Re: [Xen-devel] xen 4.0.1 w/2.6.32.47 hangs at boot

[Quartexx <quartex73@xxxxxxxxx>]

2011/12/14 Konrad Rzeszutek Wilk <konrad@xxxxxxxxxx>:
> I would hazzard a guess that it is something with the 3ware driver.
> Can you configure Alt-SysRq so that you can see the stack trace of
> dom0 and where it hanged? And also do Ctrl-Ax3 and press 'q' to see
> where dom0 is stuck? It should print out a bunch of 0xff.. and I can
> help you debug what that is in the dom0 kernel so we can figure out
> what is happening.


Thanks, I would try that as soon as possible (unfortunately this box
is in a remote datacenter)
Googling I found this
https://bugzilla.redhat.com/show_bug.cgi?id=429937
They suggest to rebuild initrd including scsi_wait_scan module.
Another workaround could be to use rootdelay in the kernel command line
Worth a try or a waste of time?


> Or you can also try the latest kernel - 3.0.x and see if the problem
> appears there as well - which is much easier for us to fix and has
> some other important fixes that won't be back-ported to 2.6.32.

Since I'm using blktap2 I'm concerned about upgrading to 3.0.x.  I
have read bad feedback about blktap-dkms.  Are my concerns unfounded?
 Are there any alternative to blktap2 (excluding LVM)?
Thanks

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