Need btrfs every day

Yes, I think so too :-(

So I am not alone with danger from btrfs.

I like my jolla and the new sailfish, but I calmed down if ext4 returns!!

Dear jolla-support: Please make a update to solve this problem!

@austrian: Jolla Tablet has EXT4, at least we have that. However chances that we'll get that on phone are pretty slim.

:

[root@Jolla nemo]# btrfs fi df /
Data, single: total=12.37GiB, used=9.52GiB
System, DUP: total=64.00MiB, used=4.00KiB
System, single: total=4.00MiB, used=0.00
Metadata, DUP: total=512.00MiB, used=206.65MiB

There seems no problem for me, is it?

But

[root@Jolla nemo]# btrfs fi sh 
ERROR: unable get label Inappropriate ioctl for device
Label: 'sailfish'  uuid: 04ae1499-2c1e-4541-a9df-159a1480c3b0
    Total devices 1 FS bytes used 9.72GiB
    devid    1 size 13.75GiB used 13.50GiB path /dev/mmcblk0p28

Btrfs v3.16

shows again a full disk.

btrfs is for my jolla a dangerous virus!

Okay, I had issues with BTRFS once too and specifically reserved more space for metadata. Now I have my device reporting on settings > product information - 8,5 | 13,7 This suggest to me that I still have plenty of space left.

The BTRFS balance checker reports just as the command line does:

Using username "root".
Last login: Fri Oct 23 12:56:39 2015
,---
| SailfishOS 2.0.0.10 (Saimaa) (armv7hl)
'---
-bash-3.2# btrfs fi show
ERROR: unable get label Inappropriate ioctl for device
Label: 'sailfish'  uuid: 0f8a2490-53ed-4ff6-ba34-b81df3430387
        Total devices 1 FS bytes used 7.53GiB
        devid    1 size 13.75GiB used 12.62GiB path /dev/mmcblk0p28

Btrfs v3.16
-bash-3.2# btrfs fi df /
Data, single: total=11.49GiB, used=7.35GiB
System, DUP: total=64.00MiB, used=4.00KiB
System, single: total=4.00MiB, used=0.00
Metadata, DUP: total=512.00MiB, used=183.46MiB
-bash-3.2#

So why the disparity of free space reported to the user on product information with how BRTFS seems to see things?

Do I need to rebalance anything or what's going on?

Also any clue on what "ERROR: unable get label Inappropriate ioctl for device" means?

BR

Also we still have the infamous stale thumbnails issue. In my case they easily make for a half of all files in /home if I don't delete them regularly.

Also note that by default (because it was BTRFS's default back in the era of Jolla 1's design), metadata use "DUP" redundancy (which write 2 copies for each 256MiB allocated chunk of metadata - i.e.: using 512MiB on the flash media for a 256MiB of chunk).

Later, BTRFS started recommanding "single" for metadata on flash media, mostly because flash translation layers tend to group writes together: both copy will end up on the same eraseblock of the flash (unlike spinning HDD which will write each copy in a different part as asked). If the block dies, both copy will get simultaneously fried together, no benefit of writing "DUP" (unlike HDD where a bad sector will only afect 1 of the copies).

See here

Thanks!

But if I forget on Tuesday to connect a power adapter, the cleaning process isn't working :-(

My jolla has 16GB, should I use now only 8GB?

I get a warning from "BTRFS balance checker", it would be nice for solution to start the automatic btrfs cleaning process. This problem is not only one time, it returns every day :-(

i do so. i do try not to use more then 10 gb. music etc is all on sd card. when you clean up look also for hidden stuff. run balancer once a week then you are out of trouble. my experience is that balancer did not help once you have more then 13-14 gb used. i needed to get below 10 gb to get goox allocation value again (68%) from balancer

https://together.jolla.com/question/105264/btrfs-balancer-does-not-have-an-impact-on-allocation/