From mboxrd@z Thu Jan 1 00:00:00 1970 From: Carsten Aulbert Subject: Re: running iozone on bcache0 device yields wrongly read data Date: Wed, 18 Sep 2013 06:34:21 +0200 Message-ID: <52392D4D.3020506@aei.mpg.de> References: <5238AAE5.8000800@aei.mpg.de> <20130917204059.GB32037@kmo-pixel> Mime-Version: 1.0 Content-Type: multipart/signed; protocol="application/pkcs7-signature"; micalg=sha1; boundary="------------ms070807050603000702080006" Return-path: In-Reply-To: <20130917204059.GB32037@kmo-pixel> Sender: linux-bcache-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org To: Kent Overstreet Cc: linux-bcache-u79uwXL29TY76Z2rM5mHXA@public.gmane.org List-Id: linux-bcache@vger.kernel.org This is a cryptographically signed message in MIME format. --------------ms070807050603000702080006 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: quoted-printable Hi On 09/17/2013 10:40 PM, Kent Overstreet wrote: > What's your setup? Are you running md, lvm? What filesystem? Very basic, no md or LVM involved. /dev/sda2 is the backing device and /dev/sdb is the cache device. On top of bcache0 I'm running xfs: # parted -s /dev/sda p Model: ATA Hitachi HDP72505 (scsi) Disk /dev/sda: 500GB Sector size (logical/physical): 512B/512B Partition Table: msdos Number Start End Size Type File system Flags 1 1049kB 10.5GB 10.5GB primary xfs boot 2 10.5GB 499GB 489GB primary 3 499GB 500GB 1049MB primary linux-swap(v1) # parted -s /dev/sdb p Error: /dev/sdb: unrecognised disk label # grep bcache /proc/mounts /dev/bcache0 /srv xfs rw,relatime,attr2,inode64,noquota 0 0 # bcache-super-show /dev/sda2 sb.magic ok sb.first_sector 8 [match] sb.csum 7B66B1004B52FD9A [match] sb.version 1 [backing device] dev.uuid 3a131733-7d54-4feb-bf8c-62d6fbdbf935 dev.sectors_per_block 1 dev.sectors_per_bucket 1024 dev.data.first_sector 16 dev.data.cache_mode 1 [writeback] dev.data.cache_state 1 [clean] cset.uuid 2a108307-bab9-42dd-b072-10eeb0c13dd8 # bcache-super-show /dev/sdb sb.magic ok sb.first_sector 8 [match] sb.csum 88965AD15D35A500 [match] sb.version 3 [cache device] dev.uuid ffb6fc80-1dca-42d4-a951-cddee6af689e dev.sectors_per_block 1 dev.sectors_per_bucket 1024 dev.cache.first_sector 1024 dev.cache.cache_sectors 62498816 dev.cache.total_sectors 62499840 dev.cache.discard no dev.cache.pos 0 cset.uuid 2a108307-bab9-42dd-b072-10eeb0c13dd8 Does this help? cheers Carsten --------------ms070807050603000702080006 Content-Type: application/pkcs7-signature; name="smime.p7s" Content-Transfer-Encoding: base64 Content-Disposition: attachment; filename="smime.p7s" Content-Description: S/MIME Cryptographic Signature MIAGCSqGSIb3DQEHAqCAMIACAQExCzAJBgUrDgMCGgUAMIAGCSqGSIb3DQEHAQAAoIIE8DCC BOwwggPUoAMCAQICAk/QMA0GCSqGSIb3DQEBBQUAMDYxCzAJBgNVBAYTAkRFMRMwEQYDVQQK EwpHZXJtYW5HcmlkMRIwEAYDVQQDEwlHcmlkS2EtQ0EwHhcNMTMwNTA2MTU1OTM4WhcNMTQw NjA1MTU1OTM4WjA9MRMwEQYDVQQKEwpHZXJtYW5HcmlkMQwwCgYDVQQLEwNBRUkxGDAWBgNV BAMTD0NhcnN0ZW4gQXVsYmVydDCCASIwDQYJKoZIhvcNAQEBBQADggEPADCCAQoCggEBAJzM vu6K/4EHUx/JuCoansTOW8cSyuPbvElm7IfuuEfXHJ1/m/Lbkv/C7oA+0Pvk4WCOLBx1OVUk 4vVZ0Lq6G9ekTgeZVaqFvHXKlFdUvdp3b5/nlAGc3z7GaDG/F6LdI5Iu374cTdeSvkuNseRg KZP6Qq4GIMAZZ2hv1JC/xDxZs/59ACuL0IsjmdZPEiR8uiF01ZejehmdFiPJJP8at+PJgnoW hW21Gh72CYI3CjvfB37Q5fUOqF1gMsfJmsJokwYfLLy8BcWbmP5BQ8IOL42F2RsuPTctnnbS hhYj73Qyp4/Mxzeg1r34ZevEqM1pX6ceW7I/7Aos8HmhbcW71KMCAwEAAaOCAfswggH3MAwG A1UdEwEB/wQCMAAwDgYDVR0PAQH/BAQDAgSwMB0GA1UdDgQWBBTeMPDcRbuXT/FdxHmf8kNH EWVOVjAfBgNVHSMEGDAWgBTGdckorNEL/Dz/ubUe0187gGISNDAlBgNVHREEHjAcgRpDYXJz dGVuLkF1bGJlcnRAYWVpLm1wZy5kZTAcBgNVHRIEFTATgRFncmlka2EtY2FAa2l0LmVkdTA1 BgNVHR8ELjAsMCqgKKAmhiRodHRwOi8vZ3JpZC5memsuZGUvY2EvZ3JpZGthLWNybC5kZXIw KAYDVR0gBCEwHzAPBg0rBgEEAZQ2qywBAQEIMAwGCiqGSIb3TAUCAgEwEQYJYIZIAYb4QgEB BAQDAgWgME4GCWCGSAGG+EIBDQRBFj9DZXJ0aWZpY2F0ZSBpc3N1ZWQgdW5kZXIgQ1AvQ1BT IHYuIDEuOCBhdCBodHRwOi8vZ3JpZC5memsuZGUvY2EwJAYJYIZIAYb4QgECBBcWFWh0dHA6 Ly9ncmlkLmZ6ay5kZS9jYTAzBglghkgBhvhCAQgEJhYkaHR0cDovL2dyaWQuZnprLmRlL2Nh L2dyaWRrYS1jcHMucGRmMDMGCWCGSAGG+EIBAwQmFiRodHRwOi8vZ3JpZC5memsuZGUvY2Ev Z3JpZGthLWNybC5kZXIwDQYJKoZIhvcNAQEFBQADggEBALkdDvMzLkK1EpFkRPxEA4GpbYyy 5p59V9057HT/QUYvD7rO5KiayiRoDqgKeDW59Fek1N5W0d2IuN+j+VWLDqlBI1THd33F3Dqc 08Me/q6OkpHDjhCDnuH353n2gyxnsmXEEMozhx4onJbX0N3kZxjgNKEiP9R+zOq6Qq+CgKFS O5w/wdtCTQ5Tpfr/n90KWYwVQ2er5dnKowu6j9YIj/dD8jJGk3T13rgzdnRzWtSQhjP8YIRf ql08NsUgDShjNiBo289K7fpBNdVLGNI/pIA8P1ratofCGBPvMdjp+cjhulQX5//qS1ctP0ux 8MhY3kBMGynLkwibH5MiLfVSip0xggLOMIICygIBATA8MDYxCzAJBgNVBAYTAkRFMRMwEQYD VQQKEwpHZXJtYW5HcmlkMRIwEAYDVQQDEwlHcmlkS2EtQ0ECAk/QMAkGBSsOAwIaBQCgggFn MBgGCSqGSIb3DQEJAzELBgkqhkiG9w0BBwEwHAYJKoZIhvcNAQkFMQ8XDTEzMDkxODA0MzQy MVowIwYJKoZIhvcNAQkEMRYEFGijL4eu831qFCMJw+WNv2Q2uq5OMEsGCSsGAQQBgjcQBDE+ MDwwNjELMAkGA1UEBhMCREUxEzARBgNVBAoTCkdlcm1hbkdyaWQxEjAQBgNVBAMTCUdyaWRL YS1DQQICT9AwTQYLKoZIhvcNAQkQAgsxPqA8MDYxCzAJBgNVBAYTAkRFMRMwEQYDVQQKEwpH ZXJtYW5HcmlkMRIwEAYDVQQDEwlHcmlkS2EtQ0ECAk/QMGwGCSqGSIb3DQEJDzFfMF0wCwYJ YIZIAWUDBAEqMAsGCWCGSAFlAwQBAjAKBggqhkiG9w0DBzAOBggqhkiG9w0DAgICAIAwDQYI KoZIhvcNAwICAUAwBwYFKw4DAgcwDQYIKoZIhvcNAwICASgwDQYJKoZIhvcNAQEBBQAEggEA WE0vn6KAauIhKtFLOq9uU27f2sf8OKUdNXUibTCHfuSHIwlh1yziPQ3ACxcGFBE1IMsj+mBc 9gCuqFoaGBQTDFY9Yn172/qEBW2xAWC9eJMfJ41cn/gMlgZWFw4qQLrjuAC8MAbR/20Ky02I DleUx+9HrVZR/Uv+7sq87e2nSZt868rXXu7knVsR3HwHDJsn/horkcAcayxLWBQPf7r7F6QN VJy18k7Lyywf4v1fsdsGVTBFAueUSI8N+zVL6HjDqlt4KX/Lq0LDaIuM0TCgzdh97R01p8wE 4Ap0YO0aW7w6jVdRChBFcOX4eYS9MhlJHWbb/zTTHzlGL+W0S1IQeQAAAAAAAA== --------------ms070807050603000702080006--