[mythtv-users] Issues with shared NFS media store

David Brodbeck gull at gull.us
Sat Dec 1 20:50:14 UTC 2007

On Dec 1, 2007, at 7:13 AM, Scott wrote:
> All filesystems reserve some space that isn't available to the user.
> The "Total" column of df shows the available + used + reserved. The
> amount of space reserved can be calculated by reserved = total - avail
> - used. The reserved space is generally used for filesystem metadata,
> backup blocks, etc. On some filesystems you can tune this. For
> example, "mke2fs -m 1" reserves only 1% instead of the default 5% of
> the file system for super-user. On a multi-terabyte filesystem this
> can have a huge impact.

This reserved space is also why you can occasionally get a filesystem  
that shows up in "df" as being over 100% full, with a negative "space  
available" number.

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