[nylug-talk] Filesystems that Support Transparent Compression?

[Sunny Dubey]

Am Dienstag, 11. Juli 2006 18:35 schrieb alex at pilosoft.com:
> Example: You have 20GB file, compressed into 10G. Now, you mmap'd it, and
> need to fetch byte #44444444. To do that, you need to uncompress entire
> file. Now, you modify a byte there. To write that, you need to recompress
> entire file. Etc.

That seems wrong.  Knoppix compresses much information and uses some 
interesting tricks to allow people to 'write' data to the ROM ...  

I think there is a difference between file-by-file compression, and entire FS 
compression.

Additionally, (as I suggested a few days ago offline to him) there exists 
great read-only solutions SqashFS if all that XML data is static and never 
changing.  We use it on our live distro, works dandy.

JFFS2 supports dynamic re/compression but I don't know if its geared towards 
disk usage at all.  (I've never ever looked into it.)

-- 
Sunny Dubey

  mail: sunny at opencurve.org
  tele: 212.333.3542