IBM Z Hardware and Operating Systems Ideas Portal


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z/OS File System (zFS)

Showing 20 of 3553

Enhance zfsadm shrink command

Enhance zfsadm shrink command to give the new size not only in K-bytes but also by a percentage value based on the current size. For example a value of 50 to reduce to half the size. This would allow to have an automated process to reduce size of ...
over 2 years ago in z/OS / z/OS File System (zFS) 2 Future consideration

All error messages for shell tools should be complete and NOT require referencing a Messages and Codes manual

Receiving a message like this (example from DSFS dsadm command): IDFS00329E Could not set creation parameters, return code 126 reason code ED07621A. Is confusing and meaningless to the average OMVS shell user. They are not used to finding a messag...
about 1 year ago in z/OS / z/OS File System (zFS) 4 Not under consideration

zFS - Update catalog bits also when filesystem is mounted RO

The zFS attributes from the CATALOG will be updated only when the filesystem is mounted RDWR. Meaning when a cluster is allocated with 'DEFINE CLUSTER LINEAIR' (not with ZFS keyword). And afterwards always mounted RO, the catalog is never updated....
over 1 year ago in z/OS / z/OS File System (zFS) 1 Future consideration

DSFS Utility file system name specification.

DSFS looks for "filename.SYSNAME" allocation of the liniear dataset, even when specifying only "filename" in the BPXPRMxx paramaters. Remove the requirement for "filename.SYSNAME" and use what is specified in BPXPRMxx member (do not add .SYSNAME a...
4 months ago in z/OS / z/OS File System (zFS) 1 Functionality already exists

Forbid a zFS mount of an IDCAMS PATH

When we create an IDCAMS PATH on a zFS, although the IBM documentation says "DON'T DO IT" , it is still allowed. Plus, zFS allows a PATH to be mounted on mountpoint A while you can still mounthe real zFS to mountpoint B, which lead to corrupt our ...
over 1 year ago in z/OS / z/OS File System (zFS) 1 Future consideration

Improve the ISPF performance when listing/accessing a USS directory with a lot of files

The list or access to a USS directory containing a lot of files consumes a huge amount of CPU. The same CPU sonsumption is observed in Java programs accessing the directory
7 months ago in z/OS / z/OS File System (zFS) 2 Not under consideration

Improve DSFS error messages

Receiving a message like this: IDFS00329E Could not set creation parameters, return code 126 reason code ED07621A. Is confusing and meaningless to the average OMVS shell user. They are not used to finding a messages and codes manual ( which is so ...
about 1 year ago in z/OS / z/OS File System (zFS) 1 Not under consideration

zfsadm shrink should provide a means to automatically specify -size without running aggrinfo or calculating from fsinfo

zfsadm shrink requires too much manual intervention to be useful. -size must be taken either from aggrinfo, or calculated from fsinfo, then manually added to the zfsadm shrink command. zfsadm shrink should provide a means to do this automatically ...
over 2 years ago in z/OS / z/OS File System (zFS) 2 Future consideration

zfsadm shrink should provide means to mount R/O filesystem R/W, then switch back to R/O after zfsadm shrink completes

zfsadm shrink requires too much manual intervention to be useful. Forcing a user to manually remount the filesystem R/W, then remount it again as R/O is time-consuming and error prone. zfsadm shrink should provide a means to do this automatically....
over 2 years ago in z/OS / z/OS File System (zFS) 1 Future consideration

zFS Striped restriction

Currently in z/OS zFS does not support the use of a striped VSAM linear data set as a zFS aggregate. StripedVSAM linear data set will only mount as read-only.
over 3 years ago in z/OS / z/OS File System (zFS) 0 Future consideration

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