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Status Delivered
Created by Guest
Created on Dec 8, 2014
Merged idea
This idea has been merged into another idea. To comment or vote on this idea, please visit SCSI-I-193 lack of scsi unmap primitive.

Support for ext4 discard mount option Merged

Hello developers,
I have banks customers with linux servers which need to implement space reclamation on storage. Actually Storwize implement it only via volume copy, which is totally unusable solution, because it is write while voluem. First part via sfill command and second via volume copy. I see that you planning VAAI Unamp. Very nice is also implement discard option supported by linux etc4 FS.
Link is:
https://access.redhat.com/documentation/en-US/Red_Hat_Enterprise_Linux/6/html-single/Storage_Administration_Guide/#idm69426768

Idea priority Medium
  • Guest
    Reply
    |
    Jun 12, 2015

    Due to processing by IBM, this request was reassigned to have the following updated attributes:
    Brand - Servers and Systems Software
    Product family - Storage
    Product - IBM Storwize V7000, V5000 and V3000

    For recording keeping, the previous attributes were:
    Brand - Tivoli
    Product family - Storage
    Product - IBM Storwize V7000, V5000 and V3000

  • Guest
    Reply
    |
    Mar 4, 2015

    This duplicates with the SCSI unmap request which we are already looking at, as the filesystem ext4 would have to be implementing its discard function by using the SCSI unmap command.