Paul Raines <raines@xxxxxxxxxxxxxxxxxxx> writes: > On Fri, 13 Feb 2004, Sean Neakums wrote: >> Off the top of my head I was thinking that maybe you could do >> something with lvm snapshots and dump, doing a restore on the remote >> side, but I have no idea how practical and robust that would be. > > I looked into that but LVM/EVMS snapshots store only the difference. What > I need is complete other copy so if the original paritions dies completely, > I still have everything (at least up to the last mirror job). Right, but the idea of dumping the snapshot is that you will be dumping a consistent image of the filesystem, which can then be restores on the other side and used safely. (At least, I think that snapshots give you a consistent view of the FS.) Once the dump is complete, you ditch the snapshot. > But you got me thinking about dump/restore. Does dump/restore do things at > the block level? If I have two equal partitions and I make my initial > image doing a dump on the first and piping it into a restore one the > second. Then at later intervals do an incremental dump on the first piping > it again into a restore on the second, will it just do the most > efficient thing (i.e. handle renames as only a change to the directories > involved)? > > I am not too familiar with dump so don't know if incremental dumps are > possible in such a scheme. I'm very rusty on dump, but if I recall correctly, one of the arguments is the "level", which will dump only the differences since the last dump at level N - 1. Level 0 is special and denotes a full dump. _______________________________________________ Ext3-users@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/ext3-users
