comparison on NFS & iSCSI storage domain . Which one more suitable for a production setup ? I am planning to use LVM backed DRBD replication . And also is that possible to expand iSCSI storage domain by simply resizing backend LVM ? -- Hans Emmanuel NOthing to FEAR but something to FEEL...... _______________________________________________ Users mailing list Users@ovirt.org http://lists.ovirt.org/mailman/listinfo/users
Thanks for the reply . Are you suggesting to use Ovirt Engine to resize iSCSI storage domain ? On Thu, Jan 16, 2014 at 7:11 PM, Elad Ben Aharon <ebenahar@redhat.com>wrote:
Hi,
Both storage types are suitable for production setup. As for your second question - manually LVM resizing is not recommended, why not using RHEVM for that?
----- Original Message ----- From: "Hans Emmanuel" <hansemmanuel@gmail.com> To: users@ovirt.org Sent: Thursday, January 16, 2014 3:30:39 PM Subject: Re: [Users] iSCSI storage domain.
Could any one please give valuable suggestions? On 16-Jan-2014 12:28 PM, "Hans Emmanuel" < hansemmanuel@gmail.com > wrote:
Hi all,
I would like to get some comparison on NFS & iSCSI storage domain . Which one more suitable for a production setup ? I am planning to use LVM backed DRBD replication . And also is that possible to expand iSCSI storage domain by simply resizing backend LVM ?
-- Hans Emmanuel
NOthing to FEAR but something to FEEL......
_______________________________________________ Users mailing list Users@ovirt.org http://lists.ovirt.org/mailman/listinfo/users
-- *Hans Emmanuel* *NOthing to FEAR but something to FEEL......*
Indeed, Using ovirt-engine APIs you can edit your iSCSI storage domain and extend it by adding physical volumes from your shared storage (The process is managed by ovirt-engine, the actual actions on your storage are done by your host which has VDSM installed on). ----- Original Message ----- From: "Hans Emmanuel" <hansemmanuel@gmail.com> To: "Elad Ben Aharon" <ebenahar@redhat.com> Cc: users@ovirt.org Sent: Friday, January 17, 2014 6:37:56 AM Subject: Re: [Users] iSCSI storage domain. Thanks for the reply . Are you suggesting to use Ovirt Engine to resize iSCSI storage domain ? On Thu, Jan 16, 2014 at 7:11 PM, Elad Ben Aharon <ebenahar@redhat.com>wrote:
Hi,
Both storage types are suitable for production setup. As for your second question - manually LVM resizing is not recommended, why not using RHEVM for that?
----- Original Message ----- From: "Hans Emmanuel" <hansemmanuel@gmail.com> To: users@ovirt.org Sent: Thursday, January 16, 2014 3:30:39 PM Subject: Re: [Users] iSCSI storage domain.
Could any one please give valuable suggestions? On 16-Jan-2014 12:28 PM, "Hans Emmanuel" < hansemmanuel@gmail.com > wrote:
Hi all,
I would like to get some comparison on NFS & iSCSI storage domain . Which one more suitable for a production setup ? I am planning to use LVM backed DRBD replication . And also is that possible to expand iSCSI storage domain by simply resizing backend LVM ?
-- Hans Emmanuel
NOthing to FEAR but something to FEEL......
_______________________________________________ Users mailing list Users@ovirt.org http://lists.ovirt.org/mailman/listinfo/users
-- *Hans Emmanuel* *NOthing to FEAR but something to FEEL......*
Thanks Elad for explaining . On Fri, Jan 17, 2014 at 2:55 PM, Elad Ben Aharon <ebenahar@redhat.com>wrote:
Indeed, Using ovirt-engine APIs you can edit your iSCSI storage domain and extend it by adding physical volumes from your shared storage (The process is managed by ovirt-engine, the actual actions on your storage are done by your host which has VDSM installed on).
----- Original Message ----- From: "Hans Emmanuel" <hansemmanuel@gmail.com> To: "Elad Ben Aharon" <ebenahar@redhat.com> Cc: users@ovirt.org Sent: Friday, January 17, 2014 6:37:56 AM Subject: Re: [Users] iSCSI storage domain.
Thanks for the reply .
Are you suggesting to use Ovirt Engine to resize iSCSI storage domain ?
On Thu, Jan 16, 2014 at 7:11 PM, Elad Ben Aharon <ebenahar@redhat.com
wrote:
Hi,
Both storage types are suitable for production setup. As for your second question - manually LVM resizing is not recommended, why not using RHEVM for that?
----- Original Message ----- From: "Hans Emmanuel" <hansemmanuel@gmail.com> To: users@ovirt.org Sent: Thursday, January 16, 2014 3:30:39 PM Subject: Re: [Users] iSCSI storage domain.
Could any one please give valuable suggestions? On 16-Jan-2014 12:28 PM, "Hans Emmanuel" < hansemmanuel@gmail.com > wrote:
Hi all,
I would like to get some comparison on NFS & iSCSI storage domain . Which one more suitable for a production setup ? I am planning to use LVM backed DRBD replication . And also is that possible to expand iSCSI storage domain by simply resizing backend LVM ?
-- Hans Emmanuel
NOthing to FEAR but something to FEEL......
_______________________________________________ Users mailing list Users@ovirt.org http://lists.ovirt.org/mailman/listinfo/users
-- *Hans Emmanuel*
*NOthing to FEAR but something to FEEL......*
-- *Hans Emmanuel* *NOthing to FEAR but something to FEEL......*
On Fri, Jan 17, 2014 at 10:25 AM, Elad Ben Aharon wrote:
Indeed, Using ovirt-engine APIs you can edit your iSCSI storage domain and extend it by adding physical volumes from your shared storage (The process is managed by ovirt-engine, the actual actions on your storage are done by your host which has VDSM installed on).
----- Original Message ----- From: "Hans Emmanuel" <hansemmanuel@gmail.com> To: "Elad Ben Aharon" <ebenahar@redhat.com> Cc: users@ovirt.org Sent: Friday, January 17, 2014 6:37:56 AM Subject: Re: [Users] iSCSI storage domain.
Thanks for the reply .
Are you suggesting to use Ovirt Engine to resize iSCSI storage domain ?
On Thu, Jan 16, 2014 at 7:11 PM, Elad Ben Aharon <ebenahar@redhat.com>wrote:
Hi,
Both storage types are suitable for production setup. As for your second question - manually LVM resizing is not recommended, why not using RHEVM for that?
----- Original Message ----- From: "Hans Emmanuel" <hansemmanuel@gmail.com> To: users@ovirt.org Sent: Thursday, January 16, 2014 3:30:39 PM Subject: Re: [Users] iSCSI storage domain.
Could any one please give valuable suggestions? On 16-Jan-2014 12:28 PM, "Hans Emmanuel" < hansemmanuel@gmail.com > wrote:
Hi all,
I would like to get some comparison on NFS & iSCSI storage domain . Which one more suitable for a production setup ? I am planning to use LVM backed DRBD replication . And also is that possible to expand iSCSI storage domain by simply resizing backend LVM ?
-- Hans Emmanuel
I think one option should be to provide the user, if not already present/tested/supported, the opportunity to resize the LUN on storage array and then run a rescan from oVIrt to see the new size and use it without disruption of service. To avoid also LUNs proliferation on storage arrays that in general are providing storage to many sources, also different from oVirt itself Gianluca
On Fri, Jan 17, 2014 at 10:32 AM, Gianluca Cecchi wrote:
I think one option should be to provide the user, if not already present/tested/supported, the opportunity to resize the LUN on storage array and then run a rescan from oVIrt to see the new size and use it without disruption of service. To avoid also LUNs proliferation on storage arrays that in general are providing storage to many sources, also different from oVirt itself Gianluca
So something like this for vSphere: http://kb.vmware.com/selfservice/microsites/search.do?language=en_US&cmd=displayKC&externalId=1017662 Gianluca
On 01/17/2014 11:32 AM, Gianluca Cecchi wrote:
On Fri, Jan 17, 2014 at 10:25 AM, Elad Ben Aharon wrote:
Indeed, Using ovirt-engine APIs you can edit your iSCSI storage domain and extend it by adding physical volumes from your shared storage (The process is managed by ovirt-engine, the actual actions on your storage are done by your host which has VDSM installed on).
----- Original Message ----- From: "Hans Emmanuel" <hansemmanuel@gmail.com> To: "Elad Ben Aharon" <ebenahar@redhat.com> Cc: users@ovirt.org Sent: Friday, January 17, 2014 6:37:56 AM Subject: Re: [Users] iSCSI storage domain.
Thanks for the reply .
Are you suggesting to use Ovirt Engine to resize iSCSI storage domain ?
On Thu, Jan 16, 2014 at 7:11 PM, Elad Ben Aharon <ebenahar@redhat.com>wrote:
Hi,
Both storage types are suitable for production setup. As for your second question - manually LVM resizing is not recommended, why not using RHEVM for that?
----- Original Message ----- From: "Hans Emmanuel" <hansemmanuel@gmail.com> To: users@ovirt.org Sent: Thursday, January 16, 2014 3:30:39 PM Subject: Re: [Users] iSCSI storage domain.
Could any one please give valuable suggestions? On 16-Jan-2014 12:28 PM, "Hans Emmanuel" < hansemmanuel@gmail.com > wrote:
Hi all,
I would like to get some comparison on NFS & iSCSI storage domain . Which one more suitable for a production setup ? I am planning to use LVM backed DRBD replication . And also is that possible to expand iSCSI storage domain by simply resizing backend LVM ?
-- Hans Emmanuel
I think one option should be to provide the user, if not already present/tested/supported, the opportunity to resize the LUN on storage array and then run a rescan from oVIrt to see the new size and use it without disruption of service.
3.4 adds this: Bug 961532 - [RFE] Update storage domain's LUNs sizes in DB after lun resize please note: - you can extend a *storage domain* by adding an extra LUN to it from ovirt-engine. - you *cannot* resize the LUN from ovirt-engine, but you can do that from the storage side, which in 3.4 will be reported by ovirt-engine via bug 961532 and on the general question - what i like about NFS is its way more simple to work with, troubleshoot, inject and recover on issues. also note, on iscsi, LVM has issues on scale once you pass a several hundreds of disks or snapshots (per storage domain).
To avoid also LUNs proliferation on storage arrays that in general are providing storage to many sources, also different from oVirt itself Gianluca _______________________________________________ Users mailing list Users@ovirt.org http://lists.ovirt.org/mailman/listinfo/users
participants (4)
-
Elad Ben Aharon -
Gianluca Cecchi -
Hans Emmanuel -
Itamar Heim