Filesystem size problem.

ubermensch00 · 2010-07-20 19:13:20

Hello everyone. I'm fairly new to Arch, however very fluent in Linux based systems. I recently installed Arch and have so far loved it. I recently ran into a problem where I went to install Nexuiz via pacman to try it out, and as it installed the program, I recieved an error message saying the "disk was full". Suddenly most of my programs would not launch, and screenlets stopped working.

I ran a df -h and I saw this:

Filesystem Size Used Avail Use% Mounted on
udev 10M 244K 9.8M 3% /dev
/dev/disk/by-uuid/22a05fe3-4b78-4c13-8e9e-f958c259875f
7.3G 7.2G 1.3G 100% /
shm 2.0G 0 2.0G 0% /dev/shm
/dev/sda1 99M 15M 79M 16% /boot
/dev/sda4 222G 59G 152G 28% /home
/dev/sdc1 995M 8.3M 987M 1% /media/disk
/dev/sdb1 466G 79G 388G 17% /media/FreeAgent Drive

When I saw the 100%, I did some searching and reading on the forums and found a thread that suggested I clean the pacman cache. So I ran a sudo pacman -Sc and now I see this:

Filesystem Size Used Avail Use% Mounted on
udev 10M 244K 9.8M 3% /dev
/dev/disk/by-uuid/22a05fe3-4b78-4c13-8e9e-f958c259875f
7.3G 5.6G 1.3G 82% /
shm 2.0G 0 2.0G 0% /dev/shm
/dev/sda1 99M 15M 79M 16% /boot
/dev/sda4 222G 59G 152G 28% /home
/dev/sdc1 995M 8.3M 987M 1% /media/disk
/dev/sdb1 466G 79G 388G 17% /media/FreeAgent Drive

82% is still very high. What I'm slightly confused about is how to control the size of that disk partition. I haven't found anything in direct reference to /dev/disk/by-uuid/22a05fe3-4b78-4c13-8e9e-f958c259875f.

I would like to know if anyone has seen this before and if they have any other suggestions on how to maintain the size of this partition so I can be certain that it does not fill to 100% again.

My setup is:
Arch Linux 86_64, 2.6.34-ARCH
xfce4 + compiz

Thanks for the help and your time.

Last edited by ubermensch00 (2010-07-20 19:14:59)

karol · 2010-07-20 19:26:21

First of all, you should find out what's eating all that space. 7 GB should be enough, but somehow some people run into space-related problems.

Next time, partition you harddrive a bit differently: give / 20 GB, you will still have enough space for /home.

> I haven't found anything in direct reference to /dev/disk/by-uuid/22a05fe3-4b78-4c13-8e9e-f958c259875f.
It's your root -'/'. The number you get is IIRC random, so good luck finding another case with the same one.

loafer · 2010-07-20 19:28:59

/dev/disk/by-uuid/... is your root (/) partition. You've got /var on there too. My / is 10GB of which just under 4GB is in use.

I have /var on a separate 10GB partition. The pacman cache does eat some space. You can clear it altogether with "pacman -Scc" but if you ever need to downgrade you'll need to grab the older package from elsewhere.

edit: karol beat me.

Last edited by loafer (2010-07-20 19:29:37)

ubermensch00 · 2010-07-20 19:30:17

Oh I see what you're saying.
Give 20GB? I guess I didn't think about it when I installed for the first time. I went with the default settings.

ubermensch00 · 2010-07-20 19:32:21

loafer wrote:

/dev/disk/by-uuid/... is your root (/) partition. You've got /var on there too. My / is 10GB of which just under 4GB is in use.
I have /var on a separate 10GB partition. The pacman cache does eat some space. You can clear it altogether with "pacman -Scc" but if you ever need to downgrade you'll need to grab the older package from elsewhere.
edit: karol beat me.

I considered running Scc, however its just shy of 1 GiG, and I have a feeling there is something more substantial I could remove. Even though 1 GiG is a lot...

karol · 2010-07-20 19:33:57

Install ncdu - it's a tiny tool that will help you discover where did the space go.

ubermensch00 · 2010-07-20 19:38:38

ncdu is telling me that /usr is at 3.6gig...

loafer · 2010-07-20 19:42:12

My /usr is 3.2GB.

karol · 2010-07-20 19:43:42

ubermensch00 wrote:

ncdu is telling me that /usr is at 3.6gig...

And what exactly is in /usr? Dig deeper. Enter enters the selected directory, left arrow climbs back.

Edit: As loafer pointed out, it's quite normal. You may simply need a bigger /

Last edited by karol (2010-07-20 19:44:55)

ubermensch00 · 2010-07-20 19:53:51

Yeah I going further in to the directories and seeing whats taking up the most room. To be honest there isn't anything unreasonable. I got rid of a few things I don't use. However is there a way to increase the size of / without re-installing?

karol · 2010-07-20 19:56:03

> However is there a way to increase the size of / without re-installing?
You can try but I would consult the wiki / google before attempting.

I personally am a lazy coward and tend to stick to the things I already know -> clean install.

ubermensch00 · 2010-07-20 19:57:12

lol yeah. I'm often the same way. But I'm feeling a little more ambitious today.
Thanks for the help, the ncdu tool is very nice and simple.
Thanks for your time, I can handle it from here.

karol · 2010-07-20 19:59:47

http://wiki.archlinux.org/index.php/Com … y_Programs
Over and out.

Spacenick · 2010-07-30 15:44:14

I see how totally fluent you are in Linux based systems - but still.
Hope you know that you probably shouldn't be removing random files in / by hand even if you think, you don't need them, you probably do.
It would be a much better idea to look into your installed packages and use pacman to remove the ones you really don't need. Also you could try resizing your partitions from a live cd.
It's a little bit risky but usally works quite well these days.

Arch Linux

#1 2010-07-20 19:13:20

Filesystem size problem.

#2 2010-07-20 19:26:21

Re: Filesystem size problem.

#3 2010-07-20 19:28:59

Re: Filesystem size problem.

#4 2010-07-20 19:30:17

Re: Filesystem size problem.

#5 2010-07-20 19:32:21

Re: Filesystem size problem.

#6 2010-07-20 19:33:57

Re: Filesystem size problem.

#7 2010-07-20 19:38:38

Re: Filesystem size problem.

#8 2010-07-20 19:42:12

Re: Filesystem size problem.

#9 2010-07-20 19:43:42

Re: Filesystem size problem.

#10 2010-07-20 19:53:51

Re: Filesystem size problem.

#11 2010-07-20 19:56:03

Re: Filesystem size problem.

#12 2010-07-20 19:57:12

Re: Filesystem size problem.

#13 2010-07-20 19:59:47

Re: Filesystem size problem.

#14 2010-07-30 15:44:14

Re: Filesystem size problem.

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