[ovirt-users] Resize iSCSI lun f storage domain

Hello, my iSCSI storage domain in 4.1.1 is composed by 1 lun of size 1TB and there are two hosts accessing it. I have to extend this LUN to 4Tb. What is supposed to be done after having completed the resize operation at storage array level? I read here the workflow: http://www.ovirt.org/develop/release-management/features/storage/lun-resize/ Does this imply that I have to do nothing at host side? Normally inside a physical server connecting to iSCSI volumes I run the command "iscsiadm .... --rescan" and this one below is all my workflow (on CentOS 5.9, quite similar in CentOS 6.x, except the multipath refresh). Is it oVirt itself that takes in charge the iscsiadm --rescan command? BTW: the "edit domain" screenshot should become a "manage domain" screenshot now Thanks, Gianluca I want to extend my filesystem from 250Gb to 600Gb - current layout of FS, PV, multipath device [g.cecchi@dbatest ~]$ df -h Filesystem Size Used Avail Use% Mounted on ... /dev/mapper/VG_ORASAVE-LV_ORASAVE 247G 66G 178G 28% /orasave [root@dbatest ~]# pvs /dev/mpath/mpsave PV VG Fmt Attr PSize PFree /dev/mpath/mpsave VG_ORASAVE lvm2 a-- 250.00G 0 [root@dbatest ~]# multipath -l mpsave mpsave (36090a0585094695aed0f95af0601f066) dm-4 EQLOGIC,100E-00 [size=250G][features=1 queue_if_no_path][hwhandler=0][rw] \_ round-robin 0 [prio=0][active] \_ 12:0:0:0 sdc 8:32 [active][undef] \_ 11:0:0:0 sdd 8:48 [active][undef] - current configured iSCSI ifaces (ieth0 using eth0 and ieth1 using eth1) [root@dbatest ~]# iscsiadm -m node -P 1 ... Target: iqn.2001-05.com.equallogic:0-8a0906-5a6994505-66f00106af950fed-dbatest-save Portal: 10.10.100.20:3260,1 Iface Name: ieth0 Iface Name: ieth1 - rescan of iSCSI [root@dbatest ~]# for i in 0 1 --targetname=iqn.2001-05.com.equallogic:0-8a0906-5a6994505-66f00106af950fed-dbatest-save -I ieth$i --rescan Rescanning session [sid: 3, target: iqn.2001-05.com.equallogic:0-8a0906-5a6994505-66f00106af950fed-dbatest-save, portal: 10.10.100.20,3260] Rescanning session [sid: 4, target: iqn.2001-05.com.equallogic:0-8a0906-5a6994505-66f00106af950fed-dbatest-save, portal: 10.10.100.20,3260] In messages I get: Apr 24 16:07:17 dbatest kernel: SCSI device sdd: 1258291200 512-byte hdwr sectors (644245 MB) Apr 24 16:07:17 dbatest kernel: sdd: Write Protect is off Apr 24 16:07:17 dbatest kernel: SCSI device sdd: drive cache: write through Apr 24 16:07:17 dbatest kernel: sdd: detected capacity change from 268440698880 to 644245094400 Apr 24 16:07:17 dbatest kernel: SCSI device sdc: 1258291200 512-byte hdwr sectors (644245 MB) Apr 24 16:07:17 dbatest kernel: sdc: Write Protect is off Apr 24 16:07:17 dbatest kernel: SCSI device sdc: drive cache: write through Apr 24 16:07:17 dbatest kernel: sdc: detected capacity change from 268440698880 to 644245094400 - Dry run of multupath refresh [root@dbatest ~]# multipath -v2 -d : mpsave (36090a0585094695aed0f95af0601f066) EQLOGIC,100E-00 [size=600G][features=1 queue_if_no_path][hwhandler=0][n/a] \_ round-robin 0 [prio=1][undef] \_ 12:0:0:0 sdc 8:32 [active][ready] \_ 11:0:0:0 sdd 8:48 [active][ready] - execute the refresh of multipath [root@dbatest ~]# multipath -v2 : mpsave (36090a0585094695aed0f95af0601f066) EQLOGIC,100E-00 [size=600G][features=1 queue_if_no_path][hwhandler=0][n/a] \_ round-robin 0 [prio=1][undef] \_ 12:0:0:0 sdc 8:32 [active][ready] \_ 11:0:0:0 sdd 8:48 [active][ready] - verify new size: [root@dbatest ~]# multipath -l mpsave mpsave (36090a0585094695aed0f95af0601f066) dm-4 EQLOGIC,100E-00 [size=600G][features=1 queue_if_no_path][hwhandler=0][rw] \_ round-robin 0 [prio=0][active] \_ 12:0:0:0 sdc 8:32 [active][undef] \_ 11:0:0:0 sdd 8:48 [active][undef] - pvresize [root@dbatest ~]# pvresize /dev/mapper/mpsave Physical volume "/dev/mpath/mpsave" changed 1 physical volume(s) resized / 0 physical volume(s) not resized - verify the newly added 350Gb size in PV and in VG [root@dbatest ~]# pvs /dev/mpath/mpsave PV VG Fmt Attr PSize PFree /dev/mpath/mpsave VG_ORASAVE lvm2 a-- 600.00G 349.99G [root@dbatest ~]# vgs VG_ORASAVE VG #PV #LV #SN Attr VSize VFree VG_ORASAVE 1 1 0 wz--n- 600.00G 349.99G - lvextend of the existing LV [root@dbatest ~]# lvextend -l+100%FREE /dev/VG_ORASAVE/LV_ORASAVE Extending logical volume LV_ORASAVE to 600.00 GB Logical volume LV_ORASAVE successfully resized [root@dbatest ~]# lvs VG_ORASAVE/LV_ORASAVE LV VG Attr LSize Origin Snap% Move Log Copy% Convert LV_ORASAVE VG_ORASAVE -wi-ao 600.00G - resize FS [root@dbatest ~]# resize2fs /dev/VG_ORASAVE/LV_ORASAVE resize2fs 1.39 (29-May-2006) Filesystem at /dev/VG_ORASAVE/LV_ORASAVE is mounted on /orasave; on-line resizing required Performing an on-line resize of /dev/VG_ORASAVE/LV_ORASAVE to 157285376 (4k) blocks. The filesystem on /dev/VG_ORASAVE/LV_ORASAVE is now 157285376 blocks long. [root@dbatest ~]# df -h /orasave Filesystem Size Used Avail Use% Mounted on /dev/mapper/VG_ORASAVE-LV_ORASAVE 591G 66G 519G 12% /orasave