From: Duncan <1i5t5.duncan@cox.net>
To: linux-btrfs@vger.kernel.org
Subject: Re: Using Btrfs on single drives
Date: Sat, 14 Nov 2015 16:35:53 +0000 (UTC) [thread overview]
Message-ID: <pan$cd520$db285952$21230473$ba4e939d@cox.net> (raw)
In-Reply-To: 56471661.6020101@libero.it
Goffredo Baroncelli posted on Sat, 14 Nov 2015 12:09:21 +0100 as
excerpted:
> On 2015-11-14 11:43, audio muze wrote:
>> I can turn checksumming off given it's of no utility where a Btrfs
>> volume is comprised of a single device only?
>
> The checksums are used to detect a data corruption; in case of a
> btrfs-raid, the checksums are used *also* to pick the good copy.
And yes, you can turn them off (for data, not metadata), using the
nodatasum mount option.
Tho personally, I prefer raid1, not just for the normal raid1 capacities,
but for the ability to scrub corrupt data as well, and thus would never
turn off checksumming here (except possibly in the context of nocow, for
vm images, etc).
--
Duncan - List replies preferred. No HTML msgs.
"Every nonfree program has a lord, a master --
and if you use the program, he is your master." Richard Stallman
next prev parent reply other threads:[~2015-11-14 16:36 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-11-14 10:43 Using Btrfs on single drives audio muze
2015-11-14 11:09 ` Goffredo Baroncelli
2015-11-14 16:35 ` Duncan [this message]
2015-11-15 3:27 ` audio muze
2015-11-15 4:01 ` Duncan
2015-11-15 6:30 ` Marc Joliet
2015-11-25 7:20 ` Russell Coker
2015-11-26 16:27 ` Duncan
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