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authorMauricio Faria de Oliveira <mauricio.foliveira@gmail.com>2017-02-28 17:30:22 -0300
committerLennart Poettering <lennart@poettering.net>2017-02-28 21:30:22 +0100
commita6f8786a56c0acba5997e2c58d0df6c80ffde7f1 (patch)
tree4ff20ff1b42410cc2d9814b4149b5c35b9f9beac /CODING_STYLE
parent9d70cba9879b3526aafe2dd2de7630758477b133 (diff)
cryptsetup-generator: run cryptsetup service before swap unit (#5480)
If the cryptsetup service unit and swap unit for a swap device are not strictly ordered, it might happen that the swap unit activates/mounts the swap device before its cryptsetup service unit has a chance to run the 'mkswap' command (that it is programmed to). This leads to the following error: Starting Cryptography Setup for sda3_crypt... [ OK ] Found device /dev/mapper/sda3_crypt. Activating swap /dev/mapper/sda3_crypt... [ OK ] Activated swap /dev/mapper/sda3_crypt. [ OK ] Reached target Swap. [FAILED] Failed to start Cryptography Setup for sda3_crypt. See 'systemctl status systemd-cryptsetup@sda3_crypt.service' for details. [DEPEND] Dependency failed for Encrypted Volumes. Which happens because the swap device is already mounted: # systemctl status systemd-cryptsetup@sda3_crypt.service <...> Active: failed (Result: exit-code) since Mon 2017-02-27 14:21:43 CST; 54s ago <...> <...> systemd[1]: Starting Cryptography Setup for sda3_crypt... <...> mkswap[2420]: mkswap: error: /dev/mapper/sda3_crypt is mounted; will not make swapspace <...> So, modify cryptsetup-generator to include a 'Before=' option for the respective 'dev-mapper-%i.swap' device in the cryptsetup service unit. Now, correct ordering is ensured, and the error no longer occurs: Starting Cryptography Setup for sda3_crypt... [ OK ] Found device /dev/mapper/sda3_crypt. [ OK ] Started Cryptography Setup for sda3_crypt. Activating swap /dev/mapper/sda3_crypt... [ OK ] Reached target Encrypted Volumes. [ OK ] Activated swap /dev/mapper/sda3_crypt. [ OK ] Reached target Swap.
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