Description

The articles explain the behaviour of Disk 1 high Utilisation when excessive OS Image file copy is performed to /var directory during upgrade.  

Symptoms

During the issue time ‘show system storage’ will fetch the below output with avail space in -ve for /.mount/packages partition

 
/dev/md1.uzip      1.8G    1.6G   -13.2M   101% /.mount/packages     

 

Routing Engine 0 REV 05   740-031116   9009096108        RE-S-1800x4

  ada0  30533 MB  UGB94ARF32H0S3-KC    UNIGEN-478612-0   Disk 1

  ada1   3896 MB  VRFCF14096DIHK1      VM4096MB 5226     Compact Flash

Solution

Collect the output as per the below:

Show system storage
Start shell user root
Password:
%df -h

Check for the higher file size with the below command from shell:

User@RE0> start shell user root
Password:
User@RE0%:~ # find / -size +100000

Sample Output :

User@RE0%:~ # find / -size +100000
/var/db/alarm.db
/var/db/transport.db
/var/db/alarm.db+
/var/log/RSVP
/var/log/fpc0/20231026_134939/var-log-20231026_134939.tar.gz
/var/log/fpc0/20231026_175052/var-log-20231026_175052.tar.gz
/var/tmp/junos-vmhost-install-mx-x86-64-22.3R2.12.tgz
/var/tmp/junos-vmhost-install-mx-x86-64-21.2R3-S3.5.tgz
/var/rundb/render.db
/packages/db/jfirmware-x86-32-21.2R3-S3.5/contents/contents.izo

User@RE0%:~ # rm /var/log/fpc0/20231026_134939/var-log-20231026_134939.tar.gz
User@RE0%:~ # rm /var/tmp/junos-vmhost-install-mx-x86-64-22.3R2.12.tgz
      
Perform a removal of large file size which are non-relevant and not in use.
Once some amount of space is freed.
Perform a request system reboot for the affected RE

Kindly Contact Support if still issue persist after the system reboot.
 

Modification History

Initial Draft -30/12/2023

Related Information

%df -h command – Shows the amount of disk space used and available on Linux file systems.

%du -h command – Display the amount of disk space used by the specified files and for each

subdirectory.

%df -a shows the file system's complete disk usage even if the Available field is 0

%df -T shows the disk usage along with each block's filesystem type (e.g., xfs, ext2, ext3, btrfs,etc.)

%df -i shows used and free inodes