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backups

Backups

razor and trestles clusters /home areas are automatically and independently backed up each Sunday morning if they fit the size criteria (<150 GB). Each cluster home area is only backed up if size is less than 150 GB (150 million KB). This backup limit is independent of any quota.

/scratch and /storage areas have no backup whatsoever. Because of space constraints on razor GPFS, we are no longer able to keep snapshots.

To find the size of your /home directory, on trestles, example size is 2,359,064 KB or 2.3 GB.

rfeynman:tres-l2 $ du -skD ~
2359064	/home/rfeynman

On razor (lines truncated for readability). /home space is gpfs1 KB, which should be less than 150,000,000, and is 10,170,080 in the example. This also shows your GPFS quota status for /home and /storage (gpfs2). /scratch is the first, filesystem gpfs, and has no quotas.

rfeynman:razor-l3 $ /usr/lpp/mmfs/bin/mmlsquota -u rfeynman
                         Block Limits                                   
Filesystem type             KB      quota      limit   in_doubt    grace
gpfs       USR         no limits                                    

                         Block Limits                                    
Filesystem type             KB      quota      limit   in_doubt    grace 
gpfs1      USR        10170080   83886080   93886464      60416     none 

                         Block Limits                                    
Filesystem type             KB      quota      limit   in_doubt    grace 
gpfs2      USR       242768288 1677721600 1677771776          0     none 

If your home area is too large to backup, you can move less important files to the corresponding /storage area, see moving_data.

backups.txt · Last modified: 2016/11/10 14:37 by root