------- Comment From [email protected] 2019-10-01 08:40 EDT------- Comment from Jan Hoeppner 2019-09-24 07:16:57 CDT
The thin provisioning feature introduces an IOCTL and the discard support to allow userspace tools and filesystems to release unused and previously allocated space respectively. During some internal performance improvements and further tests, the release of allocated space revealed some issues that may lead to data corruption in some configurations when filesystems are mounted with discard support enabled. As we're working on a fix and trying to clarify the situation, it is highly recommended at this point to _not_ enable discard for any filesystem when working with ESE DASDs. mkfs should also be called with discard disabled for ESE DASDs (e.g. mkfs.ext4 -E nodiscard /dev/dasdX). Fixes and clarifications will be provided as soon as possible. Regards, Jan -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. 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 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu-z-systems/+bug/1830731/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : [email protected] Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
