On Thu, Jun 22, 2017 at 03:07:14PM +0530, Shyam Prasad N wrote: > I'm planning to use the btrfs-convert tool to convert production data > in ext4 filesystem into btrfs. > What is the stability status of this feature?
It has been recently (btrfs-progs 4.6) rewritten nearly from scratch. This was a year ago and from the lack of complaints recently it sounds like any major bugs should be ironed out -- assuming you're using a version of -progs new enough. On the other hand, if you'd want use -progs older than that, I'd recommend also using raid5 and qgroups _and_ cat </dev/urandom >/dev/the_filesystem, so you have no misguided hopes about the safety of your data. :) > Can I know the reason why? Is it because most existing ext4 > filesystems are already converted? Most of us recreate the filesystem from scratch, that's the safer way. Also, defrag + full-balance are slower than just copying everything in, thus the only things to gain are short downtime (both defrag and balance work online) and no need for temp storage. > Is this tool supported, at least? Can I use this tool as a part of > software upgrade to change the data filesystem to btrfs? You do have backups, right? Meow! -- ⢀⣴⠾⠻⢶⣦⠀ ⣾⠁⢠⠒⠀⣿⡁ A dumb species has no way to open a tuna can. ⢿⡄⠘⠷⠚⠋⠀ A smart species invents a can opener. ⠈⠳⣄⠀⠀⠀⠀ A master species delegates. -- To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
