On 30/01/15 09:49, Jan Janssen wrote: > > But really: why not use automounting logic in fstab?: > /dev/mapper/data /home/myuser/data ext4 noauto,x-systemd.automount 0 0 > > No need to manually trigger a mount. And you can even use "noauto" in > crypttab so that the encrypted device is only opened once the mount point is > accessed the first time. Thanks Jan. as it happens, I've just been trying automount as a solution before I read your answer ;)
But it leads me on to another question, if that's ok... I've set up an encrypted volume configured in crypttab/fstab with key/header on a path that is automounted. That path is on a encrypted removable usb "keyring" that's inserted at boot and everything works: the keyring is unlocked (passphrase requested) and mounted and then the other volumes are unlocked using their key/header on the keyring and mounted. However, after boot I want to pull out the keyring (it's only needed for the key/header during systemd-cryptsetup). But when I do this, the encrypted volume is unmounted and I don't want this to happen. Here's what I have in crypttab: |# <name> <device> <password> <options> keyring PARTLABEL=keyring none noauto abc /dev/lvm/abc /root/keyring/abc.key header=/root/keyring/abc.hdr xyz /dev/lvm/xyz /root/keyring/xyz.key header=/root/keyring/xyz.hdr| and fstab: | <file system> <dir> <type> <options> /dev/mapper/keyring /root/keyring ext4 ro,noauto,x-systemd.automount /dev/mapper/abc /srv/abc ext4 /dev/mapper/xyz /srv/xyz ext4| I don't want to lose abc and xyz when I pull out keyring. I think it might be due to the "RequiresMountsFor=/root/keyring/abc.key" entries that systemd generates in the cryptsetup unit. I have tried using a drop-in to cancel that option: [Unit] RequiresMountsFor= but that didn't affect the setting, as I verified with $ systemctl daemon-reload $ systemctl show systemd-cryptsetup\@abc --property RequiresMountsFor RequiresMountsFor=/root/keyring/abc.key Do you know if/how I can achieve this functionality? Much appreciated, John
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