[Bug 1303002] [NEW] [trusty] Swap partition not set up correctly

[Michael Flaig]

Public bug reported:

I think I found a bug with the creation of the swap, here is what I did

sda1 was kept as EFI
sda2 created as ext2 mount to /boot
sda3 created as swap
sda4 created as btrfs

I selected "Encrypt my home"
Installation went fine.

After reboot and logon I asked myself if SWAP was encrypted as I only
selected swap, after I found out that when I create a dmcrypt volume I
could not select a random key, which I would like to have for swap.

To my satisfaction crypttab was already set up!

mfl at devore:~$ cat /etc/crypttab 
cryptswap1 UUID=5300177f-d9c4-4d71-9039-b65273ce9917 /dev/urandom swap,cipher=aes-cbc-essiv:sha256

BUT: top shows, that there is no swap enabled:
top - 12:01:57 up 19 min,  5 users,  load average: 0,03, 0,07, 0,06
Tasks: 212 total,   1 running, 210 sleeping,   0 stopped,   1 zombie
%Cpu(s):  1,2 us,  0,6 sy,  0,9 ni, 97,0 id,  0,2 wa,  0,0 hi,  0,0 si,  0,0 st
KiB Mem:  10120340 total,  2343864 used,  7776476 free,     1856 buffers
KiB Swap:        0 total,        0 used,        0 free.  1625312 cached Mem

weird!

mfl at devore:~$ sudo /etc/init.d/cryptdisks restart
[sudo] password for mfl: 
 * Stopping remaining crypto disks...                                                                                                                                                      * cryptswap1 (stopped)...                                                                                                                                                         [ OK ] 
 * Starting remaining crypto disks...                                                                                                                                                      * cryptswap1 (skipped, device /dev/disk/by-uuid/5300177f-d9c4-4d71-9039-b65273ce9917 does not exist)...                                                                           [fail] 
                                                                                                                                                                                   [ OK ]

mfl at devore:~$ ls -la /dev/disk/by-uuid/
total 0
drwxr-xr-x 2 root root 100 Apr  5 11:42 .
drwxr-xr-x 5 root root 100 Apr  5 11:42 ..
lrwxrwxrwx 1 root root  10 Apr  5 11:42 3beb9864-e87b-4a61-a06d-fd351038b37d -> ../../sda4
lrwxrwxrwx 1 root root  10 Apr  5 11:42 45461e04-02c4-481b-9d6c-efa214490de1 -> ../../sda2
lrwxrwxrwx 1 root root  10 Apr  5 11:42 6B91-2F53 -> ../../sda1

Okay, partition missing? Weird! Check parted...

mfl at devore:~$ sudo parted /dev/sda print all
Model: ATA TOSHIBA THNSNH25 (scsi)
Disk /dev/sda: 256GB
Sector size (logical/physical): 512B/512B
Partition Table: gpt

Number  Start   End     Size    File system  Name  Flags
 1      1049kB  512MB   511MB   fat32              boot
 2      512MB   1024MB  512MB   ext2
 3      1024MB  6024MB  5000MB
 4      6024MB  256GB   250GB   btrfs

sda3 happens to be there, but not found by UUID with which it was set up
by the installer.

** Affects: ubiquity (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: trusty

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Title:
  [trusty] Swap partition not set up correctly

Status in “ubiquity” package in Ubuntu:
  New

Bug description:
  I think I found a bug with the creation of the swap, here is what I
  did

  sda1 was kept as EFI
  sda2 created as ext2 mount to /boot
  sda3 created as swap
  sda4 created as btrfs

  I selected "Encrypt my home"
  Installation went fine.

  After reboot and logon I asked myself if SWAP was encrypted as I only
  selected swap, after I found out that when I create a dmcrypt volume I
  could not select a random key, which I would like to have for swap.

  To my satisfaction crypttab was already set up!

  mfl at devore:~$ cat /etc/crypttab 
  cryptswap1 UUID=5300177f-d9c4-4d71-9039-b65273ce9917 /dev/urandom swap,cipher=aes-cbc-essiv:sha256

  BUT: top shows, that there is no swap enabled:
  top - 12:01:57 up 19 min,  5 users,  load average: 0,03, 0,07, 0,06
  Tasks: 212 total,   1 running, 210 sleeping,   0 stopped,   1 zombie
  %Cpu(s):  1,2 us,  0,6 sy,  0,9 ni, 97,0 id,  0,2 wa,  0,0 hi,  0,0 si,  0,0 st
  KiB Mem:  10120340 total,  2343864 used,  7776476 free,     1856 buffers
  KiB Swap:        0 total,        0 used,        0 free.  1625312 cached Mem

  weird!

  mfl at devore:~$ sudo /etc/init.d/cryptdisks restart
  [sudo] password for mfl: 
   * Stopping remaining crypto disks...                                                                                                                                                      * cryptswap1 (stopped)...                                                                                                                                                         [ OK ] 
   * Starting remaining crypto disks...                                                                                                                                                      * cryptswap1 (skipped, device /dev/disk/by-uuid/5300177f-d9c4-4d71-9039-b65273ce9917 does not exist)...                                                                           [fail] 
                                                                                                                                                                                     [ OK ]

  mfl at devore:~$ ls -la /dev/disk/by-uuid/
  total 0
  drwxr-xr-x 2 root root 100 Apr  5 11:42 .
  drwxr-xr-x 5 root root 100 Apr  5 11:42 ..
  lrwxrwxrwx 1 root root  10 Apr  5 11:42 3beb9864-e87b-4a61-a06d-fd351038b37d -> ../../sda4
  lrwxrwxrwx 1 root root  10 Apr  5 11:42 45461e04-02c4-481b-9d6c-efa214490de1 -> ../../sda2
  lrwxrwxrwx 1 root root  10 Apr  5 11:42 6B91-2F53 -> ../../sda1

  Okay, partition missing? Weird! Check parted...

  mfl at devore:~$ sudo parted /dev/sda print all
  Model: ATA TOSHIBA THNSNH25 (scsi)
  Disk /dev/sda: 256GB
  Sector size (logical/physical): 512B/512B
  Partition Table: gpt

  Number  Start   End     Size    File system  Name  Flags
   1      1049kB  512MB   511MB   fat32              boot
   2      512MB   1024MB  512MB   ext2
   3      1024MB  6024MB  5000MB
   4      6024MB  256GB   250GB   btrfs

  sda3 happens to be there, but not found by UUID with which it was set
  up by the installer.

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