IBM Z Hardware and Operating Systems Ideas Portal


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USS

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USS Kernel to lift MVS Wait restriction when threads need to be accessed by LE

LE CEEDUMPs fail to collect data from paused threads in a multi-threaded environment due to the use of PAUSE/RELEASE and are in an MVS Wait. We're requesting the USS Kernel remove this restriction (similar to APAR OA44116 for KernWait) so threads ...
12 months ago in z/OS / USS 0 Future consideration

Mount point and directory hierarchy verification

Just like the SYNTAXCHECK checks the syntax of BPXPRMxx, I'd like to have the ability to compare whatever there is in the BPXPRMxx in terms of mount and mount points against the root file system. A feature that checks if the mount points exist in ...
about 5 years ago in z/OS / USS 1 Future consideration

DSFS extattr needs version display option

Please add a --version or -version or -v to the extattr command to display the version of the command. This is important as you add more features/options to allow the user to know for sure which version of the command they are using.
about 1 year ago in z/OS / USS 2 Future consideration

BPX SYNTAXCHECK validation of FILESYSTYPE

As part of the work to migrate systems to z/OS 2.5, I believe many customers are converting HFS files to ZFS, and removing the related HFS definitions from BPXPRMxx. Recently we made a mistake of changing the FILESYSTYPE TYPE(HFS) statement to TYP...
over 1 year ago in z/OS / USS 0 Future consideration

Resiliency in a z/OS UNIX shared file system sysplex enivronment

Resiliency in a z/OS UNIX shared file system sysplex enivronment needs to be improved related to the critical mutually exclusive serialized functions (e.g. UNMOUNT, MOVE, MOUNT RESYNC, FILE SYSTEM INITIALIZATION, FILE SYSTEM TAKEOVER, etc.). If on...
5 months ago in z/OS / USS 0 Future consideration

Create command to list a users number of USS processes (in use and highwater!!)

SYSTEM : z/OS Unix System ServicesActor : KBC needs a new feature We have a need to lower our MAXPROCUSER setting to protect system stability. We use USS for many critical business processes. Description : There is no command to list the max used ...
over 3 years ago in z/OS / USS 1 Future consideration

Creating links to independent mount points for CICS, DB2 and applications

The mount points /usr/lpp/db2, /usr/lpp/cics, /usr/lpp/cicsts and /usr/lpp/applicationxxxx should be linked in such a way that became independent from the $VERSION filesystem in case ZOS is in OMVS Sysplex mode. So, I suggest to create the followi...
over 7 years ago in z/OS / USS 1 Future consideration

NOSETUID as a MOUNT default

We are a very large USS environment and in the interest of security would prefer to mount the vast majority of our filesystems using NOSETUID. We have thousands of mounts to maintain. The current mount default of SETUID requires specification of N...
almost 6 years ago in z/OS / USS 1 Future consideration

need way to get id of client of AF_UNIX stream socket

Other Unix-like systems provide a way to determine the user-identification number of the client that connects to a Unix domain socket which is using the SOCK_STREAM protocol to communicate. For example, on IBM AIX systems, the application can use ...
about 3 years ago in z/OS / USS 0 Future consideration

Request for enhancement to BPX1KIL/kill() to provide a specific return code for killing processes in zombie states

For the following scenario:- FOTS3214 cleanup_exit: kill(16777238): EDC5139I Operation not permitted.(errno2=0x0D100114) - Currently this is a unique timing window where the privsep child process is running without it's parent having a SIGCHLD han...
about 7 years ago in z/OS / USS 2 Future consideration

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