Date: Wed, 26 Feb 2014 13:17:14 +0100 From: Matthias Apitz <guru@unixarea.de> To: freebsd-questions@freebsd.org Subject: errors from external USB disk Message-ID: <20140226121714.GA1532@tiny-r255948>
next in thread | raw e-mail | index | archive | help
Hello, I'm using this external USB device in FreeBSD 10-CURRENT: Nov 23 11:40:38 tiny root: Unknown USB device: vendor 0x07ab product 0xfc8e bus uhub4 Nov 23 11:40:38 tiny kernel: ugen4.3: <Freecom> at usbus4 Nov 23 11:40:38 tiny kernel: umass1: <Bulk Only Interface> on usbus4 Nov 23 11:40:38 tiny kernel: umass1: SCSI over Bulk-Only; quirks = 0x0000 Nov 23 11:40:39 tiny kernel: umass1:1:1:-1: Attached to scbus1 Nov 23 11:40:39 tiny kernel: da1 at umass-sim1 bus 1 target 0 lun 0 Nov 23 11:40:39 tiny kernel: da1: <Freecom Hard Drive XS 1.00> Fixed Direct Access SCSI-2 device Nov 23 11:40:39 tiny kernel: da1: 40.000MB/s transfers Nov 23 11:40:39 tiny kernel: da1: 1430799MB (2930277168 512 byte sectors: 255H 63S/T 182401C) This is mostly used to store dumps of the file systems of the server on one big UFS file system on da1s1a. Sometimes, after the dump finished, a re-read of the file to get the MD5 checksum results in errors and I was highly concerned about the integrity of my dumps on this device. I bought another 2.5 TB disk and was able to copy all the files (around 1TB) over, i.e. the device could now be owerwritte while testing. What is the best way to run a test on the disk? I'm thinking in something like reading/writing the block in place for many days (it's around 1.5 TB). Any ideas? Thanks matthias -- Matthias Apitz t +49-89-61308 351 - f +49-89-61308 399 - m +49-170-4527211 e <guru@unixarea.de> - w http://www.unixarea.de/ UNIX since V7 on PDP-11, UNIX on mainframe since ESER 1055 (IBM /370) UNIX on x86 since SVR4.2 UnixWare 2.1.2, FreeBSD since 2.2.5 _______________________________________________ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to "freebsd-questions-unsubscribe@freebsd.org" ----- End forwarded message ----- -- Sent from my FreeBSD netbook Matthias Apitz, <guru@unixarea.de>, http://www.unixarea.de/ f: +49-170-4527211 UNIX since V7 on PDP-11, UNIX on mainframe since ESER 1055 (IBM /370) UNIX on x86 since SVR4.2 UnixWare 2.1.2, FreeBSD since 2.2.5
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?20140226121714.GA1532>