09-19-2018
How to manage disk usage in Ubuntu?
Hello,
I have been running under ubuntu 14.04 trusty and 18.04 bionic.
What I wonder is about:
* how to stop all process in case hdd capacity is almost full and create space for system files
* if possible, to prevent filesystem to write anything into hdd when there is such a risk
* if there is any script that can manage/control the disk usage and protect the system.
* if possible to fix via recovery mode when disk usage is at 100%
Many thanks
Boris
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LEARN ABOUT DEBIAN
stress
STRESS(1) User Commands STRESS(1)
NAME
stress - tool to impose load on and stress test systems
SYNOPSIS
stress [OPTION [ARG]] ...
DESCRIPTION
`stress' imposes certain types of compute stress on your system
-?, --help
show this help statement
--version
show version statement
-v, --verbose
be verbose
-q, --quiet
be quiet
-n, --dry-run
show what would have been done
-t, --timeout N
timeout after N seconds
--backoff N
wait factor of N microseconds before work starts
-c, --cpu N
spawn N workers spinning on sqrt()
-i, --io N
spawn N workers spinning on sync()
-m, --vm N
spawn N workers spinning on malloc()/free()
--vm-bytes B
malloc B bytes per vm worker (default is 256MB)
--vm-stride B
touch a byte every B bytes (default is 4096)
--vm-hang N
sleep N secs before free (default is none, 0 is inf)
--vm-keep
redirty memory instead of freeing and reallocating
-d, --hdd N
spawn N workers spinning on write()/unlink()
--hdd-bytes B
write B bytes per hdd worker (default is 1GB)
--hdd-noclean
do not unlink files created by hdd workers
Example: stress --cpu 8 --io 4 --vm 2 --vm-bytes 128M --timeout 10s
Note: Numbers may be suffixed with s,m,h,d,y (time) or B,K,M,G (size).
SEE ALSO
The full documentation for stress is maintained as a Texinfo manual. If the info and stress programs are properly installed at your site,
the command
info stress
should give you access to the complete manual.
stress 1.0.1 August 2009 STRESS(1)