[SOLVED] Problem with swap

gangosan · 2016-10-07 21:33:10

Hello i hawe installed bl-Hydrogen-amd64_20160710.iso usb install.
And my swap not work please help me.
http://i.imgur.com/U596b7i.png

-- Mod edit: Please use thumbnails!---

Last edited by nobody (2016-10-08 15:10:00)

damo · 2016-10-07 21:41:55

How do you know it isn't working?

gangosan · 2016-10-07 22:10:30

damo wrote:

How do you know it isn't working?

Because my system not detect swap show 00
https://s19.postimg.org/p4zbjtweb/image … 088007.gif

Last edited by gangosan (2016-10-07 22:12:18)

damo · 2016-10-07 22:24:11

Please post the contents of '/etc/fstab', using [ code ] tags

Bearded_Blunder · 2016-10-07 22:36:25

What is the output from

swapon

in a terminal?
if it doesn't show (in your case from the posted gparted screenshot) /dev/sda3 then try:

sudo swapon /dev/sda3

which should activate it, though doing that manually might not survive a reboot.
what do you see if you do

cat /etc/fstab

is there an entry for swap?

gangosan · 2016-10-07 22:50:05

damo wrote:

Please post the contents of '/etc/fstab', using [ code ] tags

I dont know how to do it

gangosan · 2016-10-07 22:52:32

gangosan@Gangosan:~$ swapon
gangosan@Gangosan:~$ sudo swapon /dev/sda3
[sudo] password for gangosan: 
Sorry, try again.
[sudo] password for gangosan: 
gangosan@Gangosan:~$ sudo swapon /dev/sda3
swapon: /dev/sda3: swapon failed: Device or resource busy

gangosan@Gangosan:~$ 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/sda5 during installation
UUID=32d685d8-814d-49ce-bf61-ab19c913a13b /               ext3    errors=remount-ro 0       1
/dev/sr0        /media/cdrom0   udf,iso9660 user,noauto     0       0
gangosan@Gangosan:~$

===== MOD EDIT =====
Added code tags.

Last edited by Sector11 (2016-10-08 15:56:18)

gangosan · 2016-10-07 22:56:01

gangosan@Gangosan:~$ /etc/fstab
bash: /etc/fstab: Permission denied
gangosan@Gangosan:~$

Bearded_Blunder · 2016-10-07 23:46:33

What I'd do:

sudo mkswap /dev/sda3

to make sure it's not corrupted somehow

 sudo swapon /dev/sda3

to get it activated, if either give errors, I'm stumped as to why, if not then

echo "/dev/sda3	none	sw	0	0" | sudo tee -a /etc/fstab

to add the entry so it gets used next boot

systemctl reboot

to check it does.

If not then wait for someone who knows their Linux, I'm still a relative n00b with it.

Last edited by Bearded_Blunder (2016-10-07 23:47:41)

gangosan · 2016-10-07 23:50:39

gangosan@Gangosan:~$ sudo mkswap /dev/sda3
[sudo] password for gangosan:
mkswap: error: /dev/sda3 is mounted; will not make swapspace
gangosan@Gangosan:~$ sudo swapon /dev/sda3
swapon: /dev/sda3: swapon failed: Device or resource busy
gangosan@Gangosan:~$ cho "/dev/sda3" nonesw00" | sudo tee -a /etc/fstab
>
> systemctl reboot
>
>

gangosan · 2016-10-07 23:52:46

gangosan@Gangosan:~$ to check it does.
bash: to: command not found
gangosan@Gangosan:~$ If not then wait for someone who knows their Linux, I'm still a relative n00b with it.

Bearded_Blunder · 2016-10-07 23:56:08

gangosan wrote:

mkswap: error: /dev/sda3 is mounted; will not make swapspace

what's the output of

mount

gangosan · 2016-10-07 23:58:33

This https://jpst.it/O84T

Bearded_Blunder · 2016-10-08 00:03:17

hmm well I can't see /dev/sda3 in there, so I'm now officially stumped, you'll have to wait for one of the proper experts to appear, sorry

gangosan · 2016-10-08 00:10:59

Thanks for trying to help. After follow your instruction swap here.
http://i.imgur.com/MkNYPsx.png

Horizon_Brave · 2016-10-08 03:09:46

Why not try using mount to mount /dev/sda3 to another partition like /mount/ or something ?

Horizon_Brave · 2016-10-08 03:18:28

Also :

" If using a swap partition lookup the UUID of the swap partition using the blkid(8) command. Simply run blkid with root privileges and compare the UUID it has with what is in /etc/fstab. If there is a discrepancy, replace the UUID in /etc/fstab with the one output by blkid. "

You'll probably need to install the blkid command to do this.

pvsage · 2016-10-08 07:37:41

gangosan wrote:

Thanks for trying to help. After follow your instruction swap here.
http://i.imgur.com/MkNYPsx.png

I could be wrong (and often am), but that looks to me like your swap partition is mounted; the system simply hasn't encountered a high-memory-usage situation that would require writing to swap.

photonucleon · 2016-10-08 08:38:57

pvsage wrote:

gangosan wrote:
Thanks for trying to help. After follow your instruction swap here.
http://i.imgur.com/MkNYPsx.png
I could be wrong (and often am), but that looks to me like your swap partition is mounted; the system simply hasn't encountered a high-memory-usage situation that would require writing to swap.

pvsage looks right to me. Your swap looks like it is now working perfectly in this screenshot. For reference of future thread readers: basically speaking, if you use a lot of RAM, your system will automatically use swap as "virtual memory". Until this occurs, it is perfectly normal to see zero swap usage.

Last edited by photonucleon (2016-10-08 08:40:53)

Head_on_a_Stick · 2016-10-08 09:28:02

Check swap usage with:

free -h

As Bearded_Blunder noted, a line in /etc/fstab is needed to mount the swap partition at boot unless you have a GPT disk.

#1 2016-10-07 21:33:10

[SOLVED] Problem with swap

#2 2016-10-07 21:41:55

Re: [SOLVED] Problem with swap

#3 2016-10-07 22:10:30

Re: [SOLVED] Problem with swap

#4 2016-10-07 22:24:11

Re: [SOLVED] Problem with swap

#5 2016-10-07 22:36:25

Re: [SOLVED] Problem with swap

#6 2016-10-07 22:50:05

Re: [SOLVED] Problem with swap

#7 2016-10-07 22:52:32

Re: [SOLVED] Problem with swap

#8 2016-10-07 22:56:01

Re: [SOLVED] Problem with swap

#9 2016-10-07 23:46:33

Re: [SOLVED] Problem with swap

#10 2016-10-07 23:50:39

Re: [SOLVED] Problem with swap

#11 2016-10-07 23:52:46

Re: [SOLVED] Problem with swap

#12 2016-10-07 23:56:08

Re: [SOLVED] Problem with swap

#13 2016-10-07 23:58:33

Re: [SOLVED] Problem with swap

#14 2016-10-08 00:03:17

Re: [SOLVED] Problem with swap

#15 2016-10-08 00:10:59

Re: [SOLVED] Problem with swap

#16 2016-10-08 03:09:46

Re: [SOLVED] Problem with swap

#17 2016-10-08 03:18:28

Re: [SOLVED] Problem with swap

#18 2016-10-08 07:37:41

Re: [SOLVED] Problem with swap

#19 2016-10-08 08:38:57

Re: [SOLVED] Problem with swap

#20 2016-10-08 09:28:02

Re: [SOLVED] Problem with swap

Board footer