I am using Time Machine to back up my MacBook Pro on a Samba drive connected to a Linux machine, per this hint. The thing is that when you use Time Machine, it will fill up your disk with backups. However, since I am using a shared networked drive, I wanted to leave free disk space for other users and keep my sysadmin happy. So, here is how you can prevent Time Machine from filling up your networked disk. First, when you use Time Machine with a SMB disk, it creates a .sparsebundle disk image to put the backup data into. The disk image has a capacity of 2.75 TB. Since my SMB disk has only 1.5 TB of capacity, the disk image shows that 1.25TB is used and 1.5TB is available. The trick is to create another sparsebundle disk image of a given capacity (I used 300GB) on the SMB disk. Use 'Mac OS Extend...

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