On Nov 9, 2009, at 9:15 PM, Ilya wrote:
Wow, this forum is great and uber-fast in response, appreciate the
responses, makes sense.
Nothing on TV tonight and all of my stress tests are passing :-)
Only, what does ZFS do to write to data? Let's say that you want to
write x blocks somewhere,
Wow, this forum is great and uber-fast in response, appreciate the responses,
makes sense.
Only, what does ZFS do to write to data? Let's say that you want to write x
blocks somewhere, is ZFS going to find a pointer to the space map of some
metaslab and then write there? Is it going to find a
On Nov 9, 2009, at 6:42 PM, Ilya wrote:
1. Is it true that because block sizes vary (in powers of 2 of
course) on each write that there will be very little internal
fragmentation?
Block size limit (aka recordsize) is in powers of 2. Block sizes are
as needed.
2. I came upon this statem
On Mon, 9 Nov 2009, Ilya wrote:
2. I came upon this statement in a forum post:
[i]"ZFS uses 128K data blocks by default whereas other filesystems
typically use 4K or 8K blocks. This naturally reduces the potential
for fragmentation by 32X over 4k blocks."[/i]
How is this true? I mean, if yo
1. Is it true that because block sizes vary (in powers of 2 of course) on each
write that there will be very little internal fragmentation?
2. I came upon this statement in a forum post:
[i]"ZFS uses 128K data blocks by default whereas other filesystems typically
use 4K or 8K blocks. This natur
