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Status Not under consideration
Workspace Storage Protect Family
Categories Spectrum Protect (Backup-Archive Client)
Created by Guest
Created on Oct 6, 2020

RELATED IDEAS

new Spectrum Protect Client API to provide "QUERY OCCUPANCY" details + possibly "Q STGPOOL capacity details

Hi,
The SPFS solution is a virtual filesystem that makes it possible to mount Spectrum Protect server storage directly on the server, so that it is possible to protect almost anydata with Spectrum Protect using normal file operations.

SPFS uses Spectrum Protect API calls that are translated from the OS ioctl() calls.
One of these ioctl calls is the statfs() call, which shows details about the filesystem, such as:
- total file system size
- available size in the filesystem
- used size in the filesystem
- nr of inodes (or files) on the filesystem.

These figures are fixed in the SPFS code today, as there are no API function to get these details from the Spectrum Protect server.

For example:
- used size could map to "QUERY OCCUPANCY /filespace"
- total filesystem size could potentially be mapped to "QUERY STG, or a summary of all storage pools"..

Anyhow, some programs checks for available space before executing the program, and if these figures are too small, than these programs will not copy content to the SPFS filesystem.

It would be good if an Client API can be added to at least give as accurate figures as possible.

Idea priority Medium
  • Guest
    Reply
    |     Jul 9, 2021

    IBM has evaluated the request, and has determined that it can not be implemented at this time or does not align with the current multi-year strategy. This request may be resubmitted for consideration after 18 months from the date of submission. The request submitter will automatically be notified by email when the request qualifies for reconsideration and resubmission.

  • Guest
    Reply
    |     Oct 13, 2020

    1. Are you using the REST API served through the Operation Center, SELECT statements through dsmadmc, or is this strictly the traditional TSM API?
    - TSM API

    2. From your description, are you trying to use Q OCCUPANCY as the "used space" and Q STG for the "free space" for your statfs() call OR ...
    - Q OCCUPANCY as the "used space" and Q STG for the "total space" for the statfs()

    3. If the SPFS “filesystem” is essentially mapped to a given Spectrum Protect storage pool, it seems like the pool estimated capacity along with the “percent utilization” would satisfy most of the STATFS behaviors? The utilized is calculated by applying the “percent utilized” to the estimated capacity, this gives both the bytes used in the pool and the bytes free... Even if SPFS maps to an entire SP server, the storage pool information available could be calculated on a per pool basis an

    - for the "total space" it would be good if a summary of all space from the storage pools capacity can be presented. But for the used space, it is better if it is linked to Q OCCUPANCY. Knowing that the stroage pool summary is somewhat not exact, as the storage pools can be a enabled with deduplication and compression such as containers.

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