[pkg-cryptsetup-devel] Bug#576186: Bug#576186: cryptsetup: Setting up crypto device on Startup takes too long w/ ext3

[Jonas Meurer]

Hi Markus,

On 30/06/2010 Markus Melms wrote:
> cryptsetup version has been (and still is) 1.0.6.

please provide the additional information that Milan requested:

> >> In order to check whether using so much time is normal, I bought another
> >> harddisk of the same type and mirrored my system to this new disk using
> >> the "dd" command. Mounting this disk (via usb) when the system is
> >> startet up already takes less then 2 seconds. 
> 
> You mean dd whole disk including LUKS or just fs?
> 
> >> Therefore i believe that some bug is causing cryptsetup to wait 50
> >> seconds before doing something sensible.
> > 
> > i cannot imagine that this is related to the filesystem at all. dm-crypt
> > doesn't mind the content of the encrypted device.
> 
> Unlocking time is calculated to take 1 second on the system where it
> was formatted. Moving to another slower system will increase unlocking time,
> but 50s is very long even for such situation...
> (isn't it udev timeout instead?)
> 
> Can you try to unlock it manually, add debug and check whete it spend
> most of time? I mean run
> cryptsetup --debug luksOpen /dev/sda3 sda3_crypt
> 
> please also paste here crypsetup luksDump /dev/sda3
> 
> Anyway, if it is really problem with cryptsetup unlocking, you can fix it
> by adding new passphrase (it can be the same) to new keyslot and then
> kill old slot - this will recalculate iteration time leaving data intact.

greetings,
 jonas
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