Re: cvs commit: src/sys/vfs/hammer hammer.h hammer_disk.h hammer_io.c hammer_ondisk.c

[Jordan Gordeev <jgordeev@xxxxxx>]

Matthew Dillon wrote:
> dillon      2008/08/29 13:19:08 PDT
>
> DragonFly src repository
>
>   Modified files:
>     sys/vfs/hammer       hammer.h hammer_disk.h hammer_io.c 
>                          hammer_ondisk.c 
>   Log:
>   HAMMER: Mass storage flush command support
>   
>   Add mass storage flush command support to HAMMER.  The HAMMER flush cycle
>   issues async I/O in parallel and waits for it to complete before moving
>   onto the next stage.  This occurs in two places.  The new flush command
>   is issued after the async I/O, and then we wait on everything.
>   
>  
What's the status of UFS with soft updates with respect to disk cache 
flushing? Doesn't do it currently and therefore can't provide its 
guarantees for consistency after a power failure?