From mboxrd@z Thu Jan 1 00:00:00 1970 From: Roman Mamedov Subject: Re: Recommendations for RAID setup needed Date: Tue, 15 Sep 2015 23:57:31 +0500 Message-ID: <20150915235731.5fcc5f79@natsu> References: <55F85E9F.1070100@youngman.org.uk> Mime-Version: 1.0 Content-Type: multipart/signed; micalg=PGP-SHA1; boundary="Sig_/AOpGwkPk=acgfUDkNeRVPrA"; protocol="application/pgp-signature" Return-path: In-Reply-To: <55F85E9F.1070100@youngman.org.uk> Sender: linux-raid-owner@vger.kernel.org To: Wols Lists Cc: Alex , Linux RAID List-Id: linux-raid.ids --Sig_/AOpGwkPk=acgfUDkNeRVPrA Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: quoted-printable On Tue, 15 Sep 2015 19:08:31 +0100 Wols Lists wrote: > Throwing something completely different into the mix, how about > considering btrfs? It's not 100% solid yet, so you need to be careful > with it, but if you back up with rsync and the "in place" option, it'll > give you full backups for the cost of incremental. However its RAID5/6 is not ready yet and even RAID1/10 lack some important features compared to mdadm, not to mention performance optimizations. On the other hand I have a great success running Btrfs without utilizing its own RAID features, but as a regular filesystem on top of MD RAID5/6. > What you MUST do is KEEP AN EYE ON DISK SPACE! The main failure mode for > btrfs I'm aware of, is that a disk full can cause a fatal error. As in > "I've just trashed the disk - it's 'format c:' time". So if you hit 80% > or so, alarm bells should be ringing. Very loud. And this is just an absolute deranged baseless FUD today, or maybe something that might have been true about 5 years ago -- eons in Btrfs development. --=20 With respect, Roman --Sig_/AOpGwkPk=acgfUDkNeRVPrA Content-Type: application/pgp-signature; name=signature.asc Content-Disposition: attachment; filename=signature.asc -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.12 (GNU/Linux) iEYEARECAAYFAlX4ahsACgkQTLKSvz+PZwiXPgCfflC3QOM84+oC8Pz3CnQXFiko 0/4AniNaEjRNDKuD2vekDciS2jZY3JOK =hW5j -----END PGP SIGNATURE----- --Sig_/AOpGwkPk=acgfUDkNeRVPrA--