Chmount only works in a single system environment.   WE share those
filesystems READ only among several systems, and this would fail.

_________________________________________________________________
Dave Jousma
Assistant Vice President, Mainframe Services
[email protected]
1830 East Paris, Grand Rapids, MI  49546 MD RSCB2H
p 616.653.8429
f 616.653.2717


-----Original Message-----
From: IBM Mainframe Discussion List [mailto:[email protected]] On
Behalf Of McKown, John
Sent: Thursday, December 29, 2011 8:54 AM
To: [email protected]
Subject: Re: z/OS 1.13 - Can the root file system be shared as
read/write?

> -----Original Message-----
> From: IBM Mainframe Discussion List 
> [mailto:[email protected]] On Behalf Of Jousma, David
> Sent: Thursday, December 29, 2011 7:27 AM
> To: [email protected]
> Subject: Re: z/OS 1.13 - Can the root file system be shared 
> as read/write?
> 
> Cant specifically answer your question.   But in general, I 
> don't like mounting any of the z/OS product ZFS file systems 
> read/write because "junk" tends to collect in them whether by 
> accident or on purpose.   We are not doing sysplex sharing, 
> but do mount them all READ only.
> 
> _________________________________________________________________
> Dave Jousma

That's my plan too. I mount all my "root" filesystems (SYSPLEX, VERSION,
& SYSTEM) as READ, along with the "product" filesystems as well. If I
really need to do an update, I use a UNIX shell and "cd" to the proper
subdirectory. Then do a "chmount -w .". Update the filesystem (update a
file or rmdir or mkdir, whatever). Then "chmount -r ." again. My
.profile adds /usr/sbin to my PATH, which makes using chmount easier.

--
John McKown 
Systems Engineer IV
IT

Administrative Services Group

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