On Sun, Apr 26 2015 at 10:16am -0400,
Christoph Hellwig <hch@xxxxxxxxxxxxx> wrote:
> On Sat, Apr 25, 2015 at 08:37:32AM -0700, Christoph Hellwig wrote:
> > I'll give it a spin.
> >
> > > What were you actually testing when this happened? Were you failing
> > > paths under IO load or something?
> >
> > This happened on the initial udev-direct scan of the devices.
> >
> > > Also, which upstream commit was your tree based on? Did you have any
> > > non-upstream patches applied that I should be aware of?
> >
> > Latest Linus tree as of this morning.
>
> Seems like the first warning goes away without CONFIG_DEBUG_OBJECTS.
> Note that in either way I/O over dm-mpath actually works fine.
>
> Btw, this is the script used to reproduce it, you need
> CONFIG_TARGET_CORE, CONFIG_TCM_IBLOCK and CONFIG_LOOPBACK_TARGET
> enabled. It jsut creates two different targets with a lun each,
> pointing to the same device. The target code automatically supports
> ALUA in this case.
>
> ---
> #!/bin/bash
>
> # add your own device
> #DEV=/dev/sda
>
> mount -t configfs none /sys/kernel/config/
>
> tcm_node --block iblock_0/array /dev/sda
>
> line=$(tcm_loop --createnexus=0)
> wwn=$(echo $line | awk '{print $15}')
> tcm_loop --addlun=$wwn 0 0 iblock_0/array
>
> line=$(tcm_loop --createnexus=1)
> wwn=$(echo $line | awk '{print $15}')
> tcm_loop --addlun=$wwn 1 0 iblock_0/array
>
So you're still using lio-utils? Seems "lio-utils are deprecated and
have been superseded by targetcli".. what am I missing?
What lio-utils repo should I be using to get the utils that'll work with
your script?
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