From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-ig0-f169.google.com ([209.85.213.169]:37258 "EHLO mail-ig0-f169.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751677AbbKBMhC (ORCPT ); Mon, 2 Nov 2015 07:37:02 -0500 Received: by igbhv6 with SMTP id hv6so52926061igb.0 for ; Mon, 02 Nov 2015 04:37:01 -0800 (PST) Subject: Re: trying to balance, filesystem keeps going read-only. To: Ken Long , Roman Mamedov References: <20151101184844.0d67e5e2@natsu> <20151101191730.298dcff4@natsu> Cc: linux-btrfs@vger.kernel.org From: Austin S Hemmelgarn Message-ID: <563758E9.3080107@gmail.com> Date: Mon, 2 Nov 2015 07:36:57 -0500 MIME-Version: 1.0 In-Reply-To: Content-Type: multipart/signed; protocol="application/pkcs7-signature"; micalg=sha-512; boundary="------------ms010003090207080003040306" Sender: linux-btrfs-owner@vger.kernel.org List-ID: This is a cryptographically signed message in MIME format. --------------ms010003090207080003040306 Content-Type: text/plain; charset=windows-1252 Content-Transfer-Encoding: quoted-printable On 2015-11-01 09:33, Ken Long wrote: > I get a similar read-only status when I try to remove the drive from th= e array.. >=20 > Too bad the utility's function can not be slowed down.. to avoid > triggering this error... ? >=20 Actually, there are a couple of ways you could do this. The most reliabl= e way to do it (and arguably the only correct way) is to use the blkio cgroup to put ban= dwidth or IOPS limits on the process. For authoritative info about how to do this,= check Documentation/cgroups/blkio-controller.txt in the Linux source tree. If the issue really is the device not responding soon enough, you may als= o try increasing the device timeout the kernel uses. A udev rule like the following will = increase the timeout for all ATA/SCSI/USB (it says SCSI devices, but all ATA and USB d= evices get routed through the SCSI subsystem anyway unless you're using really old a= nd deprecated drivers) devices to 150 seconds (2.5 minutes, which is reasonable for mos= t non-enterprise devices): DRIVER=3D=3D"sd", SUBSYSTEM=3D=3D"scsi", ENV{DEVTYPE}=3D=3D"scsi_device",= ATTR{timeout}=3D"150" --------------ms010003090207080003040306 Content-Type: application/pkcs7-signature; name="smime.p7s" Content-Transfer-Encoding: base64 Content-Disposition: attachment; filename="smime.p7s" Content-Description: S/MIME Cryptographic Signature MIAGCSqGSIb3DQEHAqCAMIACAQExDzANBglghkgBZQMEAgMFADCABgkqhkiG9w0BBwEAAKCC Brgwgga0MIIEnKADAgECAgMRLfgwDQYJKoZIhvcNAQENBQAweTEQMA4GA1UEChMHUm9vdCBD QTEeMBwGA1UECxMVaHR0cDovL3d3dy5jYWNlcnQub3JnMSIwIAYDVQQDExlDQSBDZXJ0IFNp Z25pbmcgQXV0aG9yaXR5MSEwHwYJKoZIhvcNAQkBFhJzdXBwb3J0QGNhY2VydC5vcmcwHhcN MTUwOTIxMTEzNTEzWhcNMTYwMzE5MTEzNTEzWjBjMRgwFgYDVQQDEw9DQWNlcnQgV29UIFVz ZXIxIzAhBgkqhkiG9w0BCQEWFGFoZmVycm9pbjdAZ21haWwuY29tMSIwIAYJKoZIhvcNAQkB FhNhaGVtbWVsZ0BvaGlvZ3QuY29tMIICIjANBgkqhkiG9w0BAQEFAAOCAg8AMIICCgKCAgEA nQ/81tq0QBQi5w316VsVNfjg6kVVIMx760TuwA1MUaNQgQ3NyUl+UyFtjhpkNwwChjgAqfGd LIMTHAdObcwGfzO5uI2o1a8MHVQna8FRsU3QGouysIOGQlX8jFYXMKPEdnlt0GoQcd+BtESr pivbGWUEkPs1CwM6WOrs+09bAJP3qzKIr0VxervFrzrC5Dg9Rf18r9WXHElBuWHg4GYHNJ2V Ab8iKc10h44FnqxZK8RDN8ts/xX93i9bIBmHnFfyNRfiOUtNVeynJbf6kVtdHP+CRBkXCNRZ qyQT7gbTGD24P92PS2UTmDfplSBcWcTn65o3xWfesbf02jF6PL3BCrVnDRI4RgYxG3zFBJuG qvMoEODLhHKSXPAyQhwZINigZNdw5G1NqjXqUw+lIqdQvoPijK9J3eijiakh9u2bjWOMaleI SMRR6XsdM2O5qun1dqOrCgRkM0XSNtBQ2JjY7CycIx+qifJWsRaYWZz0aQU4ZrtAI7gVhO9h pyNaAGjvm7PdjEBiXq57e4QcgpwzvNlv8pG1c/hnt0msfDWNJtl3b6elhQ2Pz4w/QnWifZ8E BrFEmjeeJa2dqjE3giPVWrsH+lOvQQONsYJOuVb8b0zao4vrWeGmW2q2e3pdv0Axzm/60cJQ haZUv8+JdX9ZzqxOm5w5eUQSclt84u+D+hsCAwEAAaOCAVkwggFVMAwGA1UdEwEB/wQCMAAw VgYJYIZIAYb4QgENBEkWR1RvIGdldCB5b3VyIG93biBjZXJ0aWZpY2F0ZSBmb3IgRlJFRSBo ZWFkIG92ZXIgdG8gaHR0cDovL3d3dy5DQWNlcnQub3JnMA4GA1UdDwEB/wQEAwIDqDBABgNV HSUEOTA3BggrBgEFBQcDBAYIKwYBBQUHAwIGCisGAQQBgjcKAwQGCisGAQQBgjcKAwMGCWCG SAGG+EIEATAyBggrBgEFBQcBAQQmMCQwIgYIKwYBBQUHMAGGFmh0dHA6Ly9vY3NwLmNhY2Vy dC5vcmcwMQYDVR0fBCowKDAmoCSgIoYgaHR0cDovL2NybC5jYWNlcnQub3JnL3Jldm9rZS5j cmwwNAYDVR0RBC0wK4EUYWhmZXJyb2luN0BnbWFpbC5jb22BE2FoZW1tZWxnQG9oaW9ndC5j b20wDQYJKoZIhvcNAQENBQADggIBADMnxtSLiIunh/TQcjnRdf63yf2D8jMtYUm4yDoCF++J jCXbPQBGrpCEHztlNSGIkF3PH7ohKZvlqF4XePWxpY9dkr/pNyCF1PRkwxUURqvuHXbu8Lwn 8D3U2HeOEU3KmrfEo65DcbanJCMTTW7+mU9lZICPP7ZA9/zB+L0Gm1UNFZ6AU50N/86vjQfY WgkCd6dZD4rQ5y8L+d/lRbJW7ZGEQw1bSFVTRpkxxDTOwXH4/GpQfnfqTAtQuJ1CsKT12e+H NSD/RUWGTr289dA3P4nunBlz7qfvKamxPymHeBEUcuICKkL9/OZrnuYnGROFwcdvfjGE5iLB kjp/ttrY4aaVW5EsLASNgiRmA6mbgEAMlw3RwVx0sVelbiIAJg9Twzk4Ct6U9uBKiJ8S0sS2 8RCSyTmCRhJs0vvva5W9QUFGmp5kyFQEoSfBRJlbZfGX2ehI2Hi3U2/PMUm2ONuQG1E+a0AP u7I0NJc/Xil7rqR0gdbfkbWp0a+8dAvaM6J00aIcNo+HkcQkUgtfrw+C2Oyl3q8IjivGXZqT 5UdGUb2KujLjqjG91Dun3/RJ/qgQlotH7WkVBs7YJVTCxfkdN36rToPcnMYOI30FWa0Q06gn F6gUv9/mo6riv3A5bem/BdbgaJoPnWQD9D8wSyci9G4LKC+HQAMdLmGoeZfpJzKHMYIE0TCC BM0CAQEwgYAweTEQMA4GA1UEChMHUm9vdCBDQTEeMBwGA1UECxMVaHR0cDovL3d3dy5jYWNl cnQub3JnMSIwIAYDVQQDExlDQSBDZXJ0IFNpZ25pbmcgQXV0aG9yaXR5MSEwHwYJKoZIhvcN AQkBFhJzdXBwb3J0QGNhY2VydC5vcmcCAxEt+DANBglghkgBZQMEAgMFAKCCAiEwGAYJKoZI hvcNAQkDMQsGCSqGSIb3DQEHATAcBgkqhkiG9w0BCQUxDxcNMTUxMTAyMTIzNjU3WjBPBgkq hkiG9w0BCQQxQgRAnWl8Q+kn4R/oMDnWfW7uS1C+SMkrEjzOcbjV88brrDvYMnjz+qIUb3cB 7Juj8nXs3IAKoFflKYowayfltaGgZDBsBgkqhkiG9w0BCQ8xXzBdMAsGCWCGSAFlAwQBKjAL BglghkgBZQMEAQIwCgYIKoZIhvcNAwcwDgYIKoZIhvcNAwICAgCAMA0GCCqGSIb3DQMCAgFA MAcGBSsOAwIHMA0GCCqGSIb3DQMCAgEoMIGRBgkrBgEEAYI3EAQxgYMwgYAweTEQMA4GA1UE ChMHUm9vdCBDQTEeMBwGA1UECxMVaHR0cDovL3d3dy5jYWNlcnQub3JnMSIwIAYDVQQDExlD QSBDZXJ0IFNpZ25pbmcgQXV0aG9yaXR5MSEwHwYJKoZIhvcNAQkBFhJzdXBwb3J0QGNhY2Vy dC5vcmcCAxEt+DCBkwYLKoZIhvcNAQkQAgsxgYOggYAweTEQMA4GA1UEChMHUm9vdCBDQTEe MBwGA1UECxMVaHR0cDovL3d3dy5jYWNlcnQub3JnMSIwIAYDVQQDExlDQSBDZXJ0IFNpZ25p bmcgQXV0aG9yaXR5MSEwHwYJKoZIhvcNAQkBFhJzdXBwb3J0QGNhY2VydC5vcmcCAxEt+DAN BgkqhkiG9w0BAQEFAASCAgAqnutudY+1S5xmEJx7Kynt+wyAfQSICMFtL/gcAu+NJXOt0s2b XvVqoQM/CZEZYyd/uJeKSFJTGxovtpJVyr294MKcJ5DcVWtEU+FGQQb6TBCaV4RL/uDAUyx6 9QxyYdzxDJnBOG9LZpPnwaIOnnJrr2EcpEnnAyGJRUY2+zjBcX4lBIhoEAnN6gFzDd8wtXRc IU939aADBe0eEb9Kj1Fu2kfHUHKH9AfIvTvh5lMZUcDz/qkFxNY4xTzKjf0qFtjGQv2TRoKU /udGtXB+eDmLMtp3FiJOjSKcDMivngyUi6S6bmyieGyQYlAqN/E++xmC95stJPWnaXOcgkSe ZwcyThG4l+VBBW94bos/p7XtWtfapmlTVASx7+dgAUG3n4FCce4qN0cHSpQy6sj0Pvx3iAwp 6RKIzEK/MJFA3IFD6HhvsZJMre38DVrGyp++A2j4RLzkOSKciNI7DU5diJ3H9Z3TJBCnQD8k j1MsxGA1J7wsLGEArc1CDsqbIoQ+qNg6/vgU+O0JpXDwIMBKqIyqSzAELapE9YZ/f9M5yVNS fX1GYGKbgQDZ5L8ZLCRJ2SndJdlrBpA3IJYD60DjsNUr++XsO2V7YG0ScPeTAgjnCMEVfBw/ +xugULiTLNmlAgSvpsT2RNXxQ5U40RtsGxeEB7I8BrASIMMRVz7z2WRLMgAAAAAAAA== --------------ms010003090207080003040306--