On Sat, 16 Jun 2012 17:13:26 +0000 (UTC) "Camaleón noela...@gmail.com" suggested this:
>On Sat, 16 Jun 2012 08:14:03 +1000, Charlie wrote: > >> This happens with both powered and powered only through a USB >> connection, external hard drives. Both with ext3 file systems: >> >> Message from syslogd@nomad at Jun 16 08:04:30 ... >> kernel:[ 3187.986721] journal commit I/O error > >Being USB volumes in external enclosures it can be that they were >badly umounted and thus the message. I would run "fsck" over the >umounted volumes to check for any errors in the filesystem. True, and I am reluctant to bring the devil to the door by saying that I've never yet forgotten to unmount a file system before pulling the plug. Because should I do so, it would happen almost instantly that I would do just that. I did run fsck over it, thank you for the suggestion and there were no errors. Furthermore for the last few mounts, it has mounted correctly as /dev/sdb1 but here's the trick: I've always recorded that volume in /etc/fstab by its UUID, and doing that suddenly developed the problem. It would mount and suddenly drop out, and not be remountable. Even if I reworked /etc/fstab and changed the device allocation as it showed up in blkid. I have abandoned UUID and now record it as /dev/sdb1 in /etc/fstab and it would appear after 10 mounts, that the problem is no more. That could be coincidence, because the system now always correctly identifies the disk as /dev/sdb1 no longer on occasion as /dev/sdd1. So further to this. If I also put say, a card reader into another USB port, and try to mount it as /media/usb0 and have the USB connected external harddisk mounted. The message is that /dev/sdb1 is already mounted. So in my /etc/fstab I have included the card reader as /dev/sdc1 and both work at the same time. I haven't yet tried mounting both external hard drives at the same time, but don't expect any problems now. Interesting isn't it, and I haven't worked out yet why that's happening, but then I'm not dead yet either. Thanks for your helpful suggestions. Be well, Charlie -- ** ** ** ** ** ** ** ** ** ** Registered Linux User:- 329524 *********************************************** Nature makes no mistakes. In such a universe, a decision which results in one's death, is not a mistake. It is simply a way of dying at the right moment. --Alan Watts *********************************************** Debian GNU/Linux - just the best way to create magic _______________________________________________ -- To UNSUBSCRIBE, email to debian-user-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org Archive: http://lists.debian.org/20120617084349.091ef209@nomad
