The disk quota gives an upper limit to the amount of disk space you may use in your home directory. You must be careful not to exceed your quota, or you may lose data.
To determine your disk quota, and how much of it you have used up, execute the following command on meta:
quota
If you ever exceed your home directory quota, you will not be able to
save any more files in your account. If you do not keep an eye on your
quota, it may fill up just before some critical program you are running
needs to save data, and it will not be able to.There are a number of ways to reduce the amount of space you use. One way is to backup to tape any files you will not be needing in the near future. Another is to compress files that you do not use very frequently. Periodically you should delete any backup or temporary files in your account; the command:
find . \( -name '*.ps' -o -name '*.dvi' -o -name '*.log' -o -name '*.aux' \) -exec rm -i {} \;
will do this by automatically finding all these files in the current directory
and asking you if you want to delete them.
Project space on our RAID5 fileserver Meta is being assigned by group. Please see Luis Cruz for more information regarding how to obtain project space and conditions of use.
The filesystems are:
/project/meta (72 GB) /project/meta2 (100 GB) /project/meta3 (100 GB)
Please do not use scratch space anymore for anything other than very temporary data storage. Instead, migrate to meta. Meta is running RAID so the data is able to be saved if there are disk failures. Also, please do not use the local /tmp directories; they only provide little space and are essential for the function of some system commands, e.g., compilers. The 42GB of scratch filesystems are:
/scratch/seldon (2GB) /scratch/seldon2 (5.5GB) /scratch/macduff (5.5GB - FOR SYSTEM USE) /scratch/daneel (5.5GB) /scratch/trantor (5.5GB) /scratch/bailey (5.5GB) /scratch/linda (18G)
The scratch space will be periodically cleaned so that it can assume its proper role as temporary space.
You may request space on these filesystems by sending mail to help@polymer.bu.edu. Note that the temporary filesystems are not backed-up.
To check space usage, go to the desired machine and do the following (e.g.):
% quota -g group
where group is any of alzheimr, surf, perc, protein, etc.
It is important to remember that space on these filesystems is quite full, so be sure to check your quotas because you are sharing the space not only with your fellow group members, but with other groups. You can check the total disk usage by logging on to the machine containing the dist space and typing
df -kthis will tell you, for example, the available free space in a particular file partition. Dist spaces will show up as /tmp_dist in the df listing.
For users in need of large repositories for data storage and who run jobs on the BU supercomputer facilities, you can consult Luis Cruz-Cruz about getting an account at the University SuperComputer facility.