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Journal of nicholas (3034)

Saturday May 10, 2008
03:40 PM

Expanding disks for fun and profit

[ #36381 ]

$ df
Filesystem    1K-blocks     Used Available Capacity  Mounted on
/dev/disk0s2   33554432 29457252   3841180    89%    /
devfs               111      111         0   100%    /dev
fdesc                 1        1         0   100%    /dev
/dev/disk0s3   16777216 16046752    730464    96%    /Volumes/Stuff
map -hosts            0        0         0   100%    /net
map auto_home         0        0         0   100%    /home
$ df
Filesystem    1K-blocks     Used Available Capacity  Mounted on
/dev/disk0s2   33554432 29457252   3841180    89%    /
devfs               111      111         0   100%    /dev
fdesc                 1        1         0   100%    /dev
/dev/disk0s3   20840448 16046808   4793640    77%    /Volumes/Stuff
map -hosts            0        0         0   100%    /net
map auto_home         0        0         0   100%    /home

The first and the second df are truthfully one after the other on in the same shell, on the same machine, without rebooting. The only thing I did was to run Disk Utility, and drag the size of the partition to make it bigger. Live. Without dismounting the disk. Crazy.

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  • reiserfs and xfs can both grow online; jfs probably can too. if you think that's crazy, look at zfs. we interrupt this filesystem to BLOW YOUR MIND!