RE: [Xen-devel] Supporting large dump files

["Ian Pratt" <m+Ian.Pratt@xxxxxxxxxxxx>]

> This may have come up before but I can't find it - with the 
> default build of Xen, libxc is built in a way that does not 
> support large files
> - this is a problem currently when attempting to dump domains 
> larger than 2GB - the dump eventually fails with:

PV save/restore seems to work fine for guests >4GB... 

Ian
 
> [root@teller diag]# xm dump-core penn1
> Dumping core of domain: penn1 ...
> Error: Failed to dump core: (27, 'File too large')
> 
> My (admittedly limited) knowledge of this area leads me to 
> the need to define _FILE_OFFSET_BITS as 64; is there any 
> issue with turning this on for the tools/libxc build? Is 
> there any other #define that should be used instead of or in 
> addition to this one?
> 
> Simon
> 
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