Maarten v d Berg <maarten@vbvb.nl> writes: > Hi Mike. I read about LVM some time ago and decided to use that as > it seemed to solve my problem of the ever-growing data volume I need > to store. > > However, after the initial setup I quickly dropped the LVM idea > again since it only _seemed_ to solve my problem. As I understand > it, LVM allows the addition of extra volumes but it does nothing at > the level of the filesystem which resides on top. So in order to > effectively grow my filesystem, which is the ultimate goal of > course, I'd need to delete the current FS and make a new -bigger- > one. And last time I checked this definitely kills your data. > > Otherwise, adding a 40 GB physical volume to a 120 GB raid5 / LVM > set just gives me one 120 GB partition and [room for] another 40 GB > partition. There is NO gain whatsoever using LVM here compared to > when I would just have added a single 40GB disk all by itself > without using LVM in the first place, is there ? > > This has always left me wondering. Did I miss something (except > using some alpha FS-resize code...) ? Yes, ext2, ext3, xfs, jfs and reiserfs can all be extended without destroying the data. Some of them can be reduced, too. -- Måns Rullgård mru@kth.se - To unsubscribe from this list: send the line "unsubscribe linux-raid" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
