Re: [Users] Recommended way to disconnect and remove iSCSI direct LUNs
Hi Boyan, Generally we don't disconnecting external Lun disks when we remove them from the oVirt management. You can disconnect them manually from the host, or use restart. IIRC one reason for that, is because we might have Storage Domains which use the same target. another reason is that we keep those sessions, so it will be easier to establish connection when reusing the target. Regards, Maor On 02/26/2014 02:41 PM, Boyan Tabakov wrote: Hello, I have ovirt 3.3.2 running with FC19 nodes. I have several virtual machines that use directly attached iSCSI LUNs. Discovering, attaching and using new LUNs works without issues (vdsm needed some patching to work with Dell Equallogic, as described here https://sites.google.com/a/keele.ac.uk/partlycloudy/ovirt, but that's a separate issue). Also live migration works well between hosts and the LUNs get properly attached to the migration target host. However, I don't see any way to disconnect/remove LUNs that are no longer needed (e.g. VM is removed). What is the recommended way to remove old LUNs, so that the underlying iSCSI sessions are disconnected? Especially if a VM has been migrated between hosts, it leaves the LUNs connected on multiple nodes. Thank you in advance! Best regards, Boyan Tabakov ___ Users mailing list Users@ovirt.org http://lists.ovirt.org/mailman/listinfo/users ___ Users mailing list Users@ovirt.org http://lists.ovirt.org/mailman/listinfo/users
Re: [Users] Recommended way to disconnect and remove iSCSI direct LUNs
Hi Maor, Thanks for your explanation! I suppose we'll disconnect manually, if we decide to use direct LUNs instead of Storage domain volumes (some issues with SD volumes, as explained in another mail thread of mine). Best regards, Boyan On Tue Mar 4 14:20:38 2014, Maor Lipchuk wrote: Hi Boyan, Generally we don't disconnecting external Lun disks when we remove them from the oVirt management. You can disconnect them manually from the host, or use restart. IIRC one reason for that, is because we might have Storage Domains which use the same target. another reason is that we keep those sessions, so it will be easier to establish connection when reusing the target. Regards, Maor On 02/26/2014 02:41 PM, Boyan Tabakov wrote: Hello, I have ovirt 3.3.2 running with FC19 nodes. I have several virtual machines that use directly attached iSCSI LUNs. Discovering, attaching and using new LUNs works without issues (vdsm needed some patching to work with Dell Equallogic, as described here https://sites.google.com/a/keele.ac.uk/partlycloudy/ovirt, but that's a separate issue). Also live migration works well between hosts and the LUNs get properly attached to the migration target host. However, I don't see any way to disconnect/remove LUNs that are no longer needed (e.g. VM is removed). What is the recommended way to remove old LUNs, so that the underlying iSCSI sessions are disconnected? Especially if a VM has been migrated between hosts, it leaves the LUNs connected on multiple nodes. Thank you in advance! Best regards, Boyan Tabakov ___ Users mailing list Users@ovirt.org http://lists.ovirt.org/mailman/listinfo/users signature.asc Description: OpenPGP digital signature ___ Users mailing list Users@ovirt.org http://lists.ovirt.org/mailman/listinfo/users
[Users] Recommended way to disconnect and remove iSCSI direct LUNs
Hello, I have ovirt 3.3.2 running with FC19 nodes. I have several virtual machines that use directly attached iSCSI LUNs. Discovering, attaching and using new LUNs works without issues (vdsm needed some patching to work with Dell Equallogic, as described here https://sites.google.com/a/keele.ac.uk/partlycloudy/ovirt, but that's a separate issue). Also live migration works well between hosts and the LUNs get properly attached to the migration target host. However, I don't see any way to disconnect/remove LUNs that are no longer needed (e.g. VM is removed). What is the recommended way to remove old LUNs, so that the underlying iSCSI sessions are disconnected? Especially if a VM has been migrated between hosts, it leaves the LUNs connected on multiple nodes. Thank you in advance! Best regards, Boyan Tabakov signature.asc Description: OpenPGP digital signature ___ Users mailing list Users@ovirt.org http://lists.ovirt.org/mailman/listinfo/users
