I had an annoying issue between VxVM and the usage of CLARiiON snaps on a Solaris host. The Solaris host was running VxVM 4.1 (MP something or other). During the troubleshooting we coincidently upgraded our CX array to FLARE 26 which introduced the ALUA functionality. After much troubleshooting and getting nowhere with both EMC and VERITAS, I decided to test the ALUA functionality, primarily because my read of the feature suggested that it MIGHT affect my problem, for the better. Lo and behold my issue with snaps completely disappeared when I enabled ALUA. I discussed this extensively with VERITAS and EMC, but neither was willing to admit that this "solved" my problem. The VERITAS tech told me that regardless of whether it worked or not, they would not "officially" support ALUA until some patch level of VxVM 5.0. I'm not sure if this support has been officially released as we are still running 4.1/MPx. That being said, I have two hosts configured with ALUA, running Solaris 10 and VxVM and I've not had any problems attributable to feature.
________________________________ From: Romeo Theriault [mailto:romeotheria...@gmail.com] Sent: Monday, January 26, 2009 10:12 PM To: firstname.lastname@example.org Subject: [Veritas-vx] ALUA support in vxdmp on Solaris Sparc? Hello, I'm running VxVM 4.1 with vxdmp on a Solaris 9 sparc box. This box is used to connect to a SAN. We will be making a change to the SAN that suggests that the client DMP software uses ALUA (Asymmetric logical unit access) if it is supported. After quite a bit of searching I'm unable to verify if vxdmp in vxvm 4.1 (or any version for that matter) supports ALUA. Does anyone know if it supports it and better yet where I might be able to find some documentation on configuring/using it? r...@melon> pkginfo -l VRTSvxvm PKGINST: VRTSvxvm NAME: VERITAS Volume Manager, Binaries CATEGORY: system ARCH: sparc VERSION: 4.1,REV=02.17.2005.21.28 BASEDIR: / VENDOR: VERITAS Software DESC: Virtual Disk Subsystem PSTAMP: VERITAS-4.1_p3.1:2005-10-24 INSTDATE: Jul 03 2006 14:25 HOTLINE: 800-342-0652 EMAIL: supp...@veritas.com STATUS: completely installed FILES: 827 installed pathnames 26 shared pathnames 18 linked files 98 directories 412 executables 294475 blocks used (approx) Many thanks, -- Romeo Theriault System Administrator Information Technology Services
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