So the object I was really after then was the objectID rather than the blockID. cool. On Tue, Jun 21, 2011 at 2:45 PM, Peter Pilley wrote: > > > > On Tue, Jun 21, 2011 at 2:35 PM, Charles Manning wrote: > >> On Tuesday 21 June 2011 13:46:41 Peter Pilley wrote: >> > Hello All on list >> > >> > I am doing some tests with yaffs at the moment and have a question >> > regarding the sequence number. >> > >> > in the docs howyaffsworks it states >> > >> > Sequence Number: As each block is allocated, the file system's sequence >> > number is incremented and each chunk >> > in the block is marked with that sequence number. The sequence number >> thus >> > provides a way of organising the log >> > in chronological order >> > >> > However when I am identifying items in the an image they are all >> returning >> > with the same sequence number >> > >> > Directory: ./, Size: -1, ParentID 1,ChunkID 0, ObjectID 1, SequenceID >> 4096. >> > Directory: .//test3, Size: -1, ParentID 1,ChunkID 0, ObjectID 257, >> > SequenceID 4096. >> > Filename: test2.txt, Size: 10, ParentID 257,ChunkID 1, ObjectID 258, >> > SequenceID 4096. >> > Filename: test, Size: 9, ParentID 1,ChunkID 1, ObjectID 259, SequenceID >> > 4096. >> > Filename: test4.txt, Size: 11, ParentID 1,ChunkID 1, ObjectID 260, >> > SequenceID 4096. >> > Directory: .//test5, Size: -1, ParentID 1,ChunkID 0, ObjectID 261, >> > SequenceID 4096. >> > Filename: test7.txt, Size: 11, ParentID 261,ChunkID 1, ObjectID 262, >> > SequenceID 4096. >> >> Where did the image come from? >> The sequence Id increments on a block basis. >> How many blocks are there in the image you are working with? >> >> > >> > I have based my code on wunyaffs which uses unyaffs from googlecode. >> > >> > I would have thought each chunk received a unique sequence number but it >> > looks like it is block?. >> >> No, as you quote above, the sequence number increments on a block basis. >> >> The chunks in a block are written sequentially, therefore we can always >> figure >> out the order of a chunk by using the combination of sequence Id and chunk >> offset in block. >> >> -- Charles >> >> >> >> >> >> >> >> _______________________________________________ >> yaffs mailing list >> yaffs@lists.aleph1.co.uk >> http://lists.aleph1.co.uk/cgi-bin/mailman/listinfo/yaffs >> > >