Re: BTRFS cache problem

On Sun, Nov 11, 2012 at 04:28:54PM +0100, Swâmi Petaramesh wrote:

Le 11/11/2012 16:20, Hugo Mills a écrit :

quoted

You only need to mount with space_cache once, and after that it's
"sticky". What's probably happening is that you're mounting with
space_cache, which rebuilds the cache. Then, if you reboot before it's
finished rebuilding the cache, the cache isn't complete, and (I think)
it causes the above message -- which is harmless. The same applies to
the inode cache options. Try mounting with clear_cache *once*, then
remounting with space_cache,inode_cache *once*, and waiting for it to
finish rebuilding the cache. Finally, remove all mention of the caches
from your fstab and kernel command line before you next mount the FS.
Hugo. 

Thanks very much Hugo, I'll give this a try. Should I assume that the
cache clearing / building is complete as soon as the disk is idle ?

   I'm not sure. Probably. There is probably (I haven't checked
recently) a kernel process which does the rebuilding.

   Hugo.

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