Re: Hammer: processes blocked on a file

[Matthew Dillon <dillon@xxxxxxxxxxxxxxxxxxxx>]

: 
:>     Ok, get a kernel core onto leaf and I'll look at it.
:
:I still cannot make cores (That's subject to another bugreport. :-P)
:
:-- 
:Gergo Szakal MD <bastyaelvtars@gmail.com>

    Try putting this in your /etc/sysctl.conf:

    kern.sync_on_panic=0

    This stops the kernel from trying to sync the buffer cache on panic.
    Often when debugging VFS issues the kernel can lockup before the dump
    when it tries to sync the buffer cache.

    The other usual suspects are:

    * /var/crash does not have enough space and

    * swap space is not big enough (must be >= amount of main memory).

    * kernel binary does not match kernel core.  Usually this means the
      /kernel file is not the kernel that was actually running.

					-Matt
					Matthew Dillon 
					<dillon@backplane.com>