From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mailgw-02.dd24.net ([193.46.215.43]:58214 "EHLO mailgw-02.dd24.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754032AbbKMDDR (ORCPT ); Thu, 12 Nov 2015 22:03:17 -0500 Message-ID: <1447383793.7045.27.camel@scientia.net> Subject: Re: bad extent [5993525264384, 5993525280768), type mismatch with chunk From: Christoph Anton Mitterer To: Qu Wenruo , "linux-btrfs@vger.kernel.org" Date: Fri, 13 Nov 2015 04:03:13 +0100 In-Reply-To: <56455073.1060406@cn.fujitsu.com> References: <1447365063.7045.7.camel@scientia.net> <5645474D.8000804@cn.fujitsu.com> <1447381613.7045.21.camel@scientia.net> <56455073.1060406@cn.fujitsu.com> Content-Type: multipart/signed; micalg="sha-512"; protocol="application/x-pkcs7-signature"; boundary="=-yOWxBUc09FB4JcivjAYl" Mime-Version: 1.0 Sender: linux-btrfs-owner@vger.kernel.org List-ID: --=-yOWxBUc09FB4JcivjAYl Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable On Fri, 2015-11-13 at 10:52 +0800, Qu Wenruo wrote: > You can provide the output of "btrfs-debug-tree -t 2 " to help > further debug. > It would be quite big, so it's better to zip it. That would contain all the filenames, right? Hmm that could be problematic because of privacy issues... > Although it may not help a lot, but at least I can tell you which > file=20 > extents are affected. (By the hard way, I can only tell you which > inode=20 > in which subvolume is affected, all in numeric form) >=20 > And I could get enough info to determine what's the wrong type. > (data extent in metadata chunk or vice verse, or even system chunk is > involved) sigh... I mean... how can that happen, if nothing of the more recent things is used... I'd have guess others would have noted such a bug before. > > And is there any way to tell more certain, whether the balance > > would > > help or whether I'd just get more possibly even hidden corruptions? > > I > > mean right... well it would be painful to recover from the most > > recent > > backup, but not extremely painful. >=20 > When extent and chunk type get wrong, only god knows what will > happen... > So no useful help here. If btrfs check already notices the mismatch, shouldn't it then be possible to set the correct type? > If the type mismatch errors are the only error output from fsck, then > scrub should not help or report anything useful. I see... > And at last, what's the kernel and btrfs-progs version? kernel 4.2.6 btrfsprogs=C2=A04.3 --=-yOWxBUc09FB4JcivjAYl 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 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