SHORT VERSION: udev daemon to be blamed?! __________________________________________
LONG VERSION: @Akos Ladanyi: very true, sorry, I forgot to test "init 1" prior to blaming the kernel. Works for me too in single user mode. BTW: I see no errors related to issuing the SCSI stop command in the logs, nor when using the commands' --verbose options, neither when it works nor when it doesn't. Tried with sdparm, scsi-spin (always gives timeout after 8 sec and resets SCSI card since the disc takes 12 sec to spin up) and sg_start. They all issue the same 1b command... So I rebooted and after loggin in (at runlevel 2) I manually stopped all services (except sshd) and issued "sdparm -C stop /dev/sdb" again: works fine! (I always test standby using the command "smartctl --all --nocheck standby --device=3ware,3 /dev/twa0") Now I started udev daemon "/etc/init.d/udev start", and that alone spun up the disc! (Can anyone confirm this?) And: "sdparm -C stop /dev/sdb" and "smartctl --all --nocheck standby --device=3ware,3 /dev/twa0" don't work any more. So It looks like a problem with udev!? In /var/log/messages I get "udev: deprecated sysfs layout; update the kernel or disable CONFIG_SYSFS_DEPRECATED; some udev features will not work correctly" after starting it. From /usr/share/doc/udev/changelog.Debian.gz I see that there have been major changes including SCSI issues when intruducing new upstream in Version 140. ___ But strangely if I - switch off computer - wait :-) - switch it on again (boots to runlevel 2 w/o GUI) - log in as root - "sdparm -C stop /dev/sdb" results in the bug described earlier - issue "init 1" - press Ctrl-D (without entering single user mode) to resume normal operation - log in as root again - "sdparm -C stop /dev/sdb" now works as expected, too! Although udev is up and running. ????????????? The only odd thin I noticed is that 4 lines before the single user root password prompt appears, there was an error "outside expected code flow". -- not proper dismounting for WD passport harddrive (making noise when unplug) https://bugs.launchpad.net/bugs/117713 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
