From: Austin S Hemmelgarn <ahferroin7@gmail.com>
To: Tobias Holst <tobby@tobby.eu>
Cc: lists@xunil.at, linux-btrfs@vger.kernel.org
Subject: Re: general thoughts and questions + general and RAID5/6 stability?
Date: Tue, 23 Sep 2014 10:47:15 -0400 [thread overview]
Message-ID: <542187F3.7090603@gmail.com> (raw)
In-Reply-To: <CAGwxe4i2gQXSPiBGXbUKWid3o1tmD_+YtbOj=GQ11vzGx8CuTw@mail.gmail.com>
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On 2014-09-23 10:23, Tobias Holst wrote:
> If it is unknown, which of these options have been used at btrfs
> creation time - is it possible to check the state of these options
> afterwards on a mounted or unmounted filesystem?
>
>
> 2014-09-23 15:38 GMT+02:00 Austin S Hemmelgarn <ahferroin7@gmail.com
> <mailto:ahferroin7@gmail.com>>:
>
> Well, running 'mkfs.btrfs -O list-all' with 3.16 btrfs-progs gives
> the following list of features:
> mixed-bg - mixed data and metadata block groups
> extref - increased hard-link limit per file to 65536
> raid56 - raid56 extended format
> skinny-metadata - reduced size metadata extent refs
> no-holes - no explicit hole extents for files
>
I don't think there is a specific tool for doing this, but some of them
do show up in dmesg, for example skinny-metadata shows up as a mention
of the FS having skinny extents.
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next prev parent reply other threads:[~2014-09-23 14:47 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-09-19 20:50 general thoughts and questions + general and RAID5/6 stability? William Hanson
2014-09-20 9:32 ` Duncan
2014-09-22 20:51 ` Stefan G. Weichinger
2014-09-23 12:08 ` Austin S Hemmelgarn
2014-09-23 13:06 ` Stefan G. Weichinger
2014-09-23 13:38 ` Austin S Hemmelgarn
2014-09-23 13:51 ` Stefan G. Weichinger
2014-09-23 14:24 ` Tobias Holst
2014-09-24 1:08 ` Qu Wenruo
[not found] ` <CAGwxe4i2gQXSPiBGXbUKWid3o1tmD_+YtbOj=GQ11vzGx8CuTw@mail.gmail.com>
2014-09-23 14:47 ` Austin S Hemmelgarn [this message]
2014-09-23 15:25 ` Kyle Gates
2014-09-25 7:15 ` Stefan G. Weichinger
-- strict thread matches above, loose matches on Subject: below --
2014-08-31 4:02 Christoph Anton Mitterer
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