Created attachment 638422 [details] emerge --info Hi, x32-lvm2 doesn't work properly on x32 ABI. I've created simple test system with latest x32 stage3 image (which is stage3-x32-20200422T214502Z.tar.xz right now) with sys-kernel/gentoo-kernel-bin on my qemu system. x32test ~ # truncate -s 4G test.img x32test ~ # losetup -f test.img x32test ~ # x32test ~ # losetup -l NAME SIZELIMIT OFFSET AUTOCLEAR RO BACK-FILE DIO LOG-SEC /dev/loop0 0 0 0 0 /root/test.img 0 512 x32test ~ # x32test ~ # x32test ~ # pvcreate /dev/loop0 WARNING: Failed to connect to lvmetad. Falling back to device scanning. Error reading device /dev/loop0 at 0 length 4096. Error reading device /dev/sda at 0 length 512. Error reading device /dev/sda at 0 length 4096. Error reading device /dev/sda1 at 0 length 4096. Error reading device /dev/root at 0 length 4096. Device /dev/loop0 excluded by a filter. x32test ~ # x32test ~ # lvm lvm> lvs WARNING: Failed to connect to lvmetad. Falling back to device scanning. lvm> vgs lvm> pvs Error reading device /dev/loop0 at 0 length 4096. Error reading device /dev/sda at 0 length 512. Error reading device /dev/sda at 0 length 4096. Error reading device /dev/sda1 at 0 length 4096. Error reading device /dev/root at 0 length 4096. lvm> exit Exiting. x32test ~ # /etc/init.d/lvmetad start * Starting lvmetad ... [ ok ] x32test ~ # pvcreate /dev/loop0 Error reading device /dev/loop0 at 0 length 4096. Error reading device /dev/loop0 at 0 length 4096. Error reading device /dev/sda at 0 length 512. Error reading device /dev/sda at 0 length 4096. Error reading device /dev/sda1 at 0 length 4096. Error reading device /dev/root at 0 length 4096. Device /dev/loop0 excluded by a filter. x32test ~ # lvm dev filter is gentoo default filter which works on loop* devices (excluded by the filter) x32test ~ # lvmconfig --typeconfig diff devices { filter=["r|/dev/nbd.*|","a/.*/"] } x32test ~ # and its use flags x32test ~ # emerge lvm2 -v1p These are the packages that would be merged, in order: Calculating dependencies... done! [ebuild R ] sys-fs/lvm2-2.02.187-r2::gentoo USE="readline thin udev -device-mapper-only -lvm2create_initrd -sanlock (-selinux) -static -static-libs -systemd" 0 KiB
Created attachment 638424 [details] qlist -ISRv
It seems, this is libaio issue FEATURES=test dev-libs/libaio-0.3.110:0 failed with only x32 abi. When the, testing version of libaio emerged, ACCEPT_KEYWORDS=~amd64 FEATURES=test emerge libaio -v1a x32 tests failed with mem allocs fails, however lvm2 works on sync-io x32test ~ # truncate -s 4G test.img x32test ~ # losetup -f test.img x32test ~ # losetup -l NAME SIZELIMIT OFFSET AUTOCLEAR RO BACK-FILE DIO LOG-SEC /dev/loop0 0 0 0 0 /root/test.img 0 512 x32test ~ # pvcreate /dev/loop0 WARNING: Failed to connect to lvmetad. Falling back to device scanning. Failed to set up async io, using sync io. Physical volume "/dev/loop0" successfully created. x32test ~ # x32test ~ # pvs WARNING: Failed to connect to lvmetad. Falling back to device scanning. Failed to set up async io, using sync io. PV VG Fmt Attr PSize PFree /dev/loop0 lvm2 --- 4.00g 4.00g x32test ~ # qlist -ISv lvm2 libaio dev-libs/libaio-0.3.112:0 sys-fs/lvm2-2.02.187-r2:0
Making this low priority since I doubt anyone uses x32 for real work. Patches welcome.
Created attachment 886569 [details, diff] proposed patch for libaio It seems like underlying issue is problems with libaio, here is the patch that fixes: 1. wrong syscall numbers 2. problem with variable sizes (32 vs 64) It passes tests (FEATURES=test) now. Upstream is dead though.
(In reply to Andrii Batyiev from comment #4) > Created attachment 886569 [details, diff] [details, diff] > proposed patch for libaio > > It seems like underlying issue is problems with libaio, here is the patch > that fixes: > 1. wrong syscall numbers > 2. problem with variable sizes (32 vs 64) > > It passes tests (FEATURES=test) now. > > Upstream is dead though. I don't suppose you could try submit it at https://pagure.io/libaio/pull-requests, just so we have a reference for it?
