On Mon, Mar 25, 2013 at 10:03:20PM -0600, lonat_fr...@163.com wrote:
Hi everyone,
I have used btrfs as a work partition with compression=zlib. The
compression ratio is not satisfied to me.
So you probably want compress-force=zlib. With just compress we will bail out
of the compression
On Tue, Mar 26, 2013 at 10:27:34AM -0600, yiletian wrote:
Yes, I use compress-force=zlib for my partition.
Consider this scenario.
We first write a file with size of 256KB. Assume all data is compressed to
128KB size,
btrfs create a extent item in extent-tree to record the 128KB disk
I think the biggest problem is how we can reclaim the space when the extent is
a compressed one.
In this case, we may need to read and decompress data in the extent, and then
compress the valid range to generate a new extent.
Is this process a performance killer?
At 2013-03-27 02:03:57,Josef
