Date: Fri, 11 Jan 2019 23:31:55 -0800 From: Kevin Oberman <rkoberman@gmail.com> To: FreeBSD Stable ML <stable@freebsd.org> Subject: USB disks dropping off-line Message-ID: <CAN6yY1vRY8L_L43=MwTJCDOTo5jwMnppL-LkbR8aU4oy1iGAjA@mail.gmail.com>
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Que Twilight Zone theme. For your consideration: This started in December when I was running 11.2-STABLE. Starting in December, when I try to backup my laptop to a USB drive, it periodically dropped off-line (disconnected) and immediately reconnected. This was originally using rsync. It seemed fairly random and, eventually I got a successful backup. After I upgraded to 12.0, it was much worse and I could no longer get a clean rsync. I assumed that the drive was failing and swapped it for an identical one, re-partitioned, and used dd to copy each partition. The same thing happened, but I noticed that it seemed to happen when the system was a bit active. I then shutdown X and tried with nothing else running. It ran for a few minutes until I did a sync from a different login while the dd was running. Boom. Disk disconnected again. I finally got an almost complete backup of /usr. I had about 1-2 GB lest when it happened again. I suspect that some background operation (periodic sync?) triggered it again. Any suggestions? Here is my system info: Lenovo T520 now running FreeBSD 12.0-STABLE r342788 and GENERIC config except SCHED_4BSD. System is completely stable except for the USB disk dropping off-line. Disk is a 2TB WD My Passport. It is a USB 3.0 drive,but plugged intoa 2.0 port. (The T520 has no 3.0 capability. Has anyone seen anything like this? Any ideas? I am REALLY nervous running without a backup. -- Kevin Oberman, Part time kid herder and retired Network Engineer E-mail: rkoberman@gmail.com PGP Fingerprint: D03FB98AFA78E3B78C1694B318AB39EF1B055683
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