Note: "permalinks" may not be as permanent as we would like,
direct links of old sources may well be a few messages off.
On Thu, 14 Feb 2008, Leroy van Logchem wrote: >> Here, it tells LVM2 can be used for creating snapshots. > > Caution: LVM2 snapshots become very slow if the amount of changes increases > due copy-on-write. Add the additional seeks and you have a much lower write > speed left. > The last time I tried it reduced the write speed to 15% of the normal > throughput. Indeed, and the more snapshots you have, the worse it gets, because the overwritten data has to be copied to each of the snapshots, since they are just sparse undo logs. Gordan