Comment # 2 on bug 872268 from Libor Pechacek

The interaction with pause operation is indeed unresolved.  Rating as a
cosmetic issue.

In one terminal:
fmn:~ # while :; do sleep 1; btrfs balance status /mnt/; done
No balance found on '/mnt/'
No balance found on '/mnt/'
No balance found on '/mnt/'
No balance found on '/mnt/'
No balance found on '/mnt/'
No balance found on '/mnt/'
No balance found on '/mnt/'
No balance found on '/mnt/'
No balance found on '/mnt/'
No balance found on '/mnt/'
No balance found on '/mnt/'
No balance found on '/mnt/'
No balance found on '/mnt/'

# BALANCE STARTED - see below
Balance on '/mnt/' is running
1 out of about 10 chunks balanced (2 considered),  90% left
Balance on '/mnt/' is running
2 out of about 10 chunks balanced (3 considered),  80% left
Balance on '/mnt/' is running
3 out of about 10 chunks balanced (6 considered),  70% left
Balance on '/mnt/' is running
3 out of about 10 chunks balanced (6 considered),  70% left
Balance on '/mnt/' is running
4 out of about 10 chunks balanced (7 considered),  60% left
Balance on '/mnt/' is running
4 out of about 10 chunks balanced (7 considered),  60% left
Balance on '/mnt/' is running
4 out of about 10 chunks balanced (7 considered),  60% left
Balance on '/mnt/' is running
4 out of about 10 chunks balanced (7 considered),  60% left
Balance on '/mnt/' is running
4 out of about 10 chunks balanced (7 considered),  60% left
Balance on '/mnt/' is running
4 out of about 10 chunks balanced (7 considered),  60% left
Balance on '/mnt/' is running
4 out of about 10 chunks balanced (7 considered),  60% left
Balance on '/mnt/' is running
5 out of about 10 chunks balanced (8 considered),  50% left
Balance on '/mnt/' is running
5 out of about 10 chunks balanced (8 considered),  50% left

# PAUSE REQUESTED
Balance on '/mnt/' is running, pause requested
5 out of about 10 chunks balanced (8 considered),  50% left
Balance on '/mnt/' is running, pause requested
5 out of about 10 chunks balanced (8 considered),  50% left
Balance on '/mnt/' is running, pause requested
5 out of about 10 chunks balanced (8 considered),  50% left
Balance on '/mnt/' is running, pause requested
5 out of about 10 chunks balanced (8 considered),  50% left
Balance on '/mnt/' is paused
6 out of about 10 chunks balanced (8 considered),  40% left
Balance on '/mnt/' is paused
6 out of about 10 chunks balanced (8 considered),  40% left
Balance on '/mnt/' is paused
6 out of about 10 chunks balanced (8 considered),  40% left
Balance on '/mnt/' is paused
6 out of about 10 chunks balanced (8 considered),  40% left
Balance on '/mnt/' is paused
6 out of about 10 chunks balanced (8 considered),  40% left

# FS UNMOUNTED
No balance found on '/mnt/'
No balance found on '/mnt/'
No balance found on '/mnt/'
No balance found on '/mnt/'
No balance found on '/mnt/'
No balance found on '/mnt/'
No balance found on '/mnt/'
No balance found on '/mnt/'
No balance found on '/mnt/'

# FS REMOUNTED
Balance on '/mnt/' is running
0 out of about 4 chunks balanced (1 considered), 100% left
Balance on '/mnt/' is running
1 out of about 4 chunks balanced (3 considered),  75% left
No balance found on '/mnt/'
No balance found on '/mnt/'
No balance found on '/mnt/'
No balance found on '/mnt/'
No balance found on '/mnt/'
No balance found on '/mnt/'
No balance found on '/mnt/'
No balance found on '/mnt/'
No balance found on '/mnt/'
No balance found on '/mnt/'

While doing the following on other terminal:
fmn:~ # dd if=/dev/zero of=/tmp/btrfs bs=1G count=12
12+0 records in
12+0 records out
12884901888 bytes (13 GB, 12 GiB) copied, 22.9586 s, 561 MB/s
fmn:~ # mkfs.btrfs /tmp/btrfs
btrfs-progs v4.8.2+20161031
See http://btrfs.wiki.kernel.org for more information.

Label:              (null)
UUID:               
Node size:          16384
Sector size:        4096
Filesystem size:    12.00GiB
Block group profiles:
  Data:             single            8.00MiB
  Metadata:         DUP               1.00GiB
  System:           DUP               8.00MiB
SSD detected:       no
Incompat features:  extref, skinny-metadata
Number of devices:  1
Devices:
   ID        SIZE  PATH
    1    12.00GiB  /tmp/btrfs

fmn:~ # losetup /dev/loop0 /tmp/btrfs 
fmn:~ # mount /dev/loop0 /mnt/
fmn:~ # cp -ar /usr/ /mnt/
fmn:~ # cp -ar /home/lpechacek/quickbox/ /mnt/
fmn:~ # btrfs balance start --full-balance /mnt/ &
[1] 18052
fmn:~ # btrfs balance pause /mnt/ &
[2] 18081
fmn:~ # balance paused by user
fmn:~ # umount /mnt 
[1]-  Done                    btrfs balance start --full-balance /mnt/
[2]+  Done                    btrfs balance pause /mnt/
fmn:~ # mount /dev/loop0 /mnt/ 
fmn:~ # head /etc/products.d/baseproduct 
<?xml version="1.0" encoding="UTF-8"?>
<product schemeversion="0">
  <vendor>openSUSE</vendor>
  <name>openSUSE</name>
  <version>20161226</version>
  <release>0</release>
  <arch>x86_64</arch>
  <cpeid>cpe:/o:opensuse:opensuse:20161226</cpeid>
  <productline>openSUSE</productline>
  <register>