Comment # 7 on bug 1160947 from Wenruo Qu

(In reply to Daniel Noga from comment #5)
> * install all updates including kernel
> * reboot to run latest Leap 15.1 kernel
> * run "sudo btrfs balance start /" in first terminal
> * run "sudo btrfs balance cancel /" in second terminal terminal
>  -> terminated immediatelly
> 
> * run "sudo btrfs balance start /" in first terminal again
> * try "sudo btrfs balance status /" in second terminal
> * now wait around one minute, till it starts showing "sudo btrfs balance
> status /" start showing "0 out of about 66 chunks balanced (5 considered),
> 100% left"
> * run "sudo btrfs balance cancel /" in second terminal terminal
> * I am waiting already ten minutes and balance still runs
> * try to CTRL + C on first terminal, nothing happens, still runs
> 
> 
> 4.12.14-lp151.28.48-default

Dmesg please.

There is a reported but hard to reproduce situation in upstream, where "Found
XXX extents" loops and failed to cancel.

Need dmesg to make sure that's the case.