From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mx1.redhat.com (ext-mx18.extmail.prod.ext.phx2.redhat.com [10.5.110.47]) by smtp.corp.redhat.com (Postfix) with ESMTPS id B4BB618012 for ; Thu, 28 Feb 2019 10:41:49 +0000 (UTC) Received: from mail.service4.ru (mail.service4.ru [195.201.68.178]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id 2084230BC9C6 for ; Thu, 28 Feb 2019 10:41:47 +0000 (UTC) Received: from mail.service4.ru (localhost [127.0.0.1]) by mail.service4.ru (Postfix) with ESMTP id B04774082F for ; Thu, 28 Feb 2019 13:41:45 +0300 (MSK) Received: from mail.service4.ru ([127.0.0.1]) by mail.service4.ru (mail.service4.ru [127.0.0.1]) (amavisd-new, port 10026) with ESMTP id JuzsPVR31l2S for ; Thu, 28 Feb 2019 13:41:44 +0300 (MSK) References: <253b63e7-e23b-9a0a-d677-a114c00a5134@linux.ibm.com> <2c295ce3-2766-ba41-4bba-575c799b3d46@gmail.com> <443f1e98-1dec-17e5-f38d-cbbd52cd541c@linux.ibm.com> <11dcbee0-ec65-d5d2-b07c-9937b99cc5b4@linux.ibm.com> <3f94a1df-d333-70fe-56ab-3661b384e028@linux.ibm.com> From: Ilia Zykov Message-ID: <30ba3646-1562-4614-0b7a-786d01056bf8@service4.ru> Date: Thu, 28 Feb 2019 13:41:42 +0300 MIME-Version: 1.0 In-Reply-To: <3f94a1df-d333-70fe-56ab-3661b384e028@linux.ibm.com> Content-Type: multipart/signed; protocol="application/pkcs7-signature"; micalg=sha-256; boundary="------------ms010103090402060209020508" Subject: Re: [linux-lvm] Filesystem corruption with LVM's pvmove onto a PV with a larger physical block size Reply-To: LVM general discussion and development List-Id: LVM general discussion and development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , List-Id: To: LVM general discussion and development , Ingo Franzki This is a cryptographically signed message in MIME format. --------------ms010103090402060209020508 Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: quoted-printable >> >> smartctl -i /dev/sdb; blockdev --getbsz --getpbsz /dev/sdb >> Device Model: HGST HUS722T2TALA604 >> User Capacity: 2,000,398,934,016 bytes [2.00 TB] >> Sector Size: 512 bytes logical/physical >> Rotation Rate: 7200 rpm >> Form Factor: 3.5 inches >> 4096 >> 512 >> >> As you see =E2=80=9C=E2=80=93getbsz=E2=80=9D forever 4096. > I also see logical block size to be 4096 for all devices on my system. >> But I think it must be forever 512. >> What does it mean? > I have seen the following description about logical and physical block = sizes somewhere in the internet: > "Logical block sizes are the units used by the 'kernel' for read/write = operations. Kernel can but usually does not want, because reduce performance. > Physical block sizes are the units which 'disk controllers' use for rea= d/write operations." Not disk controller on the motherboard, but controller inside disk. We don't have access to it. >=20 > For the problem mentioned in this thread, the physical block size is wh= at you are looking for. >> I think it is BUG in the "blockdev". My question was: Can this error(or similar) be related to a problem in pvmove? --------------ms010103090402060209020508 Content-Type: application/pkcs7-signature; name="smime.p7s" Content-Transfer-Encoding: base64 Content-Disposition: attachment; filename="smime.p7s" Content-Description: S/MIME Cryptographic Signature MIAGCSqGSIb3DQEHAqCAMIACAQExDzANBglghkgBZQMEAgEFADCABgkqhkiG9w0BBwEAAKCC CxowggUsMIIEFKADAgECAhEAiiHRAx2BN/J/vHFQnEFVdDANBgkqhkiG9w0BAQsFADCBlzEL MAkGA1UEBhMCR0IxGzAZBgNVBAgTEkdyZWF0ZXIgTWFuY2hlc3RlcjEQMA4GA1UEBxMHU2Fs Zm9yZDEaMBgGA1UEChMRQ09NT0RPIENBIExpbWl0ZWQxPTA7BgNVBAMTNENPTU9ETyBSU0Eg Q2xpZW50IEF1dGhlbnRpY2F0aW9uIGFuZCBTZWN1cmUgRW1haWwgQ0EwHhcNMTgxMDE1MDAw MDAwWhcNMTkxMDE1MjM1OTU5WjAhMR8wHQYJKoZIhvcNAQkBFhBtYWlsQHNlcnZpY2U0LnJ1 MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAsJfqSy9iSZz1Pn76nAw5ObLxDo4C 7N7yScf2Khg/vcU0VEc7p2vcLM9Aaoed/up55L2IXkDu5ON1JsnpeCgEB8C/LXePQTOaxuv5 HZ4e/WK7m6JY7HdnFxfD70VdSzVp9zXHwqpo5cHD26yq8uMkQUhEdcNBXBJ0HimjPSsfmxlI 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