Hi,
The free space btree can be traversed offline via the xfs_db utility. Something like the following could give you the free extent information for each AG in the fs. for i in $(seq 0 <maxag>); do echo agno $i xfs_db -c "agf $i" -c "addr bnoroot" -c "btdump" <dev> done
My xfs_db didn't have 'btdump' but I discovered 'freesp -d' which summarised the free regions for all AGs at once. I also needed to use 'xfs_db -r ...' to attach it to the filesystem as it was still mounted read-write. (I wasn't sure if remounting it or unmounting it and mounting it again would destroy the logs.)
Thanks again for your help. Regards, @ndy -- andyjpb@xxxxxxxxxxxxxx http://www.ashurst.eu.org/ 0x7EBA75FF -- To unsubscribe from this list: send the line "unsubscribe linux-xfs" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
