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Operating Systems Solaris Can I create virtual disk from zpool on Solaris 11.4 for OVM? Post 303045090 by solaris_1977 on Wednesday 11th of March 2020 07:14:44 PM
Old 03-11-2020
Can I create virtual disk from zpool on Solaris 11.4 for OVM?

Hello,

I am here again, with another issue.

I am setting up a new Oracle VM setup (GUI). On the backend, it is ldom concept, but GUI seems to have an easier interface.
For now, we don't have any SFP module and these two S7 Sparc servers are not connected to Storage, so I have to live with local disks only. Now the limitation comes here.
I will create one repository with one local disk and can create VM's from that. That means, VM will be sitting on that repository, which is made of local disk. If ever, I want to replace that local disk (due to hard/transport/bad errors), I will not be able to migrate these VMs to another repository/pool because these VMs are on local disk. This will be a bad design.
Even if I create zpool with two disk, I thought I should be able to see that pool in OVM. But from Oracle VM perspective GUI Manager does not recognize zpools, only disk. I created a case with Oracle for best practice to be used for this and they responded -- "OVM is not designed to manage redundancy with local disks. That is why Oracle VM is capable to handle SAN Storage over the network or even fiber channel. Now from Solaris perspective, I think that you can manually assign zpool as virtual disk to the LDOMs guest, but you need to do research on this if this is possible"

I tried to google and didn't find any relevant note, if I can create virtual disks from zpool.

Another idea came in my mind was, if I can create hardware RAID, then OS will see that single disk, but then I found this link - Hardware RAID Support -
SPARC and Netra SPARC S7-2 Series Servers Administration Guide
and it denies it.

Any suggestions or ideas, please ?

Thanks
 

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vxpfto(1M)																vxpfto(1M)

NAME
vxpfto - set Powerfail Timeout (pfto) SYNOPSIS
vxpfto -g diskgroup -t timeout vxpfto [-g diskgroup] -t timeout volume_list vxpfto [-g diskgroup] -o pftostate={enabled|disabled} vxpfto [-g diskgroup] -o pftostate={enabled|disabled} volume_list DESCRIPTION
Powerfail Timeout is an attribute of a SCSI disk connected to an HP-UX host (see the pfto(7) man page). The vxpfto command sets the Power- fail Timeout interval on a set of Volume Manager disks, either all disks in a disk group, or all disks underlying the volumes listed. The first form of the command sets the same PFTO value for all the disks in the specified VxVM diskgroup. In the second form, all disks underlying the given list of volumes are selected, optionally restricted by the disk group specified with the -g option. If you specify a diskgroup, any volume in the list not belonging to the diskgroup is ignored. Use the -o pftostate option to disable or enable PFTO. By default, PFTO is enabled. You can enable PFTO either on all disks in a disk group, or on all disks underlying the volumes listed. If you invoke vxpfto without arguments, it displays a usage message. OPTIONS
-g diskgroup Specifies the disk group for the operation, either by disk group ID or by disk group name. -o pftostate={enabled|disabled} Enables or disables the use of PFTO for IO. -t timeout Specifies the PFTO value in seconds. The value must be zero or a positive integer. Zero represents the system default PFTO value. The default value depends on the disk driver controlling the disk device. volume_list A list of VxVM volume names. List items must be separated by white-space. EXIT CODES
vxpfto returns a zero if successful. If it encounters an error, vxpfto exits and displays a message on standard error. Defined exit codes are: 0 Success. 1 No PFTO value specified. 2 No diskgroup or volume list specified. 3 Illegal PFTO value specified. EXAMPLES
Set the PFTO value on all disks in disk group testdg to 100 seconds: vxpfto -t 100 -g testdg Set the PFTO value to 50 seconds on all disks underlying volume01 and volume02 in disk group testdg: vxpfto -t 50 -g testdg volume01 volume02 Set the PFTO value to 300 seconds on all disks underlying volume01 and volume02, even though they are not in the same disk group: vxpfto -t 300 volume01 volume02 Disable PFTO on all disks in disk group testdg: vxpfto -g testdg -o pftostate=disabled Enable PFTO on all disks underlying volume01 and volume02i in disk group testdg: vxpfto -g testdg -o pftostate=enabled volume01 volume02 SEE ALSO
vxdisk(1M), pfto(7) VxVM 5.0.31.1 24 Mar 2008 vxpfto(1M)
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