Status changed to 'Confirmed' because the bug affects multiple users.
** Changed in: cryptsetup (Ubuntu)
Status: New => Confirmed
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https://bugs.launchpad.net/bugs/1879085
Title:
update-initramfs can't handle encrypted swap-files
Status in cryptsetup package in Ubuntu:
New
Status in initramfs-tools package in Ubuntu:
Confirmed
Bug description:
OS: Ubuntu 20.04 Mate
I have an encrypted swap-file, which is working fine:
# grep cryptswap /etc/fstab
/dev/mapper/cryptswap none swap defaults 0 0
# grep cryptswap /etc/crypttab
cryptswap /cryptswapfile /dev/urandom swap,cipher=aes-xts-plain64,size=256
But everytime I update the kernel and update-initramfs is executed, an
error occurs:
cryptsetup: ERROR: Couldn't resolve device /cryptswapfile
cryptsetup: WARNING: Resume target cryptswap uses a key file
And after the next reboot, the system can't load the cryptswap while
booting and hangs for several minutes.
Workaround: Boot into rescue mode and wait until the loading of the
cryptswapfile timeouts. Go to a shell and comment the lines in the
fstab and crypttab. Execute # swapoff -a && update-initramfs -u. Now
uncomment the lines in fstab and crypttab again and reboot. Your
system should boot fine and you should have an encrypted swapfile.
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