IBM System Storage Ideas Portal


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Storage Scale (formerly known as GPFS)

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mmbackup does not handle EXCLUDE.DIR rules preferentially over EXCLUDE rules

The TSM BA client dsmc by default includes everything in the backup domain (defaults to all local filesystems), optionally allowing one to exclude paths and even re-include paths that would by excluded by previous rules. There are two mechanisms f...
almost 5 years ago in Storage Scale (formerly known as GPFS) 2 Delivered

Add an ILM policy attribute to indicate if file data is stored in the metadata inode

The ILM is a fantastic powerful tool where it is possible to search or query for items in the file system such as empty directories, attached ACLs, extended attributes etc but there is no easy definitive way of querying if a data file resides in t...
over 6 years ago in Storage Scale (formerly known as GPFS) 3 Delivered

Setting the Spectrum Scale license designation in the mmaddnode command (JUMP)

We currently have a hack in our system automation facilities for a node to set the Spectrum Scale License Designation. This can be problematic when multiple nodes attempt to change their License Designation at the same time. We would prefer GPFS t...
over 7 years ago in Storage Scale (formerly known as GPFS) 2 Delivered

Add afmRefreshOnce and afmReaddirOnce parameters to ISS REST API fileset endpoints

With ISS 5.0.5"Data migration by using AFM migration enhancements" was introduced. And with it two new fileset parameters afmRefreshOnce and afmReaddirOnce. In 5.1 you introduced these parameters in the REST API GET fileset calls but not in the PO...
about 3 years ago in Storage Scale (formerly known as GPFS) 1 Delivered

fix mmdiag --stat -Y indistinguishable entries

mmdiag offers -Y for machine-readable output. Unfortunately parsing that output is difficult because there are multiple lines that have an identical identification string. So you really cannot deduce what value you are seeing. The only way to sure...
over 4 years ago in Storage Scale (formerly known as GPFS) 3 Delivered

Unexpected Very High bandwidth utilization with large block size (16M) on GPFS File system

Unexpected Very High bandwidth utilization with large block size (16M) on File system . When I look at the performance graph , bandwidth used is in 30-50 GBps when user runs a app/job against 16MB block size file system. When same app/job is run a...
almost 5 years ago in Storage Scale (formerly known as GPFS) 5 Delivered

Spectrum Scale (ESS) AFM-DR Role Reversal Performance Enhancement

AFM (or AFM DR) uses the file handles (FH) for the replication. FH uniquely identifies the target path (DR) for the local file (primary). For NFS , NFSv3 file handle which is stored in the inode. NFSv3 FH can be directly used for the IO. When the ...
almost 5 years ago in Storage Scale (formerly known as GPFS) 2 Delivered

Metadata Slowness when list files in Spectrum Scale snapshot of an independent fileset with many dependent filesets. (fileset scaling)

Please refer to IBM Support Case ID: TS002244951 Listing of files in a Snapshot with 961 filesets takes about 3 min for the first time. The subseqent runs of ls -ltr command run much faster. In this case /ace/home is independent fileset with 961 d...
about 5 years ago in Storage Scale (formerly known as GPFS) 4 Delivered

Improve memory-mapped file performance

Memory-mapped files (mmaps) provide a flexible way to handle larger-than memory data. However, reading and writing speed of mmaps on a GPFS file system is worse than using single disk or network-mounted filesystems. It would be great if this could...
over 5 years ago in Storage Scale (formerly known as GPFS) 3 Delivered

Add callback for hard quota limit reached.

It would be useful to have a callback option for when hard quota limits where reached. While softQuotaExceeded and usageUnderSoftQuota are very useful, we would like to have an option to register a call back to be notified if a USR, GRP, or FILESE...
almost 6 years ago in Storage Scale (formerly known as GPFS) 2 Delivered

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