Hi, I'm going on with my work to have systemd in initrd on NixOS (using dracut is a little complicated at the moment). Everything works fine, I've ported luks and lvm and both work separately. However I'm hitting a problem when using luks and lvm on top of luks.
SETUP Software: systemd 212, lvm 2.02.111, cryptsetup 1.6.3, kernel 3.14.22 The test is done with kvm. I have a device /dev/vda formatted with luks which gets opened in /dev/mapper/luksroot. Then lvm with a vg named "vg" and an lv named "lv" so that it gets named /dev/mapper/vg-lv. I have a sysroot.mount What=/dev/mapper/vg-lv and requires/after the cryptsetup service. The cryptsetup service runs systemd-cryptsetup attach luksroot /dev/vda. All fine, the luks gets opened correctly etc. PROBLEM Note I don't do any vgchange -a y, in any service, in any script. The /dev/vda appears, and then cryptsetup service runs. Luks is unlocked, /dev/mapper/luksroot and systemd tries to mount sysroot.mount. This is the problem, systemd does not wait for /dev/mapper/vg-lv to appear before mounting sysroot. In fact, it does not exist at all. It's like luksOpen + some udev rule tell udev/systemd that the device is there, but it's not. Note: if I disable the cryptsetup service, sysroot.mount correctly waits for /dev/mapper/vg-lv to appear. So the setup is pretty simple, I've read the udev rules however they're a little complex for my poor knowledge. The udev rules installed are all of lvm, dm. From systemd/udev it's: 60-cdrom_id.rules 60-persistent-storage.rules 80-drivers.rules 99-systemd.rules Any hints on where the culprit can be? Same happens with lvmetad. Best regards,
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