SWAP not initialized?

[kogz]

Hi,

I use 14.04. I have 16 GB of RAM and two disks (SDD and traditional HDD), on SDD: / and on HDD: /home and swap. After the installation I can see that swap is completely not initialized. SWAP partition seems to be ready.


~$ free
total used free shared buffers cached
Mem: 16314468 1899628 14414840 172664 55188 745220
-/+ buffers/cache: 1099220 15215248
Swap: 0 0 0

Could you please suggest how can I troubleshoot this?

Thank you!
K

[Bashing-om]

kogz; Humm,

Agreed, not looking like swap is set up. Let's take a look at what the system has set up for swapping:
post back - between code tags - the outputs of terminal commands:


sudo blkid
sudo fdisk -lu ## if GPT partitioning requires gdisk instead##
sudo parted -l
cat /etc/fstab

code tag tutorial:
http://ubuntuforums.org/showthread.php?t=2171721&p=12776168#post12776168

And we will see what is and what might be done.




where there are solutions




there are no problems

[kogz]

Hi! Thank you Bashin-om for your reply. These are command results:


$ sudo blkid
/dev/sda2: UUID="0242e993-eef0-48dc-a93c-039b44ff47de" TYPE="swap"
/dev/sda3: UUID="c30233c1-55a1-4f6d-aa87-293300a55689" TYPE="ext4"
/dev/sda4: LABEL="Store" UUID="14B677F7B677D7A6" TYPE="ntfs"
/dev/sdb1: LABEL="SYSTEM" UUID="3093-7287" TYPE="vfat"
/dev/sdb2: LABEL="Recovery" UUID="0664941C64941093" TYPE="ntfs"
/dev/sdb4: LABEL="OS" UUID="50C05001C04FEC32" TYPE="ntfs"
/dev/sdb5: LABEL="Restore" UUID="DAAE9E1FAE9DF46B" TYPE="ntfs"
/dev/sdb6: UUID="f53e1887-6b7a-4cae-8606-7b775d06a418" TYPE="ext4"


$ sudo gdisk -l /dev/sda
GPT fdisk (gdisk) version 0.8.8

Partition table scan:
MBR: protective
BSD: not present
APM: not present
GPT: present

Found valid GPT with protective MBR; using GPT.
Disk /dev/sda: 1953525168 sectors, 931.5 GiB
Logical sector size: 512 bytes
Disk identifier (GUID): 9CCBCC4F-225E-4EC0-BC57-C11362EA5179
Partition table holds up to 128 entries
First usable sector is 34, last usable sector is 1953525134
Partitions will be aligned on 8-sector boundaries
Total free space is 5485 sectors (2.7 MiB)

Number Start (sector) End (sector) Size Code Name
1 34 262177 128.0 MiB 0C01 Microsoft reserved part
2 264192 34263039 16.2 GiB 8200
3 34263040 993894399 457.6 GiB 8300
4 993894400 1953521663 457.6 GiB 0700 Basic data partition



$ sudo gdisk -l /dev/sdb
GPT fdisk (gdisk) version 0.8.8

Partition table scan:
MBR: protective
BSD: not present
APM: not present
GPT: present

Found valid GPT with protective MBR; using GPT.
Disk /dev/sdb: 246162672 sectors, 117.4 GiB
Logical sector size: 512 bytes
Disk identifier (GUID): F4D8EDD4-0472-43F1-9027-C0A5E23B9B41
Partition table holds up to 128 entries
First usable sector is 34, last usable sector is 246162638
Partitions will be aligned on 2048-sector boundaries
Total free space is 3245 sectors (1.6 MiB)

Number Start (sector) End (sector) Size Code Name
1 2048 206847 100.0 MiB EF00 EFI system partition
2 206848 2050047 900.0 MiB 2700 Basic data partition
3 2050048 2312191 128.0 MiB 0C01 Microsoft reserved part
4 2312192 103254015 48.1 GiB 0700 Basic data partition
5 204197888 246161407 20.0 GiB 2700 Basic data partition
6 103254016 204197887 48.1 GiB 8300



$ sudo parted -l
Model: ATA ST1000LM024 HN-M (scsi)
Dysk /dev/sda: 1000GB
Rozmiar sektora (logiczny/fizyczny): 512B/4096B
Tablica partycji: gpt

Numer Początek Koniec Rozmiar System plików Nazwa Flaga
1 17,4kB 134MB 134MB Microsoft reserved partition msftres
2 135MB 17,5GB 17,4GB linux-swap(v1)
3 17,5GB 509GB 491GB ext4
4 509GB 1000GB 491GB ntfs Basic data partition msftdata


Model: ATA SanDisk SDSSDP12 (scsi)
Dysk /dev/sdb: 126GB
Rozmiar sektora (logiczny/fizyczny): 512B/512B
Tablica partycji: gpt

Numer Początek Koniec Rozmiar System plików Nazwa Flaga
1 1049kB 106MB 105MB fat32 EFI system partition ładowalna
2 106MB 1050MB 944MB ntfs Basic data partition ukryta, diag
3 1050MB 1184MB 134MB Microsoft reserved partition msftres
4 1184MB 52,9GB 51,7GB ntfs Basic data partition msftdata
6 52,9GB 105GB 51,7GB ext4
5 105GB 126GB 21,5GB ntfs Basic data partition ukryta, diag



$ cat /etc/fstab
# /etc/fstab: static file system information.
#
# Use 'blkid' to print the universally unique identifier for a
# device; this may be used with UUID= as a more robust way to name devices
# that works even if disks are added and removed. See fstab(5).
#
# <file system> <mount point> <type> <options> <dump> <pass>
# / was on /dev/sdb6 during installation
UUID=f53e1887-6b7a-4cae-8606-7b775d06a418 / ext4 errors=remount-ro 0 1
# /boot/efi was on /dev/sdb1 during installation
UUID=3093-7287 /boot/efi vfat defaults 0 1
# /home was on /dev/sda3 during installation
UUID=c30233c1-55a1-4f6d-aa87-293300a55689 /home ext4 defaults 0 2
# swap was on /dev/sda2 during installation
#UUID=a6567e61-2852-4b15-bd0f-884b75773a8b none swap sw 0 0
/dev/mapper/cryptswap1 none swap sw 0 0


Thank you for any suggestions!

[LastDino]

Is your swap encrypted? Or did you encrypt home during installation? (There is bug which encrypts swap too if you do so)

Also, the UUID in fstab is not matching the one in output of ''sudo blkid'', replacing that should work, but I've never worked with encrypted swaps, so I would wait for someone else to address the issue just in case.

[kogz]

Yes, my home was encrypted during installation. It might be this bug, is there any description of it and how to proceed?

Please also let me tell you that during my troubleshooting I formatted swap partition using gpated, so now swap aprtition is most probably not encrypted and this can explain why UUID is different. How should I modify my fstab to use unencrypted swap partition or make my swap partition encrypted again?

Thank you!

[obake2]

This seems to be a bug with Ubuntu 14.04:

http://ubuntuforums.org/showthread.php?t=2221067



Please add yourself to the Launchpad Bug reports that are listed on that link. :smile:
I'm also affected by this bug and waiting for a proper fix.