------- Comment From heinz-werner_se...@de.ibm.com 2020-01-23 02:45 EDT------- Comment: Is the revert in LP 1846219 already sufficient to complete this ticket for Eoan? (I assume yes) Or do all the patches from LP 1830731 need to be reverted?
Answer: No, this is not sufficient. The revert in LP 1846219 only reverts a part of the feature. Unfortunately we have to disable the whole feature. But we would like to disable the feature instead of reverting all patches. The patch to disable the feature is attached here Created attachment 140187 [details] s390/dasd: disable ese support due to possible data corruption Devices are formatted in multiple of tracks. For an enhanced space efficient (ese) volume we get errors when accessing not formatted tracks. In this case the driver either formats the track on the flight for write requests or returns zero data for read requests. In case a request spans multiple tracks, the indication of an unformatted track presented for the first track is incorrectly applied to all tracks covered by the request. As a result, tracks containing data will be handled as if empty, resulting in zero data being returned on read, or overwriting existing data with zero on write. While working on a proper fix disable the feature by always returning zero for the ese check. This disables all ese special handling and prevents the possible data corruption. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1860535 Title: [UBUNTU] - Disable Thin Provisioning to prevent data loss To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu-z-systems/+bug/1860535/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
