12-11-2010 11:09 AM
Hi All,
I'm new in Storage foundation and Veritas volume manager,
I need help how to configure Veritas Dynamic Multipathing on VCS 5.1 installed on two node running OS linux 5.3 I have following Disk, I want to enable Veritas to manage two disk disk_1 and disk_2:
[root@NODE1 ~]# vxdmpadm getsubpaths
NAME STATE[A] PATH-TYPE[M] DMPNODENAME ENCLR-NAME CTLR ATTRS
================================================================================
sdb ENABLED(A) - disk_0 disk c1 -
sde ENABLED(A) - disk_0 disk c2 -
sdc ENABLED(A) - disk_1 disk c1 -
sdf ENABLED(A) - disk_1 disk c2 -
sdd ENABLED(A) - disk_2 disk c1 -
sdg ENABLED(A) - disk_2 disk c2 -
sda ENABLED(A) - disk_3 disk c0 -
I want to configure the paths of disk_1 (sdc and sdf) as failover and for disk_2 (sdd and sdg) as failover to get configure like this
NAME STATE[A] PATH-TYPE[M] DMPNODENAME ENCLR-NAME CTLR ATTRS
================================================================================
sdb ENABLED(A) - disk_0 disk c1 -
sde ENABLED(A) - disk_0 disk c2 -
sdc ENABLED(A) - disk_1 disk c1 -
sdf ENABLED - disk_1 disk c2 -
sdd ENABLED(A) - disk_2 disk c1 -
sdg ENABLED - disk_2 disk c2 -
sda ENABLED(A) - disk_3 disk c0 -
so if you have any steps to do this or if there is any articleplease provide.
Regards.
Solved! Go to Solution.
12-11-2010 12:11 PM
Hello,
DMP by default is capable of detecting & configuring the devices.
What I can see above is. you have an active-active array in the background & hence all paths are marked in that fashion..
Is there any deliberate reason why you want to keep them in failover mode ?
Well as said above, DMP will detect on its own the devices & marks it however you can tune the way how IO will flow via DMP paths. You can choose the "iopolicy"
To manage properties/attributes of a single path:
https://sort.symantec.com/public/documents/sf/5.1/linux/html/vxvm_admin/ch04s08s12.htm
To configure IOPolicy (defaults are always recommended)
https://sort.symantec.com/public/documents/sf/5.1/linux/html/vxvm_admin/ch04s08s16.htm
Details on how to Manage DMP can be found here:
https://sort.symantec.com/public/documents/sf/5.1/linux/html/vxvm_admin/ch04.htm
Hope this helps
Gaurav
12-11-2010 12:11 PM
Hello,
DMP by default is capable of detecting & configuring the devices.
What I can see above is. you have an active-active array in the background & hence all paths are marked in that fashion..
Is there any deliberate reason why you want to keep them in failover mode ?
Well as said above, DMP will detect on its own the devices & marks it however you can tune the way how IO will flow via DMP paths. You can choose the "iopolicy"
To manage properties/attributes of a single path:
https://sort.symantec.com/public/documents/sf/5.1/linux/html/vxvm_admin/ch04s08s12.htm
To configure IOPolicy (defaults are always recommended)
https://sort.symantec.com/public/documents/sf/5.1/linux/html/vxvm_admin/ch04s08s16.htm
Details on how to Manage DMP can be found here:
https://sort.symantec.com/public/documents/sf/5.1/linux/html/vxvm_admin/ch04.htm
Hope this helps
Gaurav
12-11-2010 12:44 PM
thank you for your quick response ,, the make reason to make active/passive (failover) as follow:
I install oracle database on this system disk_1 for orcle data files and disk_2 for oracle logs file,, once I enable two paths for same disk I found there is corrupted occured on oracle data file detected by RMAN (online backup) this corrupted occure when I do switch of to onther node of VCS .
when I disconnect one of path (path C2) oracle database file not affect by switch of So that I need to configure one path used on same time.