Managing your UNIX disk space and quotas

All staff and current students at the University of Manitoba have access to diskspace on the UNIX/Linux system.  This space can be accessed directly by logging in to our UNIX system with your UMnetID either on a workstation in a lab or remotely.  It can also be used as space for ftp transfers.
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What Space is available

The following spaces are available for your coursework/research:

Home directory
This is the best space to use if you have modest needs for space because it is backed up so you can request restores of accidentally deleted data (We have daily backups from the last month, and monthly backups from the last year).  Furthermore, it is not  cleaned up/archived by us until after you leave the University.  You can determine the location of this storage space by logging in to UNIX/Linux and typing "echo $HOME".  The disk quota section below shows you how to check your quota on this filesystem.  If you find that you need more space in your home directory you can request modest quota increases by emailing The IST Help & Solutions Centre.

 /usr/local/tmp
This space is automatically cleaned up every Monday at approximately 4 AM.  It is useful as a temporary scratch space for compute jobs or transferring large amounts of data.  It is not backed
up so no restores are available.  If you intend to use this space, please create a subdirectory named for your UMnetID in this filesystem and place your files there.  For example, at a unix prompt type:

  $ mkdir /usr/local/tmp/<your_umnetid>This creates a subdirectory of that name for your calculations/storage needs.

 /local/workspace1/<your_umnetid>
Like /usr/local/tmp, this directory is useful for scratch space for compute jobs or transferring large amounts of data.  However, instead of weekly, this space is only cleaned up once your CCL account has expired. This makes this space useful for course work/research storage needs that data retention longer than a week.  It is not backed up so no restores are available.  To use this space, log on to the UNIX/Linux system and claim your space by typing:

  $ workspacetool claim
Your default quota on this system is 5 GB although you can request additional space by emailing the IST Service Desk

Special Requests
For groups of researchers with special data storage needs (eg very large, or collaborative workspaces) please contact us and we will try find a way to accommodate you.

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Disk Quotas

Home directory diskspace is managed by assigning "quota"s to each account. There are two types of quota, "soft quota" and a larger "hard quota".  If you exceed the soft quota, warning messages will
be displayed indicating this during login.  If this happens it is important for you to cleanup data or request more quota because if you hit your "hard quota" irregular behavior can occur.  You can check
your usage and your home quota at any time by typing "quota -v" at a UNIX prompt.  The numbers shown are in kilobytes.

You can check your /local/workspace1/<username> quota by changing to this directory and then typing "quota -v".  For example:

mira% cd /local/workspace1/<username>mira% quota -vAt times it is useful to know how much space is left in a filesystem because it is possible (although unlikely) that some other user has  completely filled up the filesystem.  This can be done using the "df" command. 

For example:

    mira% df -h /usr/local/tmp
The "du" command shows you how much data is stored in each subdirectory.  This can be helpful if you are trying to locate which directories have large usage so you can clean them up to get under quota. 

You can run it like this:

mira% du -sh /path/to/directoryIt is sometimes useful to make a software package use scratch space for its temporary storage requirements. For example, `SAS' can be instructed to use this space for its work library:
  

mira% sas -work /usr/local/tmp/<yourusername>

 


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