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Solaris
Missing ASM Disks in Solaris 11.3 LDOM
Post 303025041 by Peasant on Tuesday 23rd of October 2018 10:13:29 AM
10-23-2018
Moderator
Use options slice if you are using slices, as mentioned !
Or use entire device (s2) without options=slice, then partition s0 inside LDOM (or outside) and give it to ASM.
Never give s2 to anything except zpools on VTOC labels.
ZFS when s2 (full scsi lun) or without slice, will repartition disk(s) properly and create zpool (EFI)
When using s2 or no slice at all, ZFS will be endianess aware, you will be able to import the zpool on both solaris architectures (SPARC or x86).
Also, clusters that do SCSI reservation and fencing (like Solaris cluster) will require s2 inside LDOM, or else it will not work.
As for recovering, well, i have no good news about that.
Perhaps some hackery could be done if you had original intact disks without creating zpools out of ASM disk(s)
Why did you do that ... it's like having bad UFS and creating ZFS out of it to recover, it just doesn't make sense
Hackery in a way that you could (from primary domain) :
Present a bit bigger lun, label them, create slice 0 matching the size of entire old lun exactly
Using dd copy entire s2 disk (broken) to s0 slice (new presented and labeled above)
At the end, you would have a labeled disk with s0 slice containing ASM label.
See if ASM now recognizes those luns as proper ones present to LDOM with options=slice
I haven't tried this, get back with results
In my opinion, it is just easier and less prone to error to create from scratch and restore backup and continue with standby DB.
I presume you are replicating with database tools, not storage backend, since if you used storage, you would get properly labeled disks on DR site.
Regards
Peasant.
Or use entire device (s2) without options=slice, then partition s0 inside LDOM (or outside) and give it to ASM.
Never give s2 to anything except zpools on VTOC labels.
ZFS when s2 (full scsi lun) or without slice, will repartition disk(s) properly and create zpool (EFI)
When using s2 or no slice at all, ZFS will be endianess aware, you will be able to import the zpool on both solaris architectures (SPARC or x86).
Also, clusters that do SCSI reservation and fencing (like Solaris cluster) will require s2 inside LDOM, or else it will not work.
As for recovering, well, i have no good news about that.
Perhaps some hackery could be done if you had original intact disks without creating zpools out of ASM disk(s)
Why did you do that ... it's like having bad UFS and creating ZFS out of it to recover, it just doesn't make sense
Hackery in a way that you could (from primary domain) :
Present a bit bigger lun, label them, create slice 0 matching the size of entire old lun exactly
Using dd copy entire s2 disk (broken) to s0 slice (new presented and labeled above)
At the end, you would have a labeled disk with s0 slice containing ASM label.
See if ASM now recognizes those luns as proper ones present to LDOM with options=slice
I haven't tried this, get back with results
In my opinion, it is just easier and less prone to error to create from scratch and restore backup and continue with standby DB.
I presume you are replicating with database tools, not storage backend, since if you used storage, you would get properly labeled disks on DR site.
Regards
Peasant.
This User Gave Thanks to Peasant For This Post:
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LEARN ABOUT SUNOS
install-solaris
install-solaris(1M) install-solaris(1M) NAME
install-solaris - install the Solaris operating system SYNOPSIS
install-solaris install-solaris invokes the Solaris Install program. Depending on graphical capability and available memory at the time of invocation, install-solaris invokes either a text-based installer or a graphical installer. The following minimum requirements for physical memory dictate which features are available during installation: For SPARC machines: 128 MB Minimum physical memory for all installation types 128 MB Minimum physical memory required for windowing system 384 MB Minimum physical memory required for graphical-based installation For x86 machines: 256 MB Minimum physical memory for all installation types 256 MB Minimum physical memory required for windowing system 512 MB Minimum physical memory required for graphical-based installation In some cases, even if the minimum physical memory is present, available virtual memory after system startup can limit the number of fea- tures available. install-solaris exists only on the Solaris installation media (CD or DVD) and should be invoked only from there. Refer to the for more details. install-solaris allows installation of the operating system onto any standalone system. install-solaris loads the software available on the installation media. Refer to the for disk space requirements. Refer to the for more information on the various menus and selections. See attributes(5) for descriptions of the following attributes: +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |Availability |SUNWcdrom (Solaris instal- | | |lation media) | +-----------------------------+-----------------------------+ |Interface Stability |Evolving | +-----------------------------+-----------------------------+ pkginfo(1), install(1M), pkgadd(1M), attributes(5) It is advisable to exit install-solaris by means of the exit options in the install-solaris menus. 23 Sep 2005 install-solaris(1M)