From mboxrd@z Thu Jan 1 00:00:00 1970 From: Roman Mamedov Subject: Re: RAID6 and crashes Date: Fri, 11 Jun 2010 00:57:43 +0600 Message-ID: <20100611005743.43664e5b@natsu> References: <4C1128C2.4020105@meetinghouse.net> Mime-Version: 1.0 Content-Type: multipart/signed; micalg=PGP-SHA1; boundary="Sig_//CsN40REJv38Xdty5W8aUbc"; protocol="application/pgp-signature" Return-path: In-Reply-To: <4C1128C2.4020105@meetinghouse.net> Sender: linux-raid-owner@vger.kernel.org To: linux-raid@vger.kernel.org List-Id: linux-raid.ids --Sig_//CsN40REJv38Xdty5W8aUbc Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: quoted-printable On Thu, 10 Jun 2010 14:02:42 -0400 Miles Fidelman wrote: =20 > 2. Are there any settings that can reduce the likelihood of a RAID=20 > volume being dirty after a crash? (The crash/reboot isn't that much of=20 > a problem - the several hours of degraded performance ARE a problem.) Do you currently have a write intent bitmap in the array? I think it can reduce the need for recovery by an order of magnitude in some cases. Check = man mdadm for --bitmap if you don't use it yet. --=20 With respect, Roman --Sig_//CsN40REJv38Xdty5W8aUbc Content-Type: application/pgp-signature; name=signature.asc Content-Disposition: attachment; filename=signature.asc -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.10 (GNU/Linux) iEYEARECAAYFAkwRNagACgkQTLKSvz+PZwh1/gCcD/SuGnf3heTzMc9AEe/ZxN3A EAoAoJWEf6FrdIpHYN1rTVeGcP+2Nolh =P86t -----END PGP SIGNATURE----- --Sig_//CsN40REJv38Xdty5W8aUbc--