On Tue, 27 May 2008 16:08:00 -0500, Mark Zelden <[EMAIL PROTECTED]> wrote:
>On Tue, 27 May 2008 13:58:19 -0700, Edward Jaffe ><[EMAIL PROTECTED]> wrote: > >>Mark Zelden wrote: >>> Except for read only requests (even when mounted R/W). IIRC, those are >>> handled from the local system regardless of the file system owner. >>> >> >>Are you sure about that? I could be wrong, but I thought that all >>requests, when mounted R/W, were function shipped. Is there a manual, >>white paper, or similar reference that describes this processing >>authoritatively? >> > >Well, I did say "IIRC". :-) So I just looked this up in the planning >manual. First a definitions of sysplex aware vs. sysplex unaware: > >"If a PFS allows a file system to be locally accessed on all systems >in a sysplex for a particular mode, then the PFS is sysplex-aware for that >mode. If a PFS requires that a file system be accessed through the >remote owning system from all other systems in a sysplex for a particular >mode, then the PFS is sysplex-unaware for that mode." > > > >And here is the part I remembered that lead to my statement: > > > >" For example, HFS is sysplex-unaware for read-write mode, because all >non-owning systems must access >read-write file systems through the remote owning system. The non-owning >systems are said to be sysplex clients. However, HFS is >sysplex-aware for read-only mode, which means that each system can access >read-only file systems locally, and do not need to contact the >owning system" > > Hit send too early... So it looks like it has to be mounted read only by reading the above. However, I thought I read somewhere else that the system was smart enough to handle a read request locally. Still looking... Mark -- Mark Zelden Sr. Software and Systems Architect - z/OS Team Lead Zurich North America / Farmers Insurance Group - ZFUS G-ITO mailto:[EMAIL PROTECTED] z/OS Systems Programming expert at http://expertanswercenter.techtarget.com/ Mark's MVS Utilities: http://home.flash.net/~mzelden/mvsutil.html ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html
