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[NMLUG] encrypted loopback filesystems
On Wed, Jan 05, 2005 at 01:37:00PM -0700, Jody Harris
carved this out of pure phosphors:
> losetup without '-e' works fine.
>
> Also, (mke2fs) + (mount -o loop ...) works fine.
>
> so, it's not an losetup or loopback problem. Seems something
> crypto-related is missing in my kernel.
>
> I've messed with modprob to force the loading the twofish and blowfish
> crypto systems, but I still get the 'not supported by kernel' message.
>
> Here's the uname output for my kernel:
> 2.6.8-24.10-default #2 Wed Jan 5 10:28:09 MST 2005 i686 athlon i386
> GNU/Linux
>
> What am I overlooking here?
What does the dmesg say. Look in /var/log/messages or the like.
>
> jody
>
> Sarang wrote:
> >Dumb questions:
> >
> >% Did you try "losetup -e NONE"?
> >
> >% Did you try "mke2fs filename" and then "mount -o loop -t ext2 filename
> >/mnt"
> >instead of losetup?
> >
> >--
> >Sincerely, Sarang (sarang@sarangworld.com)
> >AOL Instant Messenger ID: JavaMath
> >Backup Email: saranghome@softhome.net
> ><html><img
> >src='http://noproxy.sarangworld.com/EXP/rr.php?20050105.130656'></html>
> >
> >On Wed, 5 Jan 2005, Jody Harris wrote:
> >
> >>Date: Wed, 05 Jan 2005 11:38:28 -0700
> >>From: Jody Harris <havoc@harrisdev.com>
> >>Reply-To: New Mexico Linux Users Group Mail List <nmlug@nmlug.org>
> >>To: New Mexico Linux Users Group Mail List <nmlug@nmlug.org>
> >>Subject: [NMLUG] encrypted loopback filesystems
> >>
> >>Using dd, I created an empty "disk image."
> >>
> >>I then attempted to use losetup to create an filesystem on that image,
> >>but I keep getting:
> >>ioctl: LOOP_SET_STATUS: Invalid argument, requested cipher or key length
> >>(128 bits) not supported by kernel
> >>
> >>So, I recompiled the kernel with all of the crypto options turned on.
> >>Even with the new kernel, I'm still getting the "not supported" message.
> >>
> >>Apparently, I overlooked something in the kernel configuration. What
> >>should I be looking for?
> >>
> >>thanks,
> >>jody
>
>
> --
> http://www.RealizationSystems.com/ -- start communicating
> http://www.GalacticSlacker.com/ -- read it and weep
> http://www.NMPerspective.com/ -- a Southwest Perspective
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--
panic("esp_handle: current_SC == penguin within interrupt!");
linux-2.2.16/drivers/scsi/esp.c
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