Well, I'm not z/OS Unix guru, but it seems pretty easy to me.
First - mounted filesystems can be listed using several methods
including SDSF, MVS command, ish pull down menu, BPXPRMFS member.
Second - automount.
Third - "dummy, lost, forgotten" HFS, that means the dataset exists, but
it is not mounted or listed. It is not hard to list such datasets
residing on DASD. Things are more complex when it is on ML2 or backed up
and deleted or just dumped using DSS to some sequential dataset. However
this is the same case as with ISAM datasets. Maybe someone still has
some ISAM datasets in his dump file?
IMHO more important is to have a procedure/process/project to convert
HFS to ZFS. Some filesystems can be unmounted with no harm to
production, but some cannot.
--
Radoslaw Skorupka
Lodz, Poland
W dniu 07.10.2021 o 09:25, Colin Paice pisze:
I think the question came up from someone who had not had to administer
ZFS/HFS before. It was one of these "where do I start" questions. Of
course once you are familiar with an area it gets easier.
Colin
On Wed, 6 Oct 2021 at 22:04, Radoslaw Skorupka <[email protected]>
wrote:
W dniu 06.10.2021 o 16:44, Ed Jaffe pisze:
On 10/6/2021 7:11 AM, Pommier, Rex wrote:
z/OS 2.4 is the last release of the operating system to support the
HFS (Hierarchical File System) data structure used by the z/OS UNIX
environment. IBM has provided equivalent if not superior
functionality with the z/OS File System (zFS). Customers should
migrate from HFS to zFS using the utilities provided in the operating
system to convert their entire file system hierarchy.
I always intended to ask how customers can identify all of their HFS
data sets. Is it something in ISMF?
Maybe my English is poor, but I don't understand the question.
What's hard in identifying HFS datasets?
1. BPXPRMFS show all mounted filesystems. Just a list to check.
2. AUTOmount is rather easy to check.
3. Last, but not least there are tools like IDCAMS DCOLLECT and LISTDSI.
4. Other cases would live in backup/ML form or just as loosely idea.
What am I missing?
--
Radoslaw Skorupka
Lodz, Poland
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