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?
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
Iface Name: ieth0
Iface Name: ieth1
- rescan of iSCSI
[root@dbatest ~]# for i in 0 1
> do
> iscsiadm -m node --targetname=iqn.2001-05.com.equallogic:0-8a0906-5a6994505-66f00106af950fed-dbatest-save -I ieth$i --rescan
> done
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