Re: [libvirt] [PATCH]Fix minor issues in logical storage backend

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On Thu, Aug 28, 2008 at 06:15:27PM -0600, Jim Fehlig wrote:
> Hi All!
> 
> I came across some problems trying to create a new LVM-based storage
> pool using this config
> 
> <pool type="logical">
>   <name>test_vg</name>
>   <source>
>     <device path="/dev/sdb1"/>
>   </source>
>   <target>
>     <path>/dev/test_vg</path>
>   </target>
> </pool>
> 
> Volume group did not previously exist so I did
> virsh pool-define <above.xml>
> virsh pool-build test_vg
> 
> pool-build failed since the backend logical storage driver does not have
> VIR_STORAGE_BACKEND_POOL_SOURCE_DEVICE set in flags.  Without this flag
> set, the device element is never parsed in virStoragePoolDefParseDoc()
> (storage_conf.c), causing pvcreate to fail since no physical volume is
> specified.

 Hum, looking at the current code now I see

    .poolOptions = {
        .flags = VIR_STORAGE_BACKEND_POOL_SOURCE_NAME,
        .formatFromString = virStorageBackendLogicalPoolFormatFromString,

So there is an initialization of the field. It's unclear to me if
the two should be OR'ed, or should be kept as-is,  if we have the pool
name do we need to provide the pool device then ? I get a bit confused
now.

> After this problem was memory corruption cause by miscalculating the
> size of vgcreate command line :-).

  Whoops !! :-)
That one applied cleanly.
So at least I'm commiting this part.

  thanks !

Daniel
-- 
Daniel Veillard      | libxml Gnome XML XSLT toolkit  http://xmlsoft.org/
daniel@xxxxxxxxxxxx  | Rpmfind RPM search engine http://rpmfind.net/
http://veillard.com/ | virtualization library  http://libvirt.org/

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