$ cat /etc/fstab
#
/dev/mapper/sda3_crypt / ext4
noatime,errors=remount-ro 0 1
UUID=518c26ce-893a-49f4-ac53-1e2fac299a1e /boot ext4 defaults
0 2
/dev/mapper/sda2_crypt none swap sw
0 0
$ cat /etc/crypttab
sda2_crypt UUID=b2a2ed64-febc-4549-b07b-a9c927db52c9 none luks,swap,discard
sda3_crypt UUID=2a8c24b1-eb27-4100-b94a-f7bf8680728b none luks,discard
$ sudo blkid
/dev/mapper/sda3_crypt: UUID="73474220-1b0e-46bc-bba1-73fbbbc0a6f5" TYPE="ext4"
/dev/sda1: UUID="518c26ce-893a-49f4-ac53-1e2fac299a1e" TYPE="ext4"
PARTUUID="dfa3c187-01"
/dev/sda2: PARTUUID="dfa3c187-02"
/dev/sda3: UUID="2a8c24b1-eb27-4100-b94a-f7bf8680728b" TYPE="crypto_LUKS"
PARTUUID="dfa3c187-03"
/dev/sda4: PTUUID="06ce4633-dc19-4578-a481-bcfe0f440142" PTTYPE="gpt"
PARTUUID="dfa3c187-04"
/dev/sdb1: LABEL="System Reserved" UUID="62D24140D24119A5" TYPE="ntfs"
PARTUUID="a15007e4-01"
/dev/sdb2: UUID="CC52448F52447FE6" TYPE="ntfs" PARTUUID="a15007e4-02"
/dev/sdb3: LABEL="WinBackup" UUID="20429DB6429D90E0" TYPE="ntfs"
PARTUUID="a15007e4-03"
/dev/sdb4: PTUUID="54295cf2-f319-49df-ac11-e0530fa17bcf" PTTYPE="gpt"
PARTUUID="a15007e4-04"
The fstab and crypttab do not get changed or corrupted somehow, I've checked.
So now I manually format the partition and enable swap:
$ sudo cryptsetup luksFormat /dev/sda2
...
$ sudo cryptsetup luksOpen /dev/sda2 sda2_crypt
...
$ sudo mkswap /dev/mapper/sda2_crypt
Setting up swapspace version 1, size = 4,7 GiB (4997509120 bytes)
no label, UUID=d570d09e-e9c5-47a7-9473-d59dde947d12
$ sudo blkid
/dev/mapper/sda3_crypt: UUID="73474220-1b0e-46bc-bba1-73fbbbc0a6f5" TYPE="ext4"
/dev/sda1: UUID="518c26ce-893a-49f4-ac53-1e2fac299a1e" TYPE="ext4"
PARTUUID="dfa3c187-01"
/dev/sda3: UUID="2a8c24b1-eb27-4100-b94a-f7bf8680728b" TYPE="crypto_LUKS"
PARTUUID="dfa3c187-03"
/dev/sdb1: LABEL="System Reserved" UUID="62D24140D24119A5" TYPE="ntfs"
PARTUUID="a15007e4-01"
/dev/sdb2: UUID="CC52448F52447FE6" TYPE="ntfs" PARTUUID="a15007e4-02"
/dev/sdb3: LABEL="WinBackup" UUID="20429DB6429D90E0" TYPE="ntfs"
PARTUUID="a15007e4-03"
/dev/sda2: UUID="5e035ee2-cbac-435c-b4e5-e70cd48196c6" TYPE="crypto_LUKS"
PARTUUID="dfa3c187-02"
/dev/sda4: PTUUID="06ce4633-dc19-4578-a481-bcfe0f440142" PTTYPE="gpt"
PARTUUID="dfa3c187-04"
/dev/sdb4: PTUUID="54295cf2-f319-49df-ac11-e0530fa17bcf" PTTYPE="gpt"
PARTUUID="a15007e4-04"
/dev/mapper/sda2_crypt: UUID="d570d09e-e9c5-47a7-9473-d59dde947d12" TYPE="swap"
And replace the UUID for sda2 (5e03...) in crypttab, to this:
$ cat /etc/crypttab
sda2_crypt UUID=5e035ee2-cbac-435c-b4e5-e70cd48196c6 none luks,swap,discard
sda3_crypt UUID=2a8c24b1-eb27-4100-b94a-f7bf8680728b none luks,discard
And this will hold through the next reboot after which the partition will be
decrypted using the same passphrase as for sda3 (root), and the swap will work
fine, but running blkid will show no UUID on the partition, only PARTUUID. So
I'm guessing on successful decryption and enabling swap something happens and
the partition metadata or something gets nuked.
** Attachment added: "journalctl -b > journal.txt"
https://bugs.launchpad.net/ubuntu/+source/systemd/+bug/1567085/+attachment/4629100/+files/journal.txt
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https://bugs.launchpad.net/bugs/1567085
Title:
LUKS swap partition destroyed upon reboot in 15.10 and 16.04
Status in systemd package in Ubuntu:
Incomplete
Bug description:
Usually on every reboot, sometimes every other, the LUKS encrypted
swap partition is being destroyed. blkid shows no UUID for the
partition, cryptsetup doesn't recognize it as a LUKS partition. This
is logged:
Tra 06 23:05:41 deltalabs systemd[1]:
dev-disk-by\x2duuid-9e972bb6\x2df6dc\x2d4e64\x2d8976\x2d2df54bd076f7.device:
Job
dev-disk-by\x2duuid-9e972bb6\x2df6dc\x2d4e64\x2d8976\x2d2df54bd076f7.device/start
tim
Tra 06 23:05:41 deltalabs systemd[1]: Timed out waiting for device
dev-disk-by\x2duuid-9e972bb6\x2df6dc\x2d4e64\x2d8976\x2d2df54bd076f7.device.
Tra 06 23:05:41 deltalabs systemd[1]: Dependency failed for Cryptography
Setup for sda2_crypt.
Tra 06 23:05:41 deltalabs systemd[1]: Dependency failed for
dev-mapper-sda2_crypt.device.
Tra 06 23:05:41 deltalabs systemd[1]: Dependency failed for
/dev/mapper/sda2_crypt.
Tra 06 23:05:41 deltalabs systemd[1]: Dependency failed for Swap.
Tra 06 23:05:41 deltalabs systemd[1]: Dependency failed for Encrypted Volumes.
The disk layout is as follows:
Number Start End Size Type File system Flags
1 1049kB 1024MB 1023MB primary ext4 boot
2 1024MB 6024MB 5000MB primary
3 6024MB 406GB 400GB primary
4 406GB 430GB 24,0GB primary
#2 is LUKS swap and #3 is LUKS root, which obviously gets decrypted
and mounted okay. This started happening after an update in 15.10 few
weeks ago and aparently continues in 16.04 beta 2.
ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: systemd 229-3ubuntu2 [modified:
usr/share/dbus-1/system-services/org.freedesktop.systemd1.service]
ProcVersionSignature: Ubuntu 4.4.0-17.33-generic 4.4.6
Uname: Linux 4.4.0-17-generic x86_64
NonfreeKernelModules: zfs zunicode zcommon znvpair zavl nvidia_uvm nvidia
ApportVersion: 2.20.1-0ubuntu1
Architecture: amd64
CurrentDesktop: Unity
Date: Wed Apr 6 23:08:06 2016
InstallationDate: Installed on 2016-01-11 (86 days ago)
InstallationMedia: Ubuntu 15.10 "Wily Werewolf" - Release amd64 (20151021)
MachineType: To Be Filled By O.E.M. To Be Filled By O.E.M.
ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-4.4.0-17-generic
root=UUID=73474220-1b0e-46bc-bba1-73fbbbc0a6f5 ro quiet splash
SourcePackage: systemd
SystemdDelta:
[EXTENDED] /etc/systemd/system/display-manager.service →
/lib/systemd/system/display-manager.service.d/xdiagnose.conf
[EXTENDED] /lib/systemd/system/rc-local.service →
/lib/systemd/system/rc-local.service.d/debian.conf
[EXTENDED] /lib/systemd/system/systemd-timesyncd.service →
/lib/systemd/system/systemd-timesyncd.service.d/disable-with-time-daemon.conf
3 overridden configuration files found.
UpgradeStatus: Upgraded to xenial on 2016-04-05 (1 days ago)
dmi.bios.date: 11/26/2009
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: P1.40
dmi.board.name: A770DE+
dmi.board.vendor: ASRock
dmi.chassis.asset.tag: To Be Filled By O.E.M.
dmi.chassis.type: 3
dmi.chassis.vendor: To Be Filled By O.E.M.
dmi.chassis.version: To Be Filled By O.E.M.
dmi.modalias:
dmi:bvnAmericanMegatrendsInc.:bvrP1.40:bd11/26/2009:svnToBeFilledByO.E.M.:pnToBeFilledByO.E.M.:pvrToBeFilledByO.E.M.:rvnASRock:rnA770DE+:rvr:cvnToBeFilledByO.E.M.:ct3:cvrToBeFilledByO.E.M.:
dmi.product.name: To Be Filled By O.E.M.
dmi.product.version: To Be Filled By O.E.M.
dmi.sys.vendor: To Be Filled By O.E.M.
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