JFYI. All that you need to properly backport this series is:
1. port https://github.com/torvalds/linux/commit/ce0d5bd3a6c176f9a3bf867624a07119dd4d0878 (as this patch changes cephfs network protocol and have to be applied before cephfs idmapped mounts as in this feature we are extending cephfs network protocol too) 2. apply patches from https://lore.kernel.org/all/20230807132626.182101-1-aleksandr.mikhalit...@canonical.com/ (alternatively you can take patches from https://github.com/ceph/ceph-client/commits/testing starting from commit https://github.com/ceph/ceph-client/commit/6efd3e9974a02bda26e039ce81a3824db3cee74f until https://github.com/ceph/ceph-client/commit/5a077938dadefa2b159267718d7998ca880aeb9c ) As I can see here https://git.launchpad.net/~ubuntu- kernel/ubuntu/+source/linux/+git/mantic/commit/fs/ceph?h=master- next&id=e5e9604b7311bda41ffe266dbd60cf1eb637611b you have also backported fscrypt series. It's not a strict requirement or dependency. -- 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/2032959 Title: ceph: support idmapped mounts Status in linux package in Ubuntu: Fix Released Status in linux source package in Mantic: Fix Released Bug description: [Impact] Now that zfs supports idmapped mounts the only user of shiftfs remains ceph. However a patch set has been posted upstream to enable such feature also in ceph: https://lore.kernel.org/all/20230807132626.182101-1-aleksandr.mikhalit...@canonical.com/ This is also maintained in this github repository: https://github.com/ceph/ceph-client.git Include this patch in our mantic kernel, so that the LXD team can do some testing to see if we can get rid of shiftfs and rely completely on upstream idmapped mounts. [Test case] Create an LXD container using a ceph backend, disable shiftfs and verify if everything is still working (LXD team will provide a proper test case for this). [Fix] Apply idmapped mounts patch set from: https://github.com/ceph/ceph-client.git [Regression potential] This patch set is still not upstream and still experimental, therefore we may experience regression or system crashes in systems that are using the ceph filesystem. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/2032959/+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
