From owner-freebsd-questions@freebsd.org Wed Jul 3 13:52:01 2019 Return-Path: Delivered-To: freebsd-questions@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id AAAAB15D477B for ; Wed, 3 Jul 2019 13:52:00 +0000 (UTC) (envelope-from karl@denninger.net) Received: from colo1.denninger.net (colo1.denninger.net [104.236.120.189]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client did not present a certificate) by mx1.freebsd.org (Postfix) with ESMTPS id 4D522746A8 for ; Wed, 3 Jul 2019 13:52:00 +0000 (UTC) (envelope-from karl@denninger.net) Received: from denninger.net (ip68-1-57-197.pn.at.cox.net [68.1.57.197]) by colo1.denninger.net (Postfix) with ESMTP id 373AC211090 for ; Wed, 3 Jul 2019 09:51:24 -0400 (EDT) Received: from [192.168.10.20] (D10.Denninger.Net [192.168.10.20]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by denninger.net (Postfix) with ESMTPSA id C3BBA16ED7A for ; Wed, 3 Jul 2019 08:51:23 -0500 (CDT) Subject: Re: extremely slow disk I/O after updating to 12.0 To: freebsd-questions@freebsd.org References: From: Karl Denninger Openpgp: preference=signencrypt Autocrypt: addr=karl@denninger.net; prefer-encrypt=mutual; keydata= mQINBFIX1zsBEADRcJfsQUl9oFeoMfLPJ1kql+3sIaYx0MfJAUhV9LnbWxr0fsWCskM1O4cV tHm5dqPkuPM4Ztc0jLotD1i9ubWvCHOlkLGxFOL+pFbjA+XZ7VKsC/xWmhMwJ3cM8HavK2OV SzEWQ/AEYtMi04IzGSwsxh/5/5R0mPHrsIomV5SbuiI0vjLuDj7fo6146AABI1ULzge4hBYW i/SHrqUrLORmUNBs6bxek79/B0Dzk5cIktD3LOfbT9EAa5J/osVkstMBhToJgQttaMIGv8SG CzpR/HwEokE+7DP+k2mLHnLj6H3kfugOF9pJH8Za4yFmw//s9cPXV8WwtZ2SKfVzn1unpKqf wmJ1PwJoom/d4fGvQDkgkGKRa6RGC6tPmXnqnx+YX4iCOdFfbP8L9rmk2sewDDVzHDU3I3ZZ 8hFIjMYM/QXXYszRatK0LCV0QPZuF7LCf4uQVKw1/oyJInsnH7+6a3c0h21x+CmSja9QJ+y0 yzgEN/nM89d6YTakfR+1xkYgodVmMy/bS8kmXbUUZG/CyeqCqc95RUySjKT2ECrf9GhhoQkl +D8n2MsrAUSMGB4GQSN+TIq9OBTpNuvATGSRuF9wnQcs1iSry+JNCpfRTyWp83uCNApe6oHU EET4Et6KDO3AvjvBMAX0TInTRGW2SQlJMuFKpc7Dg7tHK8zzqQARAQABtCNLYXJsIERlbm5p bmdlciA8a2FybEBkZW5uaW5nZXIubmV0PokCPAQTAQIAJgUCUhfXOwIbIwUJCWYBgAYLCQgH AwIEFQIIAwQWAgMBAh4BAheAAAoJEG6/sivc5s0PLxQP/i6x/QFx9G4Cw7C+LthhLXIm7NSH AtNbz2UjySEx2qkoQQjtsK6mcpEEaky4ky6t8gz0/SifIfJmSmyAx0UhUQ0WBv1vAXwtNrQQ jJd9Bj6l4c2083WaXyHPjt2u2Na6YFowyb4SaQb83hu/Zs25vkPQYJVVE0JX409MFVPUa6E3 zFbd1OTr3T4yNUy4gNeQZfzDqDS8slbIks2sXeoJrZ6qqXVI0ionoivOlaN4T6Q0UYyXtigj dQvvhMt0aNowKFjRqrmSDRpdz+o6yg7Mp7qEZ1V6EZk8KqQTH6htpCTQ8i79ttK4LG6bstSF Re6Fwq52nbrcANrcdmtZXqjo+SGbUqJ8b1ggrxAsJ5MEhRh2peKrCgI/TjQo+ZxfnqEoR4AI 46Cyiz+/lcVvlvmf2iPifS3EEdaH3Itfwt7MxFm6mQORYs6skHDw3tOYB2/AdCW6eRVYs2hB RMAG4uwApZfZDKgRoE95PJmQjeTBiGmRPcsQZtNESe7I7EjHtCDLwtJqvD4HkDDQwpzreT6W XkyIJ7ns7zDfA1E+AQhFR6rsTFGgQZRZKsVeov3SbhYKkCnVDCvb/PKQCAGkSZM9SvYG5Yax 8CMry3AefKktf9fqBFg8pWqtVxDwJr56dhi0GHXRu3jVI995rMGo1fLUG5fSxiZ8L5sAtokh 9WFmQpyl Message-ID: <9d31fb68-df3e-76d3-195d-0da9749b0b1d@denninger.net> Date: Wed, 3 Jul 2019 08:51:23 -0500 User-Agent: Mozilla/5.0 (Windows NT 10.0; WOW64; rv:60.0) Gecko/20100101 Thunderbird/60.7.2 MIME-Version: 1.0 In-Reply-To: Content-Type: multipart/signed; protocol="application/pkcs7-signature"; micalg=sha-512; boundary="------------ms040305020201000706000708" X-Rspamd-Queue-Id: 4D522746A8 X-Spamd-Bar: ------ Authentication-Results: mx1.freebsd.org X-Spamd-Result: default: False [-6.99 / 15.00]; NEURAL_HAM_MEDIUM(-1.00)[-1.000,0]; NEURAL_HAM_SHORT(-0.99)[-0.988,0]; REPLY(-4.00)[]; NEURAL_HAM_LONG(-1.00)[-1.000,0] X-Content-Filtered-By: Mailman/MimeDel 2.1.29 X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 03 Jul 2019 13:52:01 -0000 This is a cryptographically signed message in MIME format. --------------ms040305020201000706000708 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable On 7/3/2019 08:42, Trond Endrest=C3=B8l wrote: > On Wed, 3 Jul 2019 13:34+0200, David Demelier wrote: > >> zpool status indicates that the blocksize is erroneous and that I may = expect >> performance degradation. But that much is impressive. Can someone conf= irm? >> >> # zpool status >> pool: tank >> state: ONLINE >> status: One or more devices are configured to use a non-native block s= ize. >> Expect reduced performance. >> action: Replace affected devices with devices that support the >> configured block size, or migrate data to a properly configure= d >> pool. >> scan: none requested >> config: >> >> NAME STATE READ WRITE CKSUM >> tank ONLINE 0 0 0 >> raidz1-0 ONLINE 0 0 0 >> gpt/zfs0 ONLINE 0 0 0 block size: 512B con= figured, 4096B native >> gpt/zfs1 ONLINE 0 0 0 block size: 512B con= figured, 4096B native >> >> errors: No known data errors >> >> >> >> According to some googling, I must update those pools to change the bl= ock >> size. However there are no many articles on that so I'm a bit afraid o= f doing >> this. The zfs0 and zfs1 are in raidz. >> >> Any help is very welcome. ashift=3D9 on a 4k native block device is going to do horrible things to performance.=C2=A0 There's no way to change it on an existing pool, as th= e other respondent noted; you will have to back up the data on the pool, destroy the pool and then re-create it. Was this pool originally created with 512b disks and then the drives were swapped out with a "replace" at some point for advanced-format units= ? The only downside to using ashift=3D12 on a 512b drive is a modest amount= of lost space in overhead, but given the risk that somewhere down the line you will swap the disk for a 4k one, and if you do you get forced to recreate the pool to get rid of the performance problem, I've had ashift=3D12 set as a default for a very long time. --=20 Karl Denninger karl@denninger.net /The Market Ticker/ /[S/MIME encrypted email preferred]/ --------------ms040305020201000706000708 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 DdgwggagMIIEiKADAgECAhMA5EiKghDOXrvfxYxjITXYDdhIMA0GCSqGSIb3DQEBCwUAMIGL MQswCQYDVQQGEwJVUzEQMA4GA1UECAwHRmxvcmlkYTESMBAGA1UEBwwJTmljZXZpbGxlMRkw FwYDVQQKDBBDdWRhIFN5c3RlbXMgTExDMRgwFgYDVQQLDA9DdWRhIFN5c3RlbXMgQ0ExITAf BgNVBAMMGEN1ZGEgU3lzdGVtcyBMTEMgMjAxNyBDQTAeFw0xNzA4MTcxNjQyMTdaFw0yNzA4 MTUxNjQyMTdaMHsxCzAJBgNVBAYTAlVTMRAwDgYDVQQIDAdGbG9yaWRhMRkwFwYDVQQKDBBD dWRhIFN5c3RlbXMgTExDMRgwFgYDVQQLDA9DdWRhIFN5c3RlbXMgQ0ExJTAjBgNVBAMMHEN1 ZGEgU3lzdGVtcyBMTEMgMjAxNyBJbnQgQ0EwggIiMA0GCSqGSIb3DQEBAQUAA4ICDwAwggIK AoICAQC1aJotNUI+W4jP7xQDO8L/b4XiF4Rss9O0B+3vMH7Njk85fZ052QhZpMVlpaaO+sCI KqG3oNEbuOHzJB/NDJFnqh7ijBwhdWutdsq23Ux6TvxgakyMPpT6TRNEJzcBVQA0kpby1DVD 0EKSK/FrWWBiFmSxg7qUfmIq/mMzgE6epHktyRM3OGq3dbRdOUgfumWrqHXOrdJz06xE9NzY vc9toqZnd79FUtE/nSZVm1VS3Grq7RKV65onvX3QOW4W1ldEHwggaZxgWGNiR/D4eosAGFxn uYeWlKEC70c99Mp1giWux+7ur6hc2E+AaTGh+fGeijO5q40OGd+dNMgK8Es0nDRw81lRcl24 SWUEky9y8DArgIFlRd6d3ZYwgc1DMTWkTavx3ZpASp5TWih6yI8ACwboTvlUYeooMsPtNa9E 6UQ1nt7VEi5syjxnDltbEFoLYcXBcqhRhFETJe9CdenItAHAtOya3w5+fmC2j/xJz29og1KH YqWHlo3Kswi9G77an+zh6nWkMuHs+03DU8DaOEWzZEav3lVD4u76bKRDTbhh0bMAk4eXriGL h4MUoX3Imfcr6JoyheVrAdHDL/BixbMH1UUspeRuqQMQ5b2T6pabXP0oOB4FqldWiDgJBGRd zWLgCYG8wPGJGYgHibl5rFiI5Ix3FQncipc6SdUzOQIDAQABo4IBCjCCAQYwHQYDVR0OBBYE FF3AXsKnjdPND5+bxVECGKtc047PMIHABgNVHSMEgbgwgbWAFBu1oRhUMNEzjODolDka5k4Q EDBioYGRpIGOMIGLMQswCQYDVQQGEwJVUzEQMA4GA1UECAwHRmxvcmlkYTESMBAGA1UEBwwJ TmljZXZpbGxlMRkwFwYDVQQKDBBDdWRhIFN5c3RlbXMgTExDMRgwFgYDVQQLDA9DdWRhIFN5 c3RlbXMgQ0ExITAfBgNVBAMMGEN1ZGEgU3lzdGVtcyBMTEMgMjAxNyBDQYIJAKxAy1WBo2kY MBIGA1UdEwEB/wQIMAYBAf8CAQAwDgYDVR0PAQH/BAQDAgGGMA0GCSqGSIb3DQEBCwUAA4IC AQCB5686UCBVIT52jO3sz9pKuhxuC2npi8ZvoBwt/IH9piPA15/CGF1XeXUdu2qmhOjHkVLN gO7XB1G8CuluxofOIUce0aZGyB+vZ1ylHXlMeB0R82f5dz3/T7RQso55Y2Vog2Zb7PYTC5B9 oNy3ylsnNLzanYlcW3AAfzZcbxYuAdnuq0Im3EpGm8DoItUcf1pDezugKm/yKtNtY6sDyENj tExZ377cYA3IdIwqn1Mh4OAT/Rmh8au2rZAo0+bMYBy9C11Ex0hQ8zWcvPZBDn4v4RtO8g+K uQZQcJnO09LJNtw94W3d2mj4a7XrsKMnZKvm6W9BJIQ4Nmht4wXAtPQ1xA+QpxPTmsGAU0Cv HmqVC7XC3qxFhaOrD2dsvOAK6Sn3MEpH/YrfYCX7a7cz5zW3DsJQ6o3pYfnnQz+hnwLlz4MK 17NIA0WOdAF9IbtQqarf44+PEyUbKtz1r0KGeGLs+VGdd2FLA0e7yuzxJDYcaBTVwqaHhU2/ Fna/jGU7BhrKHtJbb/XlLeFJ24yvuiYKpYWQSSyZu1R/gvZjHeGb344jGBsZdCDrdxtQQcVA 6OxsMAPSUPMrlg9LWELEEYnVulQJerWxpUecGH92O06wwmPgykkz//UmmgjVSh7ErNvL0lUY UMfunYVO/O5hwhW+P4gviCXzBFeTtDZH259O7TCCBzAwggUYoAMCAQICEwCg0WvVwekjGFiO 62SckFwepz0wDQYJKoZIhvcNAQELBQAwezELMAkGA1UEBhMCVVMxEDAOBgNVBAgMB0Zsb3Jp ZGExGTAXBgNVBAoMEEN1ZGEgU3lzdGVtcyBMTEMxGDAWBgNVBAsMD0N1ZGEgU3lzdGVtcyBD QTElMCMGA1UEAwwcQ3VkYSBTeXN0ZW1zIExMQyAyMDE3IEludCBDQTAeFw0xNzA4MTcyMTIx MjBaFw0yMjA4MTYyMTIxMjBaMFcxCzAJBgNVBAYTAlVTMRAwDgYDVQQIDAdGbG9yaWRhMRkw FwYDVQQKDBBDdWRhIFN5c3RlbXMgTExDMRswGQYDVQQDDBJrYXJsQGRlbm5pbmdlci5uZXQw ggIiMA0GCSqGSIb3DQEBAQUAA4ICDwAwggIKAoICAQC+HVSyxVtJhy3Ohs+PAGRuO//Dha9A 16l5FPATr6wude9zjX5f2lrkRyU8vhCXTZW7WbvWZKpcZ8r0dtZmiK9uF58Ec6hhvfkxJzbg 96WHBw5Fumd5ahZzuCJDtCAWW8R7/KN+zwzQf1+B3MVLmbaXAFBuKzySKhKMcHbK3/wjUYTg y+3UK6v2SBrowvkUBC+jxNg3Wy12GsTXcUS/8FYIXgVVPgfZZrbJJb5HWOQpvvhILpPCD3xs YJFNKEPltXKWHT7Qtc2HNqikgNwj8oqOb+PeZGMiWapsatKm8mxuOOGOEBhAoTVTwUHlMNTg 6QUCJtuWFCK38qOCyk9Haj+86lUU8RG6FkRXWgMbNQm1mWREQhw3axgGLSntjjnznJr5vsvX SYR6c+XKLd5KQZcS6LL8FHYNjqVKHBYM+hDnrTZMqa20JLAF1YagutDiMRURU23iWS7bA9tM cXcqkclTSDtFtxahRifXRI7Epq2GSKuEXe/1Tfb5CE8QsbCpGsfSwv2tZ/SpqVG08MdRiXxN 5tmZiQWo15IyWoeKOXl/hKxA9KPuDHngXX022b1ly+5ZOZbxBAZZMod4y4b4FiRUhRI97r9l CxsP/EPHuuTIZ82BYhrhbtab8HuRo2ofne2TfAWY2BlA7ExM8XShMd9bRPZrNTokPQPUCWCg CdIATQIDAQABo4IBzzCCAcswPAYIKwYBBQUHAQEEMDAuMCwGCCsGAQUFBzABhiBodHRwOi8v b2NzcC5jdWRhc3lzdGVtcy5uZXQ6ODg4ODAJBgNVHRMEAjAAMBEGCWCGSAGG+EIBAQQEAwIF oDAOBgNVHQ8BAf8EBAMCBeAwHQYDVR0lBBYwFAYIKwYBBQUHAwIGCCsGAQUFBwMEMDMGCWCG SAGG+EIBDQQmFiRPcGVuU1NMIEdlbmVyYXRlZCBDbGllbnQgQ2VydGlmaWNhdGUwHQYDVR0O BBYEFLElmNWeVgsBPe7O8NiBzjvjYnpRMIHKBgNVHSMEgcIwgb+AFF3AXsKnjdPND5+bxVEC GKtc047PoYGRpIGOMIGLMQswCQYDVQQGEwJVUzEQMA4GA1UECAwHRmxvcmlkYTESMBAGA1UE BwwJTmljZXZpbGxlMRkwFwYDVQQKDBBDdWRhIFN5c3RlbXMgTExDMRgwFgYDVQQLDA9DdWRh IFN5c3RlbXMgQ0ExITAfBgNVBAMMGEN1ZGEgU3lzdGVtcyBMTEMgMjAxNyBDQYITAORIioIQ zl6738WMYyE12A3YSDAdBgNVHREEFjAUgRJrYXJsQGRlbm5pbmdlci5uZXQwDQYJKoZIhvcN AQELBQADggIBAJXboPFBMLMtaiUt4KEtJCXlHO/3ZzIUIw/eobWFMdhe7M4+0u3te0sr77QR dcPKR0UeHffvpth2Mb3h28WfN0FmJmLwJk+pOx4u6uO3O0E1jNXoKh8fVcL4KU79oEQyYkbu 2HwbXBU9HbldPOOZDnPLi0whi/sbFHdyd4/w/NmnPgzAsQNZ2BYT9uBNr+jZw4SsluQzXG1X lFL/qCBoi1N2mqKPIepfGYF6drbr1RnXEJJsuD+NILLooTNf7PMgHPZ4VSWQXLNeFfygoOOK FiO0qfxPKpDMA+FHa8yNjAJZAgdJX5Mm1kbqipvb+r/H1UAmrzGMbhmf1gConsT5f8KU4n3Q IM2sOpTQe7BoVKlQM/fpQi6aBzu67M1iF1WtODpa5QUPvj1etaK+R3eYBzi4DIbCIWst8MdA 1+fEeKJFvMEZQONpkCwrJ+tJEuGQmjoQZgK1HeloepF0WDcviiho5FlgtAij+iBPtwMuuLiL shAXA5afMX1hYM4l11JXntle12EQFP1r6wOUkpOdxceCcMVDEJBBCHW2ZmdEaXgAm1VU+fnQ qS/wNw/S0X3RJT1qjr5uVlp2Y0auG/eG0jy6TT0KzTJeR9tLSDXprYkN2l/Qf7/nT6Q03qyE QnnKiBXWAZXveafyU/zYa7t3PTWFQGgWoC4w6XqgPo4KV44OMYIFBzCCBQMCAQEwgZIwezEL MAkGA1UEBhMCVVMxEDAOBgNVBAgMB0Zsb3JpZGExGTAXBgNVBAoMEEN1ZGEgU3lzdGVtcyBM TEMxGDAWBgNVBAsMD0N1ZGEgU3lzdGVtcyBDQTElMCMGA1UEAwwcQ3VkYSBTeXN0ZW1zIExM QyAyMDE3IEludCBDQQITAKDRa9XB6SMYWI7rZJyQXB6nPTANBglghkgBZQMEAgMFAKCCAkUw GAYJKoZIhvcNAQkDMQsGCSqGSIb3DQEHATAcBgkqhkiG9w0BCQUxDxcNMTkwNzAzMTM1MTI0 WjBPBgkqhkiG9w0BCQQxQgRAai5M3Ppq9IfmizRV/T9qmxrb5quesZV/CjKA3hrem2V2/CkO vmD09aVo4Y6ub0EyYRm4V3bdKCtk9+Q0hPLrlTBsBgkqhkiG9w0BCQ8xXzBdMAsGCWCGSAFl AwQBKjALBglghkgBZQMEAQIwCgYIKoZIhvcNAwcwDgYIKoZIhvcNAwICAgCAMA0GCCqGSIb3 DQMCAgFAMAcGBSsOAwIHMA0GCCqGSIb3DQMCAgEoMIGjBgkrBgEEAYI3EAQxgZUwgZIwezEL MAkGA1UEBhMCVVMxEDAOBgNVBAgMB0Zsb3JpZGExGTAXBgNVBAoMEEN1ZGEgU3lzdGVtcyBM TEMxGDAWBgNVBAsMD0N1ZGEgU3lzdGVtcyBDQTElMCMGA1UEAwwcQ3VkYSBTeXN0ZW1zIExM QyAyMDE3IEludCBDQQITAKDRa9XB6SMYWI7rZJyQXB6nPTCBpQYLKoZIhvcNAQkQAgsxgZWg gZIwezELMAkGA1UEBhMCVVMxEDAOBgNVBAgMB0Zsb3JpZGExGTAXBgNVBAoMEEN1ZGEgU3lz dGVtcyBMTEMxGDAWBgNVBAsMD0N1ZGEgU3lzdGVtcyBDQTElMCMGA1UEAwwcQ3VkYSBTeXN0 ZW1zIExMQyAyMDE3IEludCBDQQITAKDRa9XB6SMYWI7rZJyQXB6nPTANBgkqhkiG9w0BAQEF AASCAgAMPXK8XWm2ove/q+MU0pBVE4VfmLbjY2p6KH/4Gt6k8W4D7l2zdy9dyoATm1rELdet zZI88bLT1RbODBN4VpGK4oZV20mAk8iPlCacC9/sHnXZrf6i8Ff+9UBdNj5tBrAjR9uGJVBH 4En2M+fxufKq+UTIH06PLj+GJw7+5IhoQro2JoXHibuNVQaGfcwVevg19r95+06d3MNlkd+D 34B5R4nHvkFqiKr6sXJCeOd8TEjhQXh7CarukuA760GDt1/C9aeBvRf5vDgXFBNgJTLtnHTX P5rRzDAecEsjr3u41kjy8BFwQq1xfpiV2k/TUPhdubEJS63uzwcv0gnQLhxYJljKEsa7FIzM 1TDKGnhVMsBrRv1bf4Gf0KIH/tOBHInxtSHMaD7f9tLJ94iZQ0v7Hgwo0FgnN6noX/DQp1Po kxmTZ9Oqtu3RX0XulmLnr6//VDaU8ogRitg4Jnxeko9UVDLdzlPSZgToZ/9+cU2F1nhKjiw5 kUeAeQOs0kbuhpx2Bx2Gii72YpcczA9IWs1hpl/a30Fxw+PYvJpvl0nykOX4+hf53dykS0WP jdIr0XKegQaE/mpQbyfhiSR8FLpswfVLrLbOUI33I2NVPxRTry0Uil4vIp0xj9bJ4PHrk0bI pXAou/gGcj0y3hGE2eZH6uOK6xH4xxw6HOMhanoJbAAAAAAAAA== --------------ms040305020201000706000708--