Re: Bugs while using encrypted HAMMER root fs

[Matthew Dillon <dillon@xxxxxxxxxxxxxxxxxxxx>]

:
:* Matthias Schmidt wrote:
:> Moin,
:> 
:> I installed a recent master (2.7.3.1095.g4cdde1) on my old IBM Thinkpad
:> T42 and I installed the system on an encrypted HAMMER root volume.
:> While installing packages and using X I made some observations:
:> 
:> - After a crash, the "loader" in the initial ramdisk is no longer able
:>   to load the real init.  It displays all HAMMER related messages about
:>   an unclean file system and stops right after "recovery complete".  I
:>   can move the cursor and panic the system, but nothing else happens.
:>   Rebooting the live CD and mounting the partition fixes the problem.
:
:I can reproduce it.  Every time I run "hammer cleanup" the system
:freezes.
:
:Cheers
:
:	Matthias

    How much memory does this system have?  The problem is almost
    certainly buffer cache / memory-exhaustion.  The crypto layer
    uses memory heavily.  We need a kernel panic / kernel core
    when it gets stuck to verify that is the issue.  Swap cannot
    be encrypted if you want the kernel core to have a chance of
    succeeding in this situation.

    Both hammer cleanup and crypto are heavy kernel memory users.

					-Matt
					Matthew Dillon 
					<dillon@backplane.com>