** Changed in: linux (Ubuntu)
Importance: Undecided => High
** Changed in: linux (Ubuntu)
Status: New => Triaged
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https://bugs.launchpad.net/bugs/1762353
Title:
[Ubuntu 18.04] cryptsetup: 'device-mapper: reload ioctl on failed'
when setting up a second end-to-end encrypted disk
Status in Ubuntu on IBM z Systems:
Triaged
Status in linux package in Ubuntu:
Triaged
Bug description:
Problem Description:
Environment: z14 VM Guest system with one CEX6C CCA coprocessor
in toleration mode (i.e. CEX6 HW presented as CEX5)
OS: Ubuntu 18.04 Prerelease
Setting up a second dm-crypt device using protected CCA paes-xts keys fails.
The problem is reproducible.
Details
=======
Setting up two or more plain end-to-end encrypted disks using 'cryptsetup'
fails when using a cipher based on the protected key mechanism.
The setup needs the paes and pkey modules loaded, the former providing the
paes-xts-plain64 cipher (cat /proc/crpyto |grep paes).
A second attempt to establish an end-to-end encrypted disk fails
with : "device-mapper: reload ioctl on failed: No such file or directory."
The problem is independent of the second encrypted disk being based on
a second DASD or second partition on one DASD.
---uname output---
Linux s3514004 4.13.0-25-generic #29-Ubuntu SMP Mon Jan 8 21:15:56 UTC 2018
s390x s390x s390x GNU/Linux
---Steps to Reproduce---
1.) The following cryptsetup statement works, and is the first one I issued.
cryptsetup plainOpen --key-file securekey.bin --key-size 1024 --cipher
paes-xts-plain64 /dev/disk/by-path/ccw-0.0.NNNN-part1 enc-pv1
2.) After this successful statement, I issued the following:
cryptsetup plainOpen --key-file securekey.bin --key-size 1024 --cipher
paes-xts-plain64 /dev/disk/by-path/ccw-0.0.NNNN-part2 enc-pv2
device-mapper: reload ioctl on failed: No such file or directory.
See attached patch (comment #1) as fix.
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