no free space left on device /

[samiel60]

After today updating, I met a strange trouble.
I updated and, after, I continued to work. I'd only Writer open,
no other programs. Suddenly, it appeared a message:

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no free space left on device /

and it was to me impossible to accomplish any operation.
The root partition was full, I don't know why and how.
I don't know which other information do u need
to help me to understand what happened...

thanx
s

[ajgringo619]

How are your partitions setup?

[samiel60]

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Disk /dev/sda: 931,5 GiB, 1000204886016 bytes, 1953525168 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes
Disklabel type: gpt
Disk identifier: AAAE3112-9564-47DE-986D-B14B919217A5

Dispositivo   Start       Fine    Settori   Size Tipo
/dev/sda1      2048    1023999    1021952   499M Windows recovery environment
/dev/sda2   1024000    1228799     204800   100M EFI System
/dev/sda3   1228800    1261567      32768    16M Microsoft reserved
/dev/sda4   1261568 1953523711 1952262144 930,9G Microsoft basic data


Disk /dev/sdc: 1,8 TiB, 2000398934016 bytes, 3907029168 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disklabel type: gpt
Disk identifier: AB4206A9-64A3-41FE-94B0-B73763851742

Dispositivo      Start       Fine    Settori  Size Tipo
/dev/sdc1         2048  524290047  524288000  250G Linux filesystem
/dev/sdc2    524290048  622594047   98304000 46,9G Linux filesystem
/dev/sdc3    622594048  720898047   98304000 46,9G Linux filesystem
/dev/sdc4    720898048 1507330047  786432000  375G Linux filesystem
/dev/sdc5   1507330048 3866626047 2359296000  1,1T Linux filesystem
/dev/sdc6   3866626048 3907028991   40402944 19,3G Linux swap

[ajgringo619]

Sorry, should have asked this, too: file systems, please?

[samiel60]

all ext4

/ is on sdb (a ssd)
all other partition on sdc

[ajgringo619]

Doh! I meant the sizes - don't worry, 50 more questions before I figure out wth I really want...

[samiel60]

/ is on sdb

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Disk /dev/sdb: 59,6 GiB, 64023257088 bytes, 125045424 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disklabel type: gpt
Disk identifier: 68927FED-41FB-42A2-9252-55319CD4A811

normally

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root@darkstar:~# df -h /dev/sdb1
File system     Dim. Used Available Usage% Mounted on
/dev/sdb1        59G     18G      38G    32%   /

[Flemur]

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no free space left on device /

This guy had the same problem: that message but df shows free space:
https://medium.com/@aronasorman/the-cas ... ed3816ae23

He ran

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sudo find /

and waited until it slowed down indicating millions of inodes in a directory, "/var/lib/docker" created by a program "docker".

[samiel60]

Thanx for your answer. I'd no /var/lib/docker
and I was not able to idenfy the dir full, for it was impossible to me
open a console. It would be interesting and useful to understand
the reason or cause which suddenly creates so many files
in any /var/ subdirectory...

[Pierre]

First off - - Don't Turn Off this machine .. . that will only exasperate the issue.

try running Disk Useage Analyser - - look under System Tools - - can you find it ?
- paste a copy of what is is showing - - back here

if you can't find it - - install it from Package Manager AKA synaptic
- - it's called "baobab"

and whilst you are using synaptic - - look at how many system kernels, that are currently installed,
- with a view to removal of some of the older kernels.

[samiel60]

Sorry, I formatted and reinstall to save time,
for I cannot stay for some days without pc.
I realized that the big quantity of files was in /var,
but it was to me impossible to launch any program.
If it will happen another time (I hope not!)
I'll try to identify better the cause of that trouble
thanx
s

PS
in any case I had only 2 kernels installed

[Flemur]

I'll try to identify better the cause of that trouble

This will show you the # of files in /var, so you can keep an eye on them (the guy I mentioned above had 58 million or so):

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sudo find /var | wc -l

I get "11259" from a pretty clean setup.
(wc -l = count the lines of output)

[samiel60]

I found the cause, for I had still the trouble;
/var/log/uvcdynctrl-udev.log
grows in a few minuts and becames so many GB large
until fills up the partition, but why ???

[ajgringo619]

I found the cause, for I had still the trouble;
/var/log/uvcdynctrl-udev.log
grows in a few minuts and becames so many GB large
until fills up the partition, but why ???

I found multiple bug reports on this, both in Debian and Ubuntu forums; here are a couple of links:
https://askubuntu.com/questions/766263/ ... y-harddisk
https://askubuntu.com/questions/177312/ ... ile#177373

Do you have a webcam installed?

[samiel60]

Yes, I've. And infact I had the same trouble in Debian...

[samiel60]

and removing only uvcdynctrl (and uvcdynctrl-data)?