In the past when I used linear I also had to format it with
//FORMATFS EXEC PGM=IOEAGFMT,REGION=0M,COND=(0,NE,DEFINE),
// PARM=('-aggregate COLIN.ZOPEN.ZFS ')
//* PARM=('-aggregate COLIN.ZOPEN.ZFS -compat')
//SYSPRINT DD SYSOUT=*
//STDOUT DD SYSOUT=*
//STDERR DD SYSOUT=*
Then it would mount
Are you saying the IDCAMS define .. ZFS does the format for you?
Colin
On Fri, 24 Oct 2025 at 17:23, Mark Jacobs <
[email protected]> wrote:
> DEFINE CLUSTER (NAME(A2MJAET.TEST.ZFS) -
>
> CYL(1 1) SHAREOPTIONS(3) LINEAR)
>
> IGD01009I ACSMC02W DATASET HAS BEEN ALLOCATED WITH STD0 MANAGEMENT CLASS
> IGD01009I MSG07 MANAGEMENT CLASS ASSIGNED STD0
> IGD17070I DATA SET A2MJAET.TEST.ZFS
> ALLOCATED SUCCESSFULLY WITH 1 STRIPE(S).
> IGD17172I DATA SET A2MJAET.TEST.ZFS
> IS ELIGIBLE FOR EXTENDED ADDRESSABILITY
> IDC0508I DATA ALLOCATION STATUS FOR VOLUME ITFA1H IS 0\
> IDC0512I NAME GENERATED-(D) A2MJAET.TEST.ZFS.DATA
> IDC0181I STORAGECLASS USED IS S1
> IDC0181I MANAGEMENTCLASS USED IS STD0
> IDC0181I DATACLASS USED IS EAVSAM
>
> IDC0001I FUNCTION COMPLETED, HIGHEST CONDITION CODE WAS 0
>
> IDC0002I IDCAMS PROCESSING COMPLETE. MAXIMUM CONDITION CODE WAS 0
>
> mount filesystem('A2MJAET.TEST.ZFS') mountpoint('/u/A2MJAET/mount')
> type(zfs)
>
> BPXF135E RETURN CODE 00000079, REASON CODE EF016C54. THE MOUNT FAILED FOR
> FILE
>
> SYSTEM A2MJAET.TEST.ZFS.
>
> zFS Mon Oct 28 19:01:32 EDT 2024
>
> Description: The VSAM LDS is not formatted, is not marked as intended for
> zFS,
>
> and cannot be formatted at mount.
>
> Action: Format the VSAM LDS using the zfsadm format command and try the
> mount
>
> again.
>
>
>
> Sent from ProtonMail, Swiss-based encrypted email.
>
> GPG Public Key -
> https://api.protonmail.ch/pks/lookup?op=get&[email protected]
>
>
> On Friday, October 24th, 2025 at 12:13 PM, Jousma, David <
> [email protected]> wrote:
>
> > Mark,
> >
> > This is not true. Just ran this today
> >
> > DEFINE CLUSTER(NAME(OMVSU.TEC1.DB2AAAS.SERVICE) -
> > LINEAR -
> > STORCLAS(SCSYSTEM) -
> > MB(500) SHAREOPTIONS(3,3))
> >
> >
> > _______________________________
> >
> > Dave Jousma
> >
> > Vice President | Director, Technology Engineering
> >
> > Fifth Third Bank | 1830 East Paris Ave, SE | Grand Rapids, MI 49546
> >
> >
> >
> >
> >
> >
> > From: IBM Mainframe Discussion List [email protected] on behalf
> of Mark Jacobs [email protected]
> >
> > Date: Friday, October 24, 2025 at 12:05 PM
> > To: [email protected] [email protected]
> >
> > Subject: Re: Configuring ZFS data sets
> >
> > CAUTION EXTERNAL EMAIL
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> >
> >
> >
> > Using LINEAR won't work. You need to specify ZFS if you use IDCAMS to
> define a zfs file system. Your template JCL is the older/original method of
> defining a ZFS file system. It still works, but IDCAMS IMHO is easier.
> >
> > Mark Jacobs
> >
> > Sent from ProtonMail, Swiss-based encrypted email.
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> >
> >
> > On Friday, October 24th, 2025 at 11:46 AM, Colin Paice
> [email protected] wrote:
> >
> > > I'm about to set up some new ZFS data sets
> > > Is there any guidance on the best way of doing it?
> > > - My DEFINE cluster has LINEAR - but I see there is a ZFS option. Does
> it
> > > really make a difference?
> > > - My template JCL has "-compat" in it. Is this recommended ?
> > > Are there any performance options I should be enabling?
> > > Colin
> > >
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