With WD EARS disks, since they do not expose the 4K size to the OS,
there is not much to be gained with their internal 4k sector size.
Performance and reliability with these is also poor. The fixed, large
TLER defaults cause constant dropouts, and I have found from experience
that these disks don't work well with ZFS.
Mark.
On 24/11/2010 7:08 a.m., Jesus Cea wrote:
-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1
On 23/11/10 18:55, Maurilio Longo wrote:
mauri...@rsync:~$ ls -lR /nas/test/snv_143/ | wc -l
175184
At 2Kb, mean, per file, we have 360Mb, more or less, but here we go from
2,73Gb to 3,81 so it is more than 1Gb, or, nearly 8Kb per file!
If the znodes are 512 bytes too, they waste 3584 in a 4KB harddisk. So
adding both you have extra 5632 bytes wasted per file.
Do you use the same blocksize?. Same compression?.
Anyway, I think that ZFS will try to align everything to 4KB, so it is
going to waste space for every on-disk datastructure.
- --
Jesus Cea Avion _/_/ _/_/_/ _/_/_/
j...@jcea.es - http://www.jcea.es/ _/_/ _/_/ _/_/ _/_/ _/_/
jabber / xmpp:j...@jabber.org _/_/ _/_/ _/_/_/_/_/
. _/_/ _/_/ _/_/ _/_/ _/_/
"Things are not so easy" _/_/ _/_/ _/_/ _/_/ _/_/ _/_/
"My name is Dump, Core Dump" _/_/_/ _/_/_/ _/_/ _/_/
"El amor es poner tu felicidad en la felicidad de otro" - Leibniz
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.4.10 (GNU/Linux)
Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org/
iQCVAwUBTOwDBZlgi5GaxT1NAQJP5gQAi6FG5kJXYCQ2EdeRD7s8ZOcwqzH6c/zY
k84N8yuo4iPom7mFVDYKPO/mgIAS5+OqRcP0DLmbkxYyOvEWuCG7Ih7LbYWhjQxB
PTWIBtYfyYehwwiH+izaSCjKOu1L9TKfUxhLCnLnevmfKc9qdH5SZ1tH7qTCnAYY
2IvP427j6KA=
=pe9v
-----END PGP SIGNATURE-----
_______________________________________________
OpenIndiana-discuss mailing list
OpenIndiana-discuss@openindiana.org
http://openindiana.org/mailman/listinfo/openindiana-discuss
_______________________________________________
OpenIndiana-discuss mailing list
OpenIndiana-discuss@openindiana.org
http://openindiana.org/mailman/listinfo/openindiana-discuss
