From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mailgw-01.dd24.net ([193.46.215.41]:45963 "EHLO mailgw-01.dd24.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754306AbbK0RTL (ORCPT ); Fri, 27 Nov 2015 12:19:11 -0500 Message-ID: <1448644747.11377.45.camel@scientia.net> Subject: Re: How to detect / notify when a raid drive fails? From: Christoph Anton Mitterer To: linux-btrfs@vger.kernel.org, Anand Jain Date: Fri, 27 Nov 2015 18:19:07 +0100 In-Reply-To: <56581F87.9080409@oracle.com> References: <1448601297.4093478.451242913.1CEE0D6D@webmail.messagingengine.com> <56581F87.9080409@oracle.com> Content-Type: multipart/signed; micalg="sha-512"; protocol="application/x-pkcs7-signature"; boundary="=-a1/xfOJZWs2aO9N3T4RG" Mime-Version: 1.0 Sender: linux-btrfs-owner@vger.kernel.org List-ID: --=-a1/xfOJZWs2aO9N3T4RG Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable On Fri, 2015-11-27 at 17:16 +0800, Anand Jain wrote: > =C2=A0 I understand as a user, a full md/lvm set of features are importan= t > =C2=A0 to begin operations using btrfs and we don't have it yet. I have t= o > =C2=A0 blame it on the priority list. What's would be especially nice from the admin side, would be something like /proc/mdstat, which centrally gives information about the health of your RAID. It can/should of course be more than just "OK" / "not OK"... information about which devices are in which state, whether a rebuild/reconstruction/scrub is going on, etc. pp. Maybe even details of properties like chunk sizes (as far as these apply to btrfs). Having a dedicated monitoring process... well nice to have, but something like mdstat is, always there, doesn't need special userland tools and can easily used by 3rd party stuff like Icinga/Nagios check_raid. I think the keywords here are human readable + parseable... so maybe even two files. Cheers, Chris. --=-a1/xfOJZWs2aO9N3T4RG Content-Type: application/x-pkcs7-signature; name="smime.p7s" Content-Disposition: attachment; filename="smime.p7s" Content-Transfer-Encoding: base64 MIAGCSqGSIb3DQEHAqCAMIACAQExDzANBglghkgBZQMEAgMFADCABgkqhkiG9w0BBwEAAKCCEZIw ggW/MIIDp6ADAgECAgMCOakwDQYJKoZIhvcNAQENBQAwVDEUMBIGA1UEChMLQ0FjZXJ0IEluYy4x HjAcBgNVBAsTFWh0dHA6Ly93d3cuQ0FjZXJ0Lm9yZzEcMBoGA1UEAxMTQ0FjZXJ0IENsYXNzIDMg Um9vdDAeFw0xNDA2MTIxNjM2MThaFw0xNjA2MTExNjM2MThaMHwxITAfBgNVBAMTGENocmlzdG9w aCBBbnRvbiBNaXR0ZXJlcjEkMCIGCSqGSIb3DQEJARYVY2FsZXN0eW9Ac2NpZW50aWEubmV0MTEw LwYJKoZIhvcNAQkBFiJtYWlsQGNocmlzdG9waC5hbnRvbi5taXR0ZXJlci5uYW1lMIIBIjANBgkq hkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEA4phP/j9vT9dZT+k3ffHxvRWMOuzBnu5O3Fl4y2+WL7pL rfLiEhWzGXhHvjSqpt4vCNSdqy43453nnu8+hMb+uEtqSIL1AHU5eLhuDNVN9S4bt9E7nA2WKYBU LCUi/xCD/GL7ToyJNwhrhzcCZ7pXSc3xVqFoC4f6weU9ExhoEZQNRpTM0BFCOi4fRxvKFNnUYgjK hqy0Ta5H0Xx86mAp0Q4dxoD7mhI5iTF6TRkUheELxF24JCuAf04M89Cwft6DRH1FpJ3yvgW2B5U5 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