Le 30/04/2020 à 07:31, Phil Karn a écrit :
> I started the operation 5 days ago, and of right now I still have 2.18
> TB to move off the drive I'm trying to replace. I think it started
> around 3.5 TB.
Hi Phil,
I did something similar one month ago. It took less than 4 hours for
1.71 TiB of data:
[xxx@taina ~]$ sudo btrfs replace status /home/SysNux
Started on 21.Mar 11:13:20, finished on 21.Mar 15:06:33, 0 write errs, 0
uncorr. read errs
[xxxg@taina ~]$ sudo btrfs fi show /home/SysNux/
Label: none uuid: c5b8386b-b81d-4473-9340-7b8a74fc3a3c
Total devices 2 FS bytes used 1.70TiB
devid 1 size 1.82TiB used 1.71TiB path /dev/bcache2
devid 2 size 1.82TiB used 1.71TiB path /dev/bcache0
These disks are behind bcache, which may have a positive impact. Also my
system is Fedora 31, and it was with 5.5 kernel, much more recent than
yours.
> Should I reboot degraded without this drive and do a "remove missing"
> operation instead? I'm willing to take the risk of losing another drive
> during the operation if it'll speed this up. It wouldn't be so bad if it
> weren't slowing my filesystem to a crawl for normal stuff, like reading
> mail.
No idea, I'm just a (happy) Btrfs user.
Hope this helps,
--
Jean-Denis Girard
SysNux Systèmes Linux en Polynésie française
https://www.sysnux.pf/ Tél: +689 40.50.10.40 / GSM: +689 87.797.527
