Public bug reported: Support for adding partitions on bcache devices only landed in 4.10:
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=b8c0d911ac5285e6be8967713271a51bdc5a936a Although it is a small change, it is not backported to any of the xenial kernels and it only exists naturally in 4.10. ➜ ubuntu-xenial git:(master) git tag --contains=b8c0d911ac5285e6be8967713271a51bdc5a936a Ubuntu-hwe-4.10.0-13.15_16.04.2 Ubuntu-hwe-4.10.0-14.16_16.04.1 Ubuntu-hwe-4.10.0-19.21_16.04.1 Ubuntu-hwe-4.10.0-20.22_16.04.1 Ubuntu-hwe-4.10.0-21.23_16.04.1 Ubuntu-hwe-4.10.0-22.24_16.04.1 Ubuntu-hwe-4.10.0-25.29_16.04.1 Ubuntu-hwe-4.10.0-26.30_16.04.1 Ubuntu-hwe-4.10.0-28.32_16.04.1 Ubuntu-hwe-edge-4.10.0-9.11_16.04.2 Ubuntu-lts-4.10.0-10.12_16.04.1 Ubuntu-lts-4.10.0-11.13_16.04.1 Ubuntu-lts-4.10.0-12.14_16.04.1 Ubuntu-lts-4.10.0-13.15_16.04.1 Ubuntu-lts-4.10.0-7.9_16.04.1 Ubuntu-lts-4.10.0-8.10_16.04.1 Ubuntu-lts-4.10.0-9.11_16.04.1 Ubuntu-lts-4.10.0-9.11_16.04.2 This will prevent usage of multiple partitions on the same device which is the case when data and journal are collocated. Also, the lack of that feature prevents dmcrypt usage as multiple partitions are created on a device in this case. Could that be backported to the 4.4 kernel? ** Affects: linux (Ubuntu) Importance: Undecided Status: Incomplete ** Tags: canonical-bootstack cpec -- 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/1705493 Title: [4.4][backport] Multiple partitions are not supported on a bcache device Status in linux package in Ubuntu: Incomplete Bug description: Support for adding partitions on bcache devices only landed in 4.10: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=b8c0d911ac5285e6be8967713271a51bdc5a936a Although it is a small change, it is not backported to any of the xenial kernels and it only exists naturally in 4.10. ➜ ubuntu-xenial git:(master) git tag --contains=b8c0d911ac5285e6be8967713271a51bdc5a936a Ubuntu-hwe-4.10.0-13.15_16.04.2 Ubuntu-hwe-4.10.0-14.16_16.04.1 Ubuntu-hwe-4.10.0-19.21_16.04.1 Ubuntu-hwe-4.10.0-20.22_16.04.1 Ubuntu-hwe-4.10.0-21.23_16.04.1 Ubuntu-hwe-4.10.0-22.24_16.04.1 Ubuntu-hwe-4.10.0-25.29_16.04.1 Ubuntu-hwe-4.10.0-26.30_16.04.1 Ubuntu-hwe-4.10.0-28.32_16.04.1 Ubuntu-hwe-edge-4.10.0-9.11_16.04.2 Ubuntu-lts-4.10.0-10.12_16.04.1 Ubuntu-lts-4.10.0-11.13_16.04.1 Ubuntu-lts-4.10.0-12.14_16.04.1 Ubuntu-lts-4.10.0-13.15_16.04.1 Ubuntu-lts-4.10.0-7.9_16.04.1 Ubuntu-lts-4.10.0-8.10_16.04.1 Ubuntu-lts-4.10.0-9.11_16.04.1 Ubuntu-lts-4.10.0-9.11_16.04.2 This will prevent usage of multiple partitions on the same device which is the case when data and journal are collocated. Also, the lack of that feature prevents dmcrypt usage as multiple partitions are created on a device in this case. Could that be backported to the 4.4 kernel? To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1705493/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
