On Jan 18, 2010, at 10:55, Jesus Cea wrote:
zpool and zfs report different free space because zfs takes into
account
an internal reservation of 32MB or 1/64 of the capacity of the pool,
what is bigger.
So in a 2TB Harddisk, the reservation would be 32 gigabytes. Seems a
bit
excessive to me...
1/64 is ~1.5% according to my math.
Ext2/3 uses 5% by default for root's usage; 8% under FreeBSD for FFS.
Solaris (10) uses a bit more nuance for its UFS:
The default is ((64 Mbytes/partition size) * 100), rounded down to
the nearest integer and limited between 1% and 10%, inclusively.
32 GB may seem like a lot (and it can hold a lot of stuff), but it's
not what it used to be. :)
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