problem possibly related to multi-ip jail patch?

Lorenzo Perone lopez.on.the.lists at
Mon Nov 17 14:42:12 PST 2008

sorry for posting that crap - turns out I forgot
vfs.zfs.prefetch_disable="1" in loader.conf and that had the fatal
consequences, which were related to zfs rather than to Bjoern's patch.

the jails patch works as expected so far and turned out to be
unrelated to the problems described.

Regards and apologies,


On 16.11.2008, at 05:27, Lorenzo Perone wrote:

> Hi all,
> I've been experiencing problems with one of the machines running  
> FreeBSD 7.1-PRERELEASE #2: Thu Oct 16 20:23:09 CEST 2008 with the  
> multi-ip patch bz_jail7-20080920-01-at150161.diff, and I'm wondering  
> if it possibly related to the patch - in any case, any advice would  
> be very welcome.
> It happens that mysql (tried both 4.0 and 5.1, in 2 separate jails),  
> at some time stop responding to connections, and mysql gets stuck in  
> sbwait state. It is only killable with kill -9 <pid>
> each of the two mysqlds is running in a jail on one private IP,  
> serving connections to a webserver nearby - the latter having one  
> public and one private IP, communicating with the other jail via the  
> private network.
> I also experienced two complete system hangs (which must not be  
> necessarily related to the mysql problem) both during a shutdown -r  
> now. one was a panic, in another case the machine was still pingable  
> but did not shut down completely. I could only reset it over the  
> DRAC. here's a screenshot I made over the Dell RAC:
> Since I'm also using zfs there and the kernel has been built with  
> the DTRACE options.
> any advice (also about which more details that I should/could  
> provide) would be very welcome...
> thanx && regards,
> Lorenzo
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