On 07/31/2012 03:55 AM, Kyle Gates wrote: > I have a 3 disk raid1 filesystem mounted with nodatacow. I have a > folder in said filesystem with the 'C' NOCOW & 'Z' Not_Compressed > flags set for good measure. I then copy in a large file and proceed to > make random modifications. Filefrag shows no additional extents > created, good so far. A big thank you to the those devs who got that > working. > However, after a balance run (which crashed btw), modifications to the > file result in increasing extent counts, ie. no longer obeying > nodatacow mount option nor the 'C' flag. > I realize that a balance will cow the data but it should not disable > the ability to make nodatacow inline changes to a file. > > I'm currently running 3.5.0 mainline Ubuntu kernel with the latest > master of btrfs-progs from a ppa. >
hmm, I want to know if your 3.5.0 mainline ubuntu kernel has the commit: Btrfs: make btrfs's allocation smoothly with preallocation This commit may help you out of trouble. Please let us know the result. thanks, liubo > Thank you. > Kyle Gates > -- > To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in > the body of a message to majord...@vger.kernel.org > More majordomo info at http://vger.kernel.org/majordomo-info.html > -- To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
