Re: dm-cache: dirty state of blocks in writethrough mode

[Heinz Mauelshagen <heinzm@xxxxxxxxxx>]

On 07/23/2013 08:44 AM, Vijarnia, Anil wrote:

Hello,

In Documentation/cache.txt, section ‘Updating on-disk metadata’ mentions that “If the system crashes all cache blocks will be assumed dirty when restarted”. 

I am assuming that the above line is relevant for writeback mode only, and in writethrough mode the cache will always be coherent after a crash. 

Can someone confirm/reject this assumption?

That's correct

Reason being that the cache never holds any dirty pages in writethrough mode.

-- lvmguy

Thanks

 

--
dm-devel mailing list
dm-devel@xxxxxxxxxx
https://www.redhat.com/mailman/listinfo/dm-devel

--
dm-devel mailing list
dm-devel@xxxxxxxxxx
https://www.redhat.com/mailman/listinfo/dm-devel