Creating ext3 on multipatch device

Mythos · l33t Joined: 02 May 2004 Posts: 953 Location: Portugal

Hi Everyone,

What is the best option to create a file system on a multipath device.

create directly on device:
mkfs.ext3 /dev/dm-2

or create a partition with fdisk and than create filesystem?

I am asking this because i have create directly on device and the performance is much better this way.
What are the risks by creating ext3 directly on device?

Thank you in advanced.
Best Regards,
SM
_________________
Best Regards,
Sérgio Henrique
Linux dune 3.0.6-gentoo #1 SMP Thu Oct 27 16:47:29 WEST 2011 x86_64 Intel(R) Core(TM)2 Duo CPU T7500 @ 2.20GHz GenuineIntel GNU/Linux

Hu · Moderator Joined: 06 Mar 2007 Posts: 21628

Creating the filesystem on the device means that you can only put one filesystem on it. If you used partitions, you can have multiple filesystems, one per partition. If you need multiple filesystems, LVM is often a better choice than partitions.

Mythos · l33t Joined: 02 May 2004 Posts: 953 Location: Portugal

No need for LVM. Only one filesystem.
My question is why i notice better performance using filesystem directly on device.
Thank You
_________________
Best Regards,
Sérgio Henrique
Linux dune 3.0.6-gentoo #1 SMP Thu Oct 27 16:47:29 WEST 2011 x86_64 Intel(R) Core(TM)2 Duo CPU T7500 @ 2.20GHz GenuineIntel GNU/Linux

Ant P. · Watchman Joined: 18 Apr 2009 Posts: 6920

Maybe your partitions weren't aligned correctly. Is this a 4k-sectors drive?

Mythos · l33t Joined: 02 May 2004 Posts: 953 Location: Portugal