We are facing an strange issue in our xenserver 6.5 after expanding LUN size on storage,
History -
there are two xenservers in our pool and lenovo 1200s storage LUN is mapped with it, some days ago we were running out of space hence we had expanded space in the LUN but expanded space was not detecting by servers, so in order to get the expanded space detected on the server we tried to detach and attached SR (iscsi over LVM) again but no avail, expanded space was not detected so we tried to reboot the server in the sequence like first master and then slave but after rebooting VM's list is populated in the xencenter but when we try to start any vm which was created on the storage throws the error no boot disk found, also if we navigate the vms storage info it doesn't show vm partition path. but storage is connected properly to the server as we tried to create test vm in the same storage and we were able to create it.
we ran these commands to unplug and plug in storage in the xenserver
1) Shut down all VMs on the SR.
2) # iscsiadm -m node -R
3) xe pbd-unplug uuid=<PBD UUID>
4) xe pbd-plug uuid=<PBD UUID>
5) Restart Hosts
kindly suggest me how to get the vms back from the same storage without data loss as the vms are critical for business.
Iscsi Multipath - unknown key DMP
in Storage
Posted
HI Tobias,
We are facing an strange issue in our xenserver 6.5 after expanding LUN size on storage,
History -
there are two xenservers in our pool and lenovo 1200s storage LUN is mapped with it, some days ago we were running out of space hence we had expanded space in the LUN but expanded space was not detecting by servers, so in order to get the expanded space detected on the server we tried to detach and attached SR (iscsi over LVM) again but no avail, expanded space was not detected so we tried to reboot the server in the sequence like first master and then slave but after rebooting VM's list is populated in the xencenter but when we try to start any vm which was created on the storage throws the error no boot disk found, also if we navigate the vms storage info it doesn't show vm partition path. but storage is connected properly to the server as we tried to create test vm in the same storage and we were able to create it.
we ran these commands to unplug and plug in storage in the xenserver
1) Shut down all VMs on the SR.
2) # iscsiadm -m node -R
3) xe pbd-unplug uuid=<PBD UUID>
4) xe pbd-plug uuid=<PBD UUID>
5) Restart Hosts
kindly suggest me how to get the vms back from the same storage without data loss as the vms are critical for business.
Thanks
Nishant