Users are able to check quotas and usage for home and project directories 

as well as Panasas scratch directories using the iquota tool



What do quotas limit?  

These spaces all have a quota for usage AND number of files.  This is to prevent an errant processes from creating so many files it crashes the system or makes it unstable for others.  If you are getting 'out of space' or I/O errors, please verify you are not over quota in either space or number of files.


Please see this article for current file limit quotas on the various storage and directories.






Your user quota (home directory - /user/<username>): 

ccrkinit
NOTE: You will see "Enter OTP Token Value:" - Enter your password AND one-time token all in the same line here 

iquota 

or

iquota -p /user/username


Credential cache error:


If you see an error like:
'kinit: Unknown credential cache type while getting default ccache'

 

It is usually related to conda environments.  See this article for more details



Your group's shared project directory quota:

NOTE: You must specify the full path of your directory.  Not all project directories are in /projects/academic 


ccrkinit
NOTE: You will see "Enter OTP Token Value:" - Enter your password AND one-time token all in the same line here 


iquota -p /projects/academic/YourGroupName


HINT: Do not include the trailing slash in the directory name



 

Your group's shared Panasas scratch directory quota:


ccrkinit
NOTE: You will see "Enter OTP Token Value:" - Enter your password AND one-time token all in the same line here 


iquota -p /panasas/scratch/grp-YourGroupName


HINT: Do not include the trailing slash in the directory name


NOTE:  iquota only reports the total number of files for the group on the Panasas storage. If you're getting 'out of space' or I/O errors and the group is not over the file limit, it could be your individual limit has been reached. Please email CCR help to request a quota check.




iquota usage:


The iquota command has much more built into it than former versions.  Use iquota -h to see all the options.  

 

NOTE: You will need to get a kerberos key before running the command, with:  kinit

 

[ccruser@vortex1:~]$ iquota -h

NAME:

   iquota - displays CCR quotas


USAGE:

   iquota [global options] command [command options] [arguments...]


AUTHOR:

   Andrew E. Bruno <aebruno2@buffalo.edu>


COMMANDS:

   help, h  Shows a list of commands or help for one command


GLOBAL OPTIONS:

   --conf value, -c value                                Path to conf file

   --debug, -d                                           Print debug messages

   --user, -u                                            Print user quota

   --long, -l                                            display long listing

   --show-user value                                     Print user quota for specified user (super-user only)

   --show-group value                                    Print group quota for specified group

   -p value, --path value, -f value, --filesystem value  report quota for filesystem path

   --help, -h                                            show help





Calculating disk usage at the Linux command line:


Knowing your quota and how much of it you've used is helpful, but often we want to know where the disk usage is actually taking place.  You can run this command to calculate the total size of each file and sub-directory and then sort it from largest to smallest.  You will only be able to run this where you have permission to read files, so it's appropriate to run in your home directory:  /user/[ubit_username] or your group's project directory.


ncdu



There are many options for sorting as well as the ability to delete files within this interface: