Ryusuke Konishi <[email protected]> writes: > An experimental resize feature did exist, but it's not applicable to > the current version. And, it didn't support shrinking. > So the feature you want is not available now. (Sorry for inconvenience)
Ryusuke, Thanks for developing nilfs2, it is a superb piece of work. I am interested in the resize feature and willing to implement it, but I need a little help. My understanding of the nilfs2 source code in 2.6.35.4 is that in order to grow a file system it should be sufficient to change s_nsegments in both superblocks while the file system is unmounted. If I understand correctly, the sufile grows automatically to accomodate the additional segments because nilfs_sufile_alloc() calls nilfs_sufile_get_segment_usage_block() with create=1, which grows the sufile as necessary. Is this interpretation correct? If so, it should not be too hard to code a little utility that grows an unmounted file system. (Later we'll worry about shrinking and online resize.) You allude to an experimental resize feature. Do you have code that I can adapt to the current version? Thanks, Matteo Frigo -- To unsubscribe from this list: send the line "unsubscribe linux-nilfs" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
