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z/OS File System (zFS)

Showing 12

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

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

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

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 ...
about 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....
about 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

Produce SMF 92 subtype 2 and 4 during backup of ZFS mounted in RWSHARE mode

During the dump process of a ZFS mounted in rw mode, a quiesce is done before the dump and an unquiesce is issued after the dump. SMF 92 subtype 2 is written when the filesytem is quiesced, and a subtype 4 is produced when it is unquiesced. This a...
almost 5 years ago in z/OS / z/OS File System (zFS) 1 Future consideration

zfsadm shrink should provide the ability to mount an unmounted zFS filesystem

zfsadm shrink requires too much manual intervention to be useful. It should provide the ability to mount an unmounted filesystem at a given mountpoint. This would benefit all stoage admins who may also want to release space on unmounted filesystem...
about 2 years ago in z/OS / z/OS File System (zFS) 1 Future consideration

zfsadm shrink should support a wildcard for -aggregate

zfsadm shrink requires too much manual intervention to be useful. Processing only one filesystem is extremely tedious for sites with hundreds or thousands of zFS filesystems. Adding the capability to process multiple zFS's in one command will help...
about 2 years ago in z/OS / z/OS File System (zFS) 1 Future consideration

Take advantage of DAE to suppress dumps

We encountered a situation where the zFS address space was taking 2C3 abends. The abend would sometimes occur more than once a day. DAE was not suppressing the dumps. Coding of the SDUMPX macro should be changed to take advantage of letting DAE su...
over 9 years ago in z/OS / z/OS File System (zFS) 1 Future consideration

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