Several problems with exporting disks have been solved with the fix for 6528156 (opening devices exclusively from vds causes several problems).
There is a still a problem with disks exported through vxdmp, bug 6637560 (disks are not correctly exported with vxdmp). This is problem may impact some other driver (maybe EMC powerpath?), this occurs if a physical disk is exported through a pseudo device. So if the EMC device used for powerpath is a pseudo device when you will certaintly hit 6637560. alex. Octave Orgeron wrote: > Hi, > > There are other issues with VxVM when it comes to LDoms. VxVM relies on the > low level USCSI functions, which is why you can't use it in a guest domain at > this time. However, in build 80 this should be fixed already. Look here: > > http://www.opensolaris.org/os/community/arc/caselog/2007/672/ > > That should enable guest domains to use VxVM. Also, in build 75 the vdisk > driver was updated so that you can virtualize SVM/ZFS/VxVM volumes and use > them as full disks in guest domains. I have a few guest domains running on > ZFS volumes as their boot devices. > > When it comes to multi-pathing, the vendors (EMC, HDS, etc) will have to > update their software so the devices can be virtualized properly. At this > point, if you try to virtualize a power-path device, you end up with nothing > in the guest domain:( > > *-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-* > Octave J. Orgeron > Solaris Systems Engineer > http://www.opensolaris.org/os/community/sysadmin/ > http://unixconsole.blogspot.com > unixconsole at yahoo.com > *-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-* > > ----- Original Message ---- > From: Victor Engle <victor.engle at gmail.com> > To: Brian Glynn <Brian.Glynn at sun.com> > Cc: Octave Orgeron <unixconsole at yahoo.com>; ldoms-discuss at > opensolaris.org > Sent: Tuesday, January 8, 2008 11:56:22 AM > Subject: Re: [ldoms-discuss] Powerpath support in control domain ? > > > I had assumed that the problem with VxVM and LDOMs was in how VxVM DMP > works. When using VxVM, the device virtualization occurs after all the > devices are discovered and device files created. VxVM DMP then > virtualizes the devices into a /dev/vx/dmp... device so then if you > use the /dev/vx device to create volumes and filesystems they are > protected from path failures. > > My assumption was that the /dev/vx devices were not suitable for > virtualizing and exporting to a logical domain. > > I know that some multipathing solutions work in a similar fashion > compared with STMS like SecurePath for example. With SecurePath the > devices in /dev/dsk link to swsp devices in the /devices tree. With > SecurePath the /dev/dsk/cxtxdxsx devices may be used directly just as > with STMS. > >>From Octave's reply it sounds as though it is incorrect to assume that > /dev/dsk/ctd devices will work when they are controlled by none-STMS > multipathing solutions. > > On Jan 8, 2008 12:34 PM, Brian Glynn <Brian.Glynn at sun.com> wrote: >> Thanks for the prompt response Octave, >> >> I don't really care if its supported or not as the target > environment is >> PoC / dev, rather will it work.... >> >> Adios >> >> Brian >> >> Octave Orgeron wrote: >> >> As far as I know at this point, you can only use STMS/MPXIO. > Powerpath, >> HDLM, VxDMP, etc are not supported. >> >> >> *-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-* >> Octave J. Orgeron >> Solaris Systems Engineer >> http://www.opensolaris.org/os/community/sysadmin/ >> http://unixconsole.blogspot.com >> unixconsole at yahoo.com >> *-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-* >> >> >> >> ----- Original Message ---- >> From: Brian Glynn <Brian.Glynn at Sun.COM> >> To: ldoms-discuss at opensolaris.org >> Sent: Tuesday, January 8, 2008 10:25:42 AM >> Subject: [ldoms-discuss] Powerpath support in control domain ? >> >> Hi All, >> >> Have been trawling but yet to get a clear answer... >> >> Can Powerpath devices, visible in the control domain, be used to > support >> vsd devices for guest ldoms ? If so what versions of FW / Powerpath > have >> been seen working and details of any gotcha's would also be > appreciated >> (other than the need for a valid vtoc on the target device). >> >> Proven syntax would be even better :-) >> >> Adios >> >> Brian >> >> >> ________________________________ >> Never miss a thing. Make Yahoo your homepage. >> ________________________________ >> >> _______________________________________________ >> ldoms-discuss mailing list >> ldoms-discuss at opensolaris.org >> http://mail.opensolaris.org/mailman/listinfo/ldoms-discuss >> >> >> _______________________________________________ >> ldoms-discuss mailing list >> ldoms-discuss at opensolaris.org >> http://mail.opensolaris.org/mailman/listinfo/ldoms-discuss >> >> > > > > > > > ____________________________________________________________________________________ > Looking for last minute shopping deals? > Find them fast with Yahoo! Search. > http://tools.search.yahoo.com/newsearch/category.php?category=shopping > _______________________________________________ > ldoms-discuss mailing list > ldoms-discuss at opensolaris.org > http://mail.opensolaris.org/mailman/listinfo/ldoms-discuss
