Date: Thu, 06 Feb 2003 15:18:15 -0800 From: Lars Eggert <larse@ISI.EDU> To: current <current@FreeBSD.ORG> Subject: read/write errors with USB CF reader Message-ID: <3E42ED37.60406@isi.edu>
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This is a cryptographically signed message in MIME format. --------------ms000306030807010700070705 Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit Hi, (this is unrelated to my earlier post about the kernel panic.) when doing I/O to an IBM microdrive mounted via an USB CF reader, I get read/write errors about once an hour or so. Here's an example: dd if=/dev/zero of=/dev/da1 bs=512 count=32 dd: /dev/da1: Input/output error 1+0 records in 0+0 records out 0 bytes transferred in 0.905537 secs (0 bytes/sec) *** Error code 1 Relevant syslog excerpt: umass0: SanDisk Corporation ImageMate CompactFlash USB, rev 1.10/0.09, addr 2 umass0: Get Max Lun not supported (STALLED) da1 at umass-sim0 bus 0 target 0 lun 0 da1: <SanDisk ImageMate II 1.30> Removable Direct Access SCSI-2 device da1: 1.000MB/s transfers da1: 1027MB (2104705 512 byte sectors: 255H 63S/T 131C) umass0: BBB reset failed, STALLED (da1:umass-sim0:0:0:0): AutoSense Failed umass0: BBB reset failed, STALLED (da1:umass-sim0:0:0:0): AutoSense Failed umass0: BBB reset failed, STALLED (da1:umass-sim0:0:0:0): AutoSense Failed Retrying the failed command usually works (and the dd above was just an example, I've seen it happen with dump/restore, tar, or make.) Also, this may not be specific to -current, I think I saw it on -STABLE as well a while ago. The microdrive itself is fine, I also mount it with a CF PC-card adaptor, and have never seen an error then. Any clues? Thanks, Lars -- Lars Eggert <larse@isi.edu> USC Information Sciences Institute --------------ms000306030807010700070705 Content-Type: application/x-pkcs7-signature; name="smime.p7s" Content-Transfer-Encoding: base64 Content-Disposition: attachment; filename="smime.p7s" Content-Description: S/MIME Cryptographic Signature MIAGCSqGSIb3DQEHAqCAMIACAQExCzAJBgUrDgMCGgUAMIAGCSqGSIb3DQEHAQAAoIIJtjCC AzgwggKhoAMCAQICEGZFcrfMdPXPY3ZFhNAukQEwDQYJKoZIhvcNAQEEBQAwgdExCzAJBgNV BAYTAlpBMRUwEwYDVQQIEwxXZXN0ZXJuIENhcGUxEjAQBgNVBAcTCUNhcGUgVG93bjEaMBgG A1UEChMRVGhhd3RlIENvbnN1bHRpbmcxKDAmBgNVBAsTH0NlcnRpZmljYXRpb24gU2Vydmlj ZXMgRGl2aXNpb24xJDAiBgNVBAMTG1RoYXd0ZSBQZXJzb25hbCBGcmVlbWFpbCBDQTErMCkG CSqGSIb3DQEJARYccGVyc29uYWwtZnJlZW1haWxAdGhhd3RlLmNvbTAeFw0wMDA4MzAwMDAw MDBaFw0wNDA4MjcyMzU5NTlaMIGSMQswCQYDVQQGEwJaQTEVMBMGA1UECBMMV2VzdGVybiBD YXBlMRIwEAYDVQQHEwlDYXBlIFRvd24xDzANBgNVBAoTBlRoYXd0ZTEdMBsGA1UECxMUQ2Vy dGlmaWNhdGUgU2VydmljZXMxKDAmBgNVBAMTH1BlcnNvbmFsIEZyZWVtYWlsIFJTQSAyMDAw 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