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xen-devel
Re: [Xen-devel] [PATCH] xend: drbd improvements
Ian Jackson wrote:
> Jim Fehlig writes ("[Xen-devel] [PATCH] xend: drbd improvements"):
>
>> xend: drbd improvements
>>
>> 1) drbdadm state is debrecated, and the script tries to detect the
>> primary/secondary information from the deprecated message
>> 2) os.popen2 does not work with the array as argument
>> 3) popen2 is deprecated since python2.6
>>
>
> Forgive my ignorance, but: why does xend need to mess with drbd at
> all ? Why can't it just open the block device ?
>
Good question. I too was surprised to see special casing of drbd within
xend. Seems c/s 20158 added this code to allow bootloaders (pygrub,
domUloader, et. al.) to work with drbd devices using the 'drbd:resource'
syntax. Perhaps the author of that patch (cc'd) can provide more
details. This patch simply makes improvements to the existing code.
BTW, c/s 20158 also uses popen2() in tools/python/xen/util/blkif.py, so
IMO a V2 will be needed if this patch is considered.
> xl and libxl don't have any drbd functionality so if this is necessary
> it's a missing feature.
>
Micheal, does xl/libxl need this functionality?
Regards,
Jim
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