From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from len.romanrm.net ([91.229.20.24]:59210 "EHLO len.romanrm.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751534AbaANVAZ (ORCPT ); Tue, 14 Jan 2014 16:00:25 -0500 Date: Wed, 15 Jan 2014 03:00:21 +0600 From: Roman Mamedov To: george@chinilu.com Cc: Chris Murphy , Btrfs BTRFS Subject: Re: How does btrfs handle bad blocks in raid1? Message-ID: <20140115030021.0b001eeb@natsu> In-Reply-To: <52D59E28.7010200@chinilu.com> References: <201401100106.s0A16CNd016476@atl4mhib27.myregisteredsite.com> <52CF4D5D.2010709@chinilu.com> <486C0640-409D-4636-858C-84A679C0AF4E@colorremedies.com> <52D59E28.7010200@chinilu.com> Mime-Version: 1.0 Content-Type: multipart/signed; micalg=PGP-SHA1; boundary="Sig_/L4Py3.r8fAce/pfFfQ866Qv"; protocol="application/pgp-signature" Sender: linux-btrfs-owner@vger.kernel.org List-ID: --Sig_/L4Py3.r8fAce/pfFfQ866Qv Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: quoted-printable On Tue, 14 Jan 2014 12:29:28 -0800 George Mitchell wrote: > what we are lacking at this point is a SMART capability to provide=20 > visual notifications to the user when any hard drive starts to seriously= =20 > degrade or suddenly fails. You can configure smartd (from smartmontools) to send you E-Mails on any change of the monitored SMART attributes. > If SMART were capable of launching pop up warnings And I'm sure there are a number of GUI tools out there for just about any O= S, which can do just that > btrfs would not have to worry so much about arrays going simplex undetect= ed. That said, do not fall into a false sense of security relying on proprietar= y, barely if ever updated after the device has been shipped, and often very peculiar-behaving SMART routines inside the black-box HDD firmware as your most important data safeguard. Of course SMART must be checked and monitored, but don't delude yourself in= to thinking it will always warn you of anything going wrong well in advance of failure, or even at all. --=20 With respect, Roman --Sig_/L4Py3.r8fAce/pfFfQ866Qv Content-Type: application/pgp-signature; name=signature.asc Content-Disposition: attachment; filename=signature.asc -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.12 (GNU/Linux) iEYEARECAAYFAlLVpWUACgkQTLKSvz+PZwgpzwCfakrFZNJk/0f00TR7PSsm+gtD oksAoJYwYyko5YmNhNzukJgbKICR6O5m =+UJ0 -----END PGP SIGNATURE----- --Sig_/L4Py3.r8fAce/pfFfQ866Qv--