From mboxrd@z Thu Jan 1 00:00:00 1970 From: Peter Kieser Subject: Re: [PATCH 00/24] Clustered MD RAID1 Date: Fri, 26 Dec 2014 14:35:05 -0800 Message-ID: <549DE299.3010205@kieser.ca> References: <20141218161456.GA29504@shrek.lan> <5499A55E.3010705@suse.de> Mime-Version: 1.0 Content-Type: multipart/signed; protocol="application/pkcs7-signature"; micalg=sha1; boundary="------------ms000600070105040200020600" Return-path: In-Reply-To: <5499A55E.3010705@suse.de> Sender: linux-raid-owner@vger.kernel.org To: Goldwyn Rodrigues , neilb@suse.de Cc: lzhong@suse.com, john@stoffel.org, linux-raid@vger.kernel.org List-Id: linux-raid.ids This is a cryptographically signed message in MIME format. --------------ms000600070105040200020600 Content-Type: text/plain; charset=windows-1252; format=flowed Content-Transfer-Encoding: quoted-printable On 2014-12-23 9:24 AM, Goldwyn Rodrigues wrote: > This md device can be used as a regular shared device. There are no > restrictions on the type of filesystem or LVM you can use, as long as > you observe clustering rules of using a shared device. This is very vague. I feel like this is a huge layering violation. LVM=20 or filesystem on top of mdadm should not have to be aware of what is=20 going on below. Otherwise, I feel like other clustered filesystems that=20 include RAID are better suited. As it stands, what are the benefits of=20 using this over $CLUSTER_FS? -Peter --------------ms000600070105040200020600 Content-Type: application/pkcs7-signature; name="smime.p7s" Content-Transfer-Encoding: base64 Content-Disposition: attachment; filename="smime.p7s" Content-Description: S/MIME Cryptographic Signature MIAGCSqGSIb3DQEHAqCAMIACAQExCzAJBgUrDgMCGgUAMIAGCSqGSIb3DQEHAQAAoIIMqzCC BjQwggQcoAMCAQICASAwDQYJKoZIhvcNAQEFBQAwfTELMAkGA1UEBhMCSUwxFjAUBgNVBAoT DVN0YXJ0Q29tIEx0ZC4xKzApBgNVBAsTIlNlY3VyZSBEaWdpdGFsIENlcnRpZmljYXRlIFNp Z25pbmcxKTAnBgNVBAMTIFN0YXJ0Q29tIENlcnRpZmljYXRpb24gQXV0aG9yaXR5MB4XDTA3 MTAyNDIxMDI1NVoXDTE3MTAyNDIxMDI1NVowgYwxCzAJBgNVBAYTAklMMRYwFAYDVQQKEw1T dGFydENvbSBMdGQuMSswKQYDVQQLEyJTZWN1cmUgRGlnaXRhbCBDZXJ0aWZpY2F0ZSBTaWdu aW5nMTgwNgYDVQQDEy9TdGFydENvbSBDbGFzcyAyIFByaW1hcnkgSW50ZXJtZWRpYXRlIENs aWVudCBDQTCCASIwDQYJKoZIhvcNAQEBBQADggEPADCCAQoCggEBAMsohUWcASz7GfKrpTOM KqANy9BV7V0igWdGxA8IU77L3aTxErQ+fcxtDYZ36Z6GH0YFn7fq5RADteP0AYzrCA+EQTfi 8q1+kA3m0nwtwXG94M5sIqsvs7lRP1aycBke/s5g9hJHryZ2acScnzczjBCAo7X1v5G3yw8M DP2m2RCye0KfgZ4nODerZJVzhAlOD9YejvAXZqHksw56HzElVIoYSZ3q4+RJuPXXfIoyby+Y 2m1E+YzX5iCZXBx05gk6MKAW1vaw4/v2OOLy6FZH3XHHtOkzUreG//CsFnB9+uaYSlR65cdG zTsmoIK8WH1ygoXhRBm98SD7Hf/r3FELNvUCAwEAAaOCAa0wggGpMA8GA1UdEwEB/wQFMAMB Af8wDgYDVR0PAQH/BAQDAgEGMB0GA1UdDgQWBBSuVYNv7DHKufcd+q9rMfPIHeOsuzAfBgNV HSMEGDAWgBROC+8apEBbpRdphzDKNGhD0EGu8jBmBggrBgEFBQcBAQRaMFgwJwYIKwYBBQUH MAGGG2h0dHA6Ly9vY3NwLnN0YXJ0c3NsLmNvbS9jYTAtBggrBgEFBQcwAoYhaHR0cDovL3d3 dy5zdGFydHNzbC5jb20vc2ZzY2EuY3J0MFsGA1UdHwRUMFIwJ6AloCOGIWh0dHA6Ly93d3cu c3RhcnRzc2wuY29tL3Nmc2NhLmNybDAnoCWgI4YhaHR0cDovL2NybC5zdGFydHNzbC5jb20v c2ZzY2EuY3JsMIGABgNVHSAEeTB3MHUGCysGAQQBgbU3AQIBMGYwLgYIKwYBBQUHAgEWImh0 dHA6Ly93d3cuc3RhcnRzc2wuY29tL3BvbGljeS5wZGYwNAYIKwYBBQUHAgEWKGh0dHA6Ly93 d3cuc3RhcnRzc2wuY29tL2ludGVybWVkaWF0ZS5wZGYwDQYJKoZIhvcNAQEFBQADggIBADqp Jw3I07QWke9plNBpxUxcffc7nUrIQpJHDci91DFG7fVhHRkMZ1J+BKg5UNUxIFJ2Z9B90Mic c/NXcs7kPBRdn6XGO/vPc87Y6R+cWS9Nc9+fp3Enmsm94OxOwI9wn8qnr/6o3mD4noP9Jphw UPTXwHovjavRnhUQHLfo/i2NG0XXgTHXS2Xm0kVUozXqpYpAdumMiB/vezj1QHQJDmUdPYMc p+reg9901zkyT3fDW/ivJVv6pWtkh6Pw2ytZT7mvg7YhX3V50Nv860cV11mocUVcqBLv0gcT +HBDYtbuvexNftwNQKD5193A7zN4vG7CTYkXxytSjKuXrpEatEiFPxWgb84nVj25SU5q/r1X hwby6mLhkbaXslkVtwEWT3Van49rKjlK4XrUKYYWtnfzq6aSak5u0Vpxd1rY79tWhD3EdCvO hNz/QplNa+VkIsrcp7+8ZhP1l1b2U6MaxIVteuVMD3X0vziIwr7jxYae9FZjbxlpUemqXjcC 0QaFfN7qI0JsQMALL7iGRBg7K0CoOBzECdD3fuZil5kU/LP9cr1BK31U0Uy651bFnAMMMkqh AChIbn0ei72VnbpSsrrSdF0BAGYQ8vyHae5aCg+H75dVCV33K6FuxZrf09yTz+Vx/PkdRUYk XmZz/OTfyJXsUOUXrym6KvI2rYpccSk5MIIGbzCCBVegAwIBAgICUcswDQYJKoZIhvcNAQEF BQAwgYwxCzAJBgNVBAYTAklMMRYwFAYDVQQKEw1TdGFydENvbSBMdGQuMSswKQYDVQQLEyJT ZWN1cmUgRGlnaXRhbCBDZXJ0aWZpY2F0ZSBTaWduaW5nMTgwNgYDVQQDEy9TdGFydENvbSBD bGFzcyAyIFByaW1hcnkgSW50ZXJtZWRpYXRlIENsaWVudCBDQTAeFw0xNDA4MTcxMDM5MDla Fw0xNjA4MTcxMzU1MzFaMIGOMRkwFwYDVQQNExBKSHI4SWdkNjhlbUUweVF6MQswCQYDVQQG EwJDQTEZMBcGA1UECBMQQnJpdGlzaCBDb2x1bWJpYTESMBAGA1UEBxMJVmFuY291dmVyMRUw EwYDVQQDEwxQZXRlciBLaWVzZXIxHjAcBgkqhkiG9w0BCQEWD3BldGVyQGtpZXNlci5jYTCC ASIwDQYJKoZIhvcNAQEBBQADggEPADCCAQoCggEBAL/NmLSwzKyhFa8wVY4On4D2atW+jO4k qzGjt32GITxEhweeR2AeQFhmBXTwwAHGnAEWU+lQSXoIoV9Hdi8GhTeFz3A5LPTLl/wa6dmv 8VCfYaREvoSxjEN4nsCtdU8P6NLUE4mqBe7ZiP9lDkqWgmd0fDEYjiOnJU3cdoLh5vDHOyu+ 9mmPDVEBELFgbbdQsyiINKQN5fwElQ/5hwip/5lFCrT8SYYVS7s2JwEPtvPmpl+JyOwRJakh VRv4Wd8Lyv/rchK4riwfMyHhuKwbbKRxs3HzSHjtsjGZ2tS1UzDEalL7ZRsHC4EvZmgBGg5E 0l1Bz7cC4JcPIy+8G14OjZkCAwEAAaOCAtUwggLRMAkGA1UdEwQCMAAwCwYDVR0PBAQDAgSw MB0GA1UdJQQWMBQGCCsGAQUFBwMCBggrBgEFBQcDBDAdBgNVHQ4EFgQUvDcOWQqoGGEK+KDc 6opnV1iupIkwHwYDVR0jBBgwFoAUrlWDb+wxyrn3HfqvazHzyB3jrLswGgYDVR0RBBMwEYEP cGV0ZXJAa2llc2VyLmNhMIIBTAYDVR0gBIIBQzCCAT8wggE7BgsrBgEEAYG1NwECAzCCASow LgYIKwYBBQUHAgEWImh0dHA6Ly93d3cuc3RhcnRzc2wuY29tL3BvbGljeS5wZGYwgfcGCCsG AQUFBwICMIHqMCcWIFN0YXJ0Q29tIENlcnRpZmljYXRpb24gQXV0aG9yaXR5MAMCAQEagb5U aGlzIGNlcnRpZmljYXRlIHdhcyBpc3N1ZWQgYWNjb3JkaW5nIHRvIHRoZSBDbGFzcyAyIFZh bGlkYXRpb24gcmVxdWlyZW1lbnRzIG9mIHRoZSBTdGFydENvbSBDQSBwb2xpY3ksIHJlbGlh bmNlIG9ubHkgZm9yIHRoZSBpbnRlbmRlZCBwdXJwb3NlIGluIGNvbXBsaWFuY2Ugb2YgdGhl IHJlbHlpbmcgcGFydHkgb2JsaWdhdGlvbnMuMDYGA1UdHwQvMC0wK6ApoCeGJWh0dHA6Ly9j cmwuc3RhcnRzc2wuY29tL2NydHUyLWNybC5jcmwwgY4GCCsGAQUFBwEBBIGBMH8wOQYIKwYB BQUHMAGGLWh0dHA6Ly9vY3NwLnN0YXJ0c3NsLmNvbS9zdWIvY2xhc3MyL2NsaWVudC9jYTBC BggrBgEFBQcwAoY2aHR0cDovL2FpYS5zdGFydHNzbC5jb20vY2VydHMvc3ViLmNsYXNzMi5j bGllbnQuY2EuY3J0MCMGA1UdEgQcMBqGGGh0dHA6Ly93d3cuc3RhcnRzc2wuY29tLzANBgkq hkiG9w0BAQUFAAOCAQEAycbEJG6nvyfbv2X4npgq1ceU+y1qYmXczCBNvNRJ2yvVXc8ljjQs KRDzpr8JhTCg4SMZh3C3AIOBGxrYCsyaxRL3Ssfh/6Ptg3ExIfVNj6CobB1piTrusORaVDYS jEtZZRR4iYt9mDRo/mZRhh4QRManZYwCXPG4mrguqQ4NLYVdgTsHYgCTRymMbyrQ0+eIGdAO /szcirRovADyxroMclw+TTlB7nQrovIsTVteGqe0renKR0bzdWsexQEntKpBxJLy/HTSIHeQ HU5r7hwjk/v1aoKlimuaKbdGTJl10BYk8+pbU8JGEl1sm1cNn4MKYwhnWFRTBEPEiXP6VyNc PTGCA9owggPWAgEBMIGTMIGMMQswCQYDVQQGEwJJTDEWMBQGA1UEChMNU3RhcnRDb20gTHRk LjErMCkGA1UECxMiU2VjdXJlIERpZ2l0YWwgQ2VydGlmaWNhdGUgU2lnbmluZzE4MDYGA1UE AxMvU3RhcnRDb20gQ2xhc3MgMiBQcmltYXJ5IEludGVybWVkaWF0ZSBDbGllbnQgQ0ECAlHL MAkGBSsOAwIaBQCgggIbMBgGCSqGSIb3DQEJAzELBgkqhkiG9w0BBwEwHAYJKoZIhvcNAQkF MQ8XDTE0MTIyNjIyMzUwNVowIwYJKoZIhvcNAQkEMRYEFJrB48+EjJEaq4XVWMmkcFDX+S/+ MGwGCSqGSIb3DQEJDzFfMF0wCwYJYIZIAWUDBAEqMAsGCWCGSAFlAwQBAjAKBggqhkiG9w0D BzAOBggqhkiG9w0DAgICAIAwDQYIKoZIhvcNAwICAUAwBwYFKw4DAgcwDQYIKoZIhvcNAwIC ASgwgaQGCSsGAQQBgjcQBDGBljCBkzCBjDELMAkGA1UEBhMCSUwxFjAUBgNVBAoTDVN0YXJ0 Q29tIEx0ZC4xKzApBgNVBAsTIlNlY3VyZSBEaWdpdGFsIENlcnRpZmljYXRlIFNpZ25pbmcx ODA2BgNVBAMTL1N0YXJ0Q29tIENsYXNzIDIgUHJpbWFyeSBJbnRlcm1lZGlhdGUgQ2xpZW50 IENBAgJRyzCBpgYLKoZIhvcNAQkQAgsxgZaggZMwgYwxCzAJBgNVBAYTAklMMRYwFAYDVQQK Ew1TdGFydENvbSBMdGQuMSswKQYDVQQLEyJTZWN1cmUgRGlnaXRhbCBDZXJ0aWZpY2F0ZSBT aWduaW5nMTgwNgYDVQQDEy9TdGFydENvbSBDbGFzcyAyIFByaW1hcnkgSW50ZXJtZWRpYXRl IENsaWVudCBDQQICUcswDQYJKoZIhvcNAQEBBQAEggEAtb1pUbT2o0tlhgyDzcPkHKP7bmRX HfdPguLJ/WFwZv5DMpoueQVhQNkwWnkMHY72z2E48o0VZ7FUxRhkfufkR1kjW8v6QXh7CKax ji3THrjNMP8MrX4SRJPVQdmqsdfu6J36LXHGOk65OTNFRJs+bTCHZxX+CDbarz5KR1h3O5HO Re3Qat0GKZFi/tI5BM6Cx6T7ylL9CAdUiOHGTCA13VqlVTIzPul2EUgRMUXrR8GSYsRE6iPk juF9RoqVBd5Mek9iBc5NWuShs3WZZHQJczRv6DXdeRnpanp87ZOrCAWyGcxOfvqIS4c+82eF JRbuWZ35pT6qBD2/CjUE0otPoQAAAAAAAA== --------------ms000600070105040200020600--