[UBUNTU 20.04] Fix a potential data corruption issue for thin provisioned devices
Bug #1862749 reported by
bugproxy
This bug affects 1 person
Affects | Status | Importance | Assigned to | Milestone | |
---|---|---|---|---|---|
Ubuntu on IBM z Systems |
Fix Released
|
High
|
Frank Heimes | ||
linux (Ubuntu) |
Fix Released
|
Undecided
|
Frank Heimes |
Bug Description
This pro-active fix is requested to provide the code for disablement of Thin Provisioning within Ubuntu 20.04, like within Ubuntu 19.10 or providing the final solution from upstream.
tags: | added: architecture-s39064 bugnameltc-183845 severity-high targetmilestone-inin2004 |
Changed in ubuntu: | |
assignee: | nobody → Skipper Bug Screeners (skipper-screen-team) |
affects: | ubuntu → linux (Ubuntu) |
Changed in ubuntu-z-systems: | |
status: | New → Incomplete |
Changed in linux (Ubuntu): | |
status: | New → Incomplete |
Changed in ubuntu-z-systems: | |
importance: | Undecided → High |
assignee: | nobody → Skipper Bug Screeners (skipper-screen-team) |
Changed in linux (Ubuntu): | |
assignee: | Skipper Bug Screeners (skipper-screen-team) → nobody |
tags: |
added: severity-critical removed: severity-high |
summary: |
- [UBUNTU 20.04] Thin Provisioning support (disablement or final solution) + [UBUNTU 20.04] Fix a potential data corruption issue for thin + provisioned devices |
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In eoan we shipped:
57d53162face UBUNTU: SAUCE: Revert "s390/dasd: Add discard support for ESE volumes"
And as it is a SAUCE patch, we continue to ship it, as we don't implicitely drop them:
964ce509e2de Revert "s390/dasd: Add discard support for ESE volumes"
Currently if you grep for DASD_FEATURE_ DISCARD: DISCARD include/ uapi/asm/ dasd.h: #define DASD_FEATURE_ DISCARD 0x080 s390/block/ dasd_fba. c: dasd_set_ feature( cdev, DASD_FEATURE_ DISCARD, 1);
$ git grep DASD_FEATURE_
arch/s390/
drivers/
It is only enabled for the FBA devices.
Since the original request to disable DISCARD for ESE volumes, we have not re-enabled them.
So what is the purporse of this request? Do you want us to disable it for FBA volumes too?
We will not re-enable DISCARD for ESE volumes, until you say it's good again.