If I make a cow copy of a file, is there a way find out whether either copy has changed? Specifically, I''m looking for a way to figure out which files have changed since a snapshot was taken, short of traditional and time-consuming file comparisons. It could have some interesting possibilities for monitoring and backup, to be able to quickly compare against a reference snapshot to find changes. -- To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
On Monday 20 October 2008 20:25:52 calin wrote:> If I make a cow copy of a file, is there a way find out whether either copy > has changed? Specifically, I''m looking for a way to figure out which files > have changed since a snapshot was taken, short of traditional and > time-consuming file comparisons. It could have some interesting > possibilities for monitoring and backup, to be able to quickly compare > against a reference snapshot to find changes. -- > To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in > the body of a message to majordomo@vger.kernel.org > More majordomo info at http://vger.kernel.org/majordomo-info.htmlI''m also very interested in this, for incremental backups. I use rdiff-backup currently, and being able to do this would likely give an impressive speed boost. -- Josh -- Joshua J. Berry "I haven''t lost my mind -- it''s backed up on tape somewhere." -- /usr/games/fortune -- To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
2008/10/21 calin <calin@splitreflection.com>:> If I make a cow copy of a file, is there a way find out whether either copy has changed? Specifically, I''m looking for a way to figure out which files have changed since a snapshot was taken, short of traditional and time-consuming file comparisons. It could have some interesting possibilities for monitoring and backup, to be able to quickly compare against a reference snapshot to find changes.Btrfs disk format already supports this. We will implement this in the near future. Regards Yan Zheng -- To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html