using multiple LUKS volumes with keyfiles
I want to use multiple LUKS crypted volumes (LV of LVM) with Debian.
At now it works with one volume and passphrase, I type in on logon. The targen is to have multiple volumes and to type-in only the passphrase of one of them and open another crypted volumes with keyfiles stored on the first volume.
The problem I have is, that on the erly cryptsetup using crypttab after enter the first passphrase the filesystem are not mounted (and not fscked).
Using a script in /etc/rc.local would not allowed automated fsck and I expect problems with crypting of /var.
What possibilities do I have?
("/" shouldn't be crypted, only things like /var and /home)
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