Gentoo Logo
Gentoo Spaceship




Note: Due to technical difficulties, the Archives are currently not up to date. GMANE provides an alternative service for most mailing lists.
c.f. bug 424647
List Archive: gentoo-dev
Navigation:
Lists: gentoo-dev: < Prev By Thread Next > < Prev By Date Next >
Headers:
To: gentoo-dev@g.o
From: Doug Goldstein <cardoe@g.o>
Subject: Re: preserve_old_lib and I'm even more lazy
Date: Sat, 25 Feb 2012 09:02:02 -0600
On Fri, Feb 24, 2012 at 6:31 PM, Richard Yao <ryao@...> wrote:
>> Am I the only paranoid person who moves them rather than unlinking
>> them?  Oh, if only btrfs were stable...
>
> Is this a reference to snapshots? You can use ZFS for those. The
> kernel modules are only available in the form of 9999 ebuilds right
> now, but they your data should be safe unless you go out of your way
> to break things (e.g. putting the ZIL/SLOG on a tmpfs). Alternatively,
> there is XFS, which I believe also supports snapshots.
>

FWIW, I'll second the ZFS > btrfs suggestion. I understand people want
to go btrfs cause its the Linux way but in real world usage, its
performance is abysmal We've had over a dozen developers switch to
btrfs in my group on their various environments (OpenSUSE, Fedora, own
rolled distros) and they've all gone back to their previous filesystem
of choice.

Simplest test I can suggest to btrfs users to attempt is the following:

dd if=/dev/zero of=/mnt/btrfs/file bs=4k count=100 oflag=direct
dd if=/dev/zero of=/mnt/ext4/file bs=4k count=100 oflag=direct

It will emulate the similar operation to an fdatasync().

-- 
Doug Goldstein


Replies:
Re: preserve_old_lib and I'm even more lazy
-- Rich Freeman
References:
preserve_old_lib and I'm even more lazy
-- Paweł Hajdan, Jr.
Re: preserve_old_lib and I'm even more lazy
-- Alexis Ballier
Re: preserve_old_lib and I'm even more lazy
-- Richard Yao
Navigation:
Lists: gentoo-dev: < Prev By Thread Next > < Prev By Date Next >
Previous by thread:
Re: preserve_old_lib and I'm even more lazy
Next by thread:
Re: preserve_old_lib and I'm even more lazy
Previous by date:
Re: RFC: Adding CCASFLAGS to filter-flags() in flag-o-matic.eclass
Next by date:
Re: github <> g.o.g.o


Updated Jun 29, 2012

Summary: Archive of the gentoo-dev mailing list.

Donate to support our development efforts.

Copyright 2001-2013 Gentoo Foundation, Inc. Questions, Comments? Contact us.