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FreeBSD General Other questions regarding FreeBSD which do not fit in any of the categories below. |
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I'm running FreeBSD 7.0-p3 and I've got a 1TB Seagate SATA drive in a Laser USB caddy, formatted as FAT32 in two partitions 499GB and the rest on the second.
When I connect the drive up and start to mount the first partition it freezes my machine after a few seconds. Unplugging the drive doesn't change anything. I have tried different USB ports, I'm currently testing this using the USB ports on the motherboard itself. I'm using an ASUS A8V Deluxe. |
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It doesn't happen everytime, but it is when I mount the drive. Sometimes whilst it's mounting the hang will occur other times it could be running for a few hours and hang. I've been using this machine and have had it running 100 days without a problem until I start using USB media. I had this same problem on other FreeBSD machines.
The problem does not happen if I just plugin the drive and leave it there unmounted. Here is what I get in my dmesg when I connect the drive, pretty standard output: Code:
da0 at umass-sim0 bus 0 target 0 lun 0 da0: <ST310003 40AS > Fixed Direct Access SCSI-2 device da0: 40.000MB/s transfers da0: 953869MB (1953525168 512 byte sectors: 255H 63S/T 121601C) Also if I mount a USB drive, then remove it without umounting (which I know is wrong), this hangs the computer under FreeBSD but this doesn't happen on Debian is there a reason for this? It seems the only stability problems I have with FreeBSD all come down to the USB devices on my machines. |
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Many Linuces now kind of auto-mount drives/slices they discover. Feature or annoyance?
Thes slices are dynamically mounted as /media/disk, media/disk-1, media/disk-2, ... These mount points are transient: contrary to mount points you define in the /etc/fstab (you needed to mkdir for), at another reboot those transient mount points will reflect the hardware as existing at that time. My observation, I don't know the name of the mechanism. Tip: label your slices. FAT-32 large drives. Not all fdisks are created equal , *BSD fdisk's can describe very large disks. Some DOSes still have a 82/137 GB limit. Terabytes external USB drives. Usually are sold as Windows compatible. They even include backup software and other goodies. (and a driver !!!) Repartitioning such drives is a bad idea. Own made USB/eSATA externals. As said, use a *BSD fdisk to be certain. Or, since you use FAT-32, first partition and format the drive with your Windows OS and test it a while under Windows. Then only try it with other OSes.
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da more I know I know I know nuttin' |
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Is there a way to setup FreeBSD so that 'mount points are transient' like linux. I find the the USB stack under debian based systems much more stable.
For instance if you mount a USB under FreeBSD and remove it without unmounting, then reinsert the USB flash drive, FreeBSD hangs. If I do the same under debian it's fine. I really like FreeBSD for it's package system, security and stability, but it is annoying if you forget to unmount and it hangs your machine. I know that you should always unmount but if you don't it shouldn't crash the system, is there anyway to fix this? |
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"UNIX is basically a simple operating system, but you have to be a genius to understand the simplicity." MacBook Pro (Darwin 9), iMac (Darwin 9), iPod Touch (Darwin 9), Dell Optiplex GX620 (FreeBSD 7.1-STABLE) |
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