[Bug 1830731] Comment bridged from LTC Bugzilla

[bugproxy]

------- Comment From stefan.haberland at de.ibm.com 2019-10-01 09:15 EDT-------
In addition to Jan's update to _not_ enable discard support I would recommend to completely revert the patch:

7e64db1597fe114b83fe17d0ba96c6aa5fca419a s390/dasd: Add discard support
for ESE volumes

to prevent the user from enabling the discard support for DASD devices.
This patch will also be reverted upstream until further clarification.

Regards,
Stefan

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https://bugs.launchpad.net/bugs/1830731

Title:
  [19.10 FEAT] Thin provisioning base support (kernel+390tools)

Status in Ubuntu on IBM z Systems:
  Fix Released
Status in linux package in Ubuntu:
  Fix Released
Status in s390-tools package in Ubuntu:
  Fix Released

Bug description:
  Enable use of thin provisioned ECKD volumes.
  Efficient use of storage resources and reduced deployment time for ECKD volumes .

  Tentative Target is kernel 5.3 + s390tools
  Assumption from crystal balls
  merge window closes on Sunday, 2019-07-28 and release on Sunday, 2019-09-15

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