From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mailgw-02.dd24.net ([193.46.215.43]:49793 "EHLO mailgw-02.dd24.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752338AbbLLUdT (ORCPT ); Sat, 12 Dec 2015 15:33:19 -0500 Message-ID: <1449952395.6742.13.camel@scientia.net> Subject: Re: Will "btrfs check --repair" fix the mounting problem? From: Christoph Anton Mitterer To: Chris Murphy , Ivan Sizov Cc: Btrfs BTRFS Date: Sat, 12 Dec 2015 21:33:15 +0100 In-Reply-To: References: <566b0cff.pXiyzYE4dYIOt31+%sivan606@gmail.com> Content-Type: multipart/signed; micalg="sha-512"; protocol="application/x-pkcs7-signature"; boundary="=-JwTXJcrA8auDuosLhkCw" Mime-Version: 1.0 Sender: linux-btrfs-owner@vger.kernel.org List-ID: --=-JwTXJcrA8auDuosLhkCw Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable On Sat, 2015-12-12 at 13:16 -0700, Chris Murphy wrote: > > What is the better way to get data? send/receive works only with RO > > snapshots. Is there another way to preserve subvolumes and CoW > > structure (a lot of files was copied between subvols using "cp > > --reflink=3Dalways")? Or just rsync'ing files is all what I can do? >=20 > cp -a or rsync -a is all I can think of. To start to get it back to > normal, you can use duperemove. While that doesn't create subvolumes, > it'll at least find duplicate extents and use reflinks for those. So > it's in effect the same thing you have now, just lacking the > subvolume > structure. If he can still write to the fs, he could just create a ro-snapshot of the rw ones? Of course if the fs is already damaged, that may cause even more damage... so this should only be made on a clone of the fs. --=-JwTXJcrA8auDuosLhkCw 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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