That's mainly what I use "chmount" for. I put non-IBM products in the /opt subdirectory. As distributed by IBM, /opt is a symlink to $VERSION/opt. But I didn't like that. There were a few distributed symlinks in this $VERSION subdirectory. I made a new filesystem and temporarily mounted it elsewhere. I then recreated the /opt symlinks in my new filesystem. Then I rm'ed the /opt symlink in the sysplex root and did a mkdir for it. I now have an independent filesystem mounted at /opt. This filesystem is mounted RW. But all that is in it are those symlinks and a bunch of subdirectories which I use as mountpoints for separate filesystems. Said filesystems are usually mounted READ, but a few are actually written to by the vendor products. If I could, I would put the RDWR filesystems under /var/&VENDOR, but that is not alwasy possible. In general, my /opt looks like:
/opt is a filesystem, mainly mountpoints, RW /opt/vendor-id is a filesystem, mainly mountpoints, READ /opt/vendor-id/product is a filesystem for the vendor product, READ or RW as needed. I wish that I could "echo" the above in the /var for RW, but that is to difficult because vendors don't do it that way. -- John McKown Systems Engineer IV IT Administrative Services Group HealthMarkets® 9151 Boulevard 26 • N. Richland Hills • TX 76010 (817) 255-3225 phone • [email protected] • www.HealthMarkets.com Confidentiality Notice: This e-mail message may contain confidential or proprietary information. If you are not the intended recipient, please contact the sender by reply e-mail and destroy all copies of the original message. HealthMarkets® is the brand name for products underwritten and issued by the insurance subsidiaries of HealthMarkets, Inc. –The Chesapeake Life Insurance Company®, Mid-West National Life Insurance Company of TennesseeSM and The MEGA Life and Health Insurance Company.SM > -----Original Message----- > From: IBM Mainframe Discussion List > [mailto:[email protected]] On Behalf Of ??? ?? ??? > Sent: Thursday, December 29, 2011 8:09 AM > To: [email protected] > Subject: Re: z/OS 1.13 - Can the root file system be shared > as read/write? > > Thanks everyone. > I didn't know about the chmount command. > > My main problem was always creating a mount point for product > specific file systems. Having a way to make the root file > system Read/Write temporarily, is the best solution. > > Gadi > > -----Original Message----- > From: IBM Mainframe Discussion List > [mailto:[email protected]] On Behalf Of Mark Zelden > Sent: Thursday, December 29, 2011 3:55 PM > To: [email protected] > Subject: Re: z/OS 1.13 - Can the root file system be shared > as read/write? > > On Thu, 29 Dec 2011 15:07:25 +0200, גדי > בן אבי <[email protected]> wrote: > > >Hi, > > > >We are in the process of installing z/OS 1.13. > > > >The migration guide has a section about sharing zfs file > systems, but I’m still not clear on this issue. > > > >So, can the root file system be shared as read/write? > > > >Thanks > > > >Gadi > > > > Any file system can be shared read/write if you want in a > shared file system environment. > If you are not in a shared file system environment (you don't > have SYSPLEX(YES) in your BPXPRMxx) then you can't share > anything other than READ only. > > However, whether in a shared file system environment or not, > why would you want > the z/OS root mounted anything but read only? It's an > accident waiting to happen > if you do. z/OS already gives you a way to dynamically > activate maintenance when you can and it doesn't involve > writing to the IPLed z/OS unix root. > > Regards, > > Mark > -- > Mark Zelden - Zelden Consulting Services - z/OS, OS/390 and MVS > mailto:[email protected] > Mark's MVS Utilities: http://www.mzelden.com/mvsutil.html > Systems Programming expert at > http://expertanswercenter.techtarget.com/ > > ---------------------------------------------------------------------- > For IBM-MAIN subscribe / signoff / archive access > instructions, send email to [email protected] with the > message: INFO IBM-MAIN > > לשימת לבך, בהתאם לנהלי החברה וזכויות החתימה בה, כל הצעה, > התחייבות או מצג מטעם החברה, מחייבים מסמך נפרד וחתום על ידי > מורשי החתימה של החברה, הנושא את לוגו החברה או שמה המודפס > ובצירוף חותמת החברה. בהעדר מסמך כאמור (לרבות מסמך סרוק) > המצורף להודעת דואר אלקטרוני זאת, אין לראות באמור בהודעה אלא > משום טיוטה לדיון, > ואין להסתמך עליה לביצוע פעולה עסקית או משפטית כלשהי. > > > Please note that in accordance with Malam's signatory rights, > no offer, agreement, concession or representation is binding > on the company, > unless accompanied by a duly signed separate document (or a > scanned version thereof), affixed with the company's seal. > > ---------------------------------------------------------------------- > For IBM-MAIN subscribe / signoff / archive access instructions, > send email to [email protected] with the message: INFO IBM-MAIN > > ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO IBM-MAIN
