[pkg-cryptsetup-devel] Bug#644082: Some more investigations

[Jonas Meurer]

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Am 27.10.2011 17:14, schrieb Bernhard:
> Hello Jonas
> 

Hello Bernhard, and sorry for the very long delay.

Do you still discover the described bug? I'm still pretty sure, that
it's not a bug in cryptsetup. Maybe some other packages changed in the
meanwhile, and the bug was fixed? In that case I'd like to close this
bugreport. If you still discover the bug, I'll try do do further
investigation as soon as I've some spare time.

Kind regards,
 jonas


> Thank you for your great support. I have tested some things on my
> test computer (Debian sid):
> 
>> That doesn't imply that it's a bug in cryptsetup. It might as
>> well be a bug in gnome, udev, linux kernel, etc.
> Yes, that's true. But i don't know, which package has the bug. Do
> you have any idea? Is this behaviour reproducable on your
> computer? Today, i have setup a second test computer with Debian
> sid. The same behaviour.
> 
>> Do the processes which access the filesystem (scsi_eh_5 and
>> usb-storage) disappear after some time?
> After error message, i have waited 1 minute. The processes don't
> disappear.
> 
>> You should check which processes read/write to the device by
>> executing 'lsof <device>' (e.g.
>> '/dev/mapper/udisks-luks-uuid-1234-5678-90ab-cdef12345678-uid1000')
>
>> 
No output.
> /dev/mapper/udisks-luks-uuid-xxxx is a link. Is this correct? After
> unmount, /dev/mapper/udisks-luks-uuid-xxxx is no more available
> 
>> and 'fuser -m <mount_point>', (e.g.
>> '/media/fedcba09-8765-4321-fedc-ba09-87654321fedc').
> No output. After unmount, /media/xxxx is no more available.
> 
>> This indeed sounds like a udev-related bug then. Please do
>> further investigation.
> I have looked in internet with Google and found an interesting bug 
> report for Ubuntu:
>> https://bugs.launchpad.net/ubuntu/+source/cryptsetup/+bug/529502
> It seems, there is a problem with the unmounting sequence (umount
> and luksClose). If i mount and unmount my encrypted device in
> Terminal, everything seems fine. Only for information: my encrypted
> device is formatted with ext4.
> 
> If i should further tests, please let me know.
> 
> Best regards and thank you for the great support. Bernhard
> 

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