I plan to test the persistent preallocation patches on a huge sparse device, to know if >32 bit physical block numbers (upto 48bit) behave as expected. I have following questions for this and will appreciate suggestions here: a) What should be the sparse device size which I should use for testing? Should a size of > 8TB (say, 100 TB) be enough ? The physical device (backing store device) size I can have is upto 70GB. b) How do I test allocation of >32 bit physical block numbers ? I can not fill > 8TB, since the physical storage available with me is just 70GB. c) Do I need to put some hack in the filesystem code for above (to allocate >32 bit physical block numbers) ? Any further ideas on how to test this will help. Thanks! -- Regards, Amit Arora - To unsubscribe from this list: send the line "unsubscribe linux-ext4" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
