Re: [PATCH] New nodatacow checker

2008-07-29 Thread Chris Mason
On Wed, 2008-07-30 at 01:40 +0800, Yan Zheng wrote: > Hello, > > This is updated version of nodatacow patch. To check whether a given > file extent is referenced by multiple snapshots, the checker walks > down the fs tree through dead root and checks all tree blocks in the > path. We can easily de

[PATCH] New nodatacow checker

2008-07-29 Thread Yan Zheng
Hello, This is updated version of nodatacow patch. To check whether a given file extent is referenced by multiple snapshots, the checker walks down the fs tree through dead root and checks all tree blocks in the path. We can easily detect whether a given tree block is directly referenced by other