[Libguestfs] [PATCH RFC] blkid: start using libblkid directly instead

[Richard W.M. Jones]

Karel, on a related topic, does libblkid always ignore the cache
(/run/blkid/blkid.tab etc)?

We go to some length to disable the cache in libguestfs, eg. calling
blkid -c /dev/null and/or blkid -p (this has to work on RHEL 5 which
didn't have the -p option).

Basically we never want the cache, we always want (lib)blkid to probe
the disk directly.

Rich.

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