On Wed, Jul 11, 2018 at 09:08:40AM +0800, Su Yue wrote: > > > On 07/11/2018 08:58 AM, Marc MERLIN wrote: > > On Wed, Jul 11, 2018 at 08:53:58AM +0800, Su Yue wrote: > > > > Problems > > > > 1) btrfs check --repair _still_ takes all 32GB of RAM and crashes the > > > > server, despite my deleting lots of snapshots. > > > > Is it because I have too many files then? > > > > > > > Yes. Original check first gather all infomation about extent tree and > > > your files in RAM, then process one by one. > > > But deleting still counts, it does speed lowmem check up. > > > > Understood. > > > > > > 2) I tried Su's master git branch for btrfs-progs to try and see how > > > Oh..No... My master branch is still 4.14. The true mater branch is > > > David's here: > > > https://github.com/kdave/btrfs-progs > > > But the master branch has a known bug which I fixed yesterday, please see > > > the mail. > > > > So, if I git sync it now, it should have your fix, and I can run it, > > correct? > > > Yes, please.
Ok, I am now running gargamel:~# time btrfs check --mode=lowmem --repair /dev/mapper/dshelf2 using git master from https://github.com/kdave/btrfs-progs I will report back how long it takes with extent tree check and whether it returns clean, or not. Marc -- "A mouse is a device used to point at the xterm you want to type in" - A.S.R. Microsoft is to operating systems .... .... what McDonalds is to gourmet cooking Home page: http://marc.merlins.org/ | PGP 7F55D5F27AAF9D08 -- 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
