Originally posted by Don B. Cilly
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I've come to the same conclusion about wine, but I suspect it's a mix between wine and the newer kernels, in addition to not being able to download KB files from MS servers that are no longer operation, which was a statement in the log file.
During the Neon install procedure I used mc to move massive amounts of data from my @Data subvolume to my home accounts. I saw that because on my first attempt to install neon, after all my data was moved over, I was doing minor clean up chores and installing files and programs not in my Data subvolume. During the last file install I got a failure to install msg claiming I was out of SSD space.
Sure enough, using "btrfs filesystem usage /" showed that the used space almost equaled the allocated space, leaving not enough to install the app. Strangely, I saw no slowdown in system of Dolphin browsing speed before, or after that event took place. I dorked but the only advice I found was to remove a few snapshots to free up room. I hadn't made any snapshots, so I couldn't remove any. I decided to reinstall, since it doesn't take that much time, and to not install so much so fast. That seemed to work. Presently this is how it looks:
~$ sudo btrfs filesystem usage /
[sudo] password for jerry:
Overall:
Device size: 465.75GiB
Device allocated: 112.04GiB
Device unallocated: 353.71GiB
Device missing: 0.00B
Used: 111.21GiB
Free (estimated): 354.28GiB (min: 354.28GiB)
Data ratio: 1.00
Metadata ratio: 1.00
Global reserve: 176.55MiB (used: 0.00B)
Data,single: Size:111.01GiB, Used:110.44GiB (99.49%)
/dev/sda1 111.01GiB
Metadata,single: Size:1.00GiB, Used:786.44MiB (76.80%)
/dev/sda1 1.00GiB
System,single: Size:32.00MiB, Used:16.00KiB (0.05%)
/dev/sda1 32.00MiB
Unallocated:
/dev/sda1 353.71GiB
[sudo] password for jerry:
Overall:
Device size: 465.75GiB
Device allocated: 112.04GiB
Device unallocated: 353.71GiB
Device missing: 0.00B
Used: 111.21GiB
Free (estimated): 354.28GiB (min: 354.28GiB)
Data ratio: 1.00
Metadata ratio: 1.00
Global reserve: 176.55MiB (used: 0.00B)
Data,single: Size:111.01GiB, Used:110.44GiB (99.49%)
/dev/sda1 111.01GiB
Metadata,single: Size:1.00GiB, Used:786.44MiB (76.80%)
/dev/sda1 1.00GiB
System,single: Size:32.00MiB, Used:16.00KiB (0.05%)
/dev/sda1 32.00MiB
Unallocated:
/dev/sda1 353.71GiB
Using the balance and fstrim commands I got the used data space down to 84% but as you can see it's climbed back up. Kubuntu 20.04 never behaved that way. But, as long as the unallocated space keeps keeps climbing toward the device size I'm not worrying about it.
EDIT:
I do my incremental backups to a second SSD, which contains only snapshots. My script keeps the number of snapshots to 5, adding a new one and deleting the oldest one. In the last three years I have never run a usage, balance or fstrim on that SSD. My first usage run showed 80% of allocated was used. I did the usual incremental balance command for -d and -m and then run fstrim on it. A usage command after the balance and fstrim showed that 99.93% of the allocated space was used, which is losing a LOT of space.
In fact, I believe that btrfs is broken under Neon.
root@jerry-aspirev3771:~# btrfs balance start -dusage=50 /backup
Done, had to relocate 0 out of 107 chunks
root@jerry-aspirev3771:~# btrfs balance start -dusage=60 /backup
Done, had to relocate 0 out of 107 chunks
root@jerry-aspirev3771:~# btrfs balance start -dusage=70 /backup
Done, had to relocate 0 out of 107 chunks
root@jerry-aspirev3771:~# btrfs balance start -dusage=75 /backup
Done, had to relocate 0 out of 107 chunks
root@jerry-aspirev3771:~# btrfs balance start -dusage=80 /backup
ERROR: error during balancing '/backup': No such file or directory
There may be more info in syslog - try dmesg | tail
root@jerry-aspirev3771:~# dmesg | tail
[21418.654676] BTRFS info (device sdc1): balance: start -dusage=60
[21418.654796] BTRFS info (device sdc1): balance: ended with status: 0
[21428.154196] BTRFS info (device sdc1): balance: start -dusage=70
[21428.154310] BTRFS info (device sdc1): balance: ended with status: 0
[21440.840946] BTRFS info (device sdc1): balance: start -dusage=75
[21440.841059] BTRFS info (device sdc1): balance: ended with status: 0
[21452.616948] BTRFS info (device sdc1): balance: start -dusage=80
[21452.617110] BTRFS info (device sdc1): relocating block group 149272133632 flags data
[21459.292824] BTRFS info (device sdc1): found 1801 extents, stage: move data extents
[21459.483804] BTRFS info (device sdc1): balance: ended with status: -2
Done, had to relocate 0 out of 107 chunks
root@jerry-aspirev3771:~# btrfs balance start -dusage=60 /backup
Done, had to relocate 0 out of 107 chunks
root@jerry-aspirev3771:~# btrfs balance start -dusage=70 /backup
Done, had to relocate 0 out of 107 chunks
root@jerry-aspirev3771:~# btrfs balance start -dusage=75 /backup
Done, had to relocate 0 out of 107 chunks
root@jerry-aspirev3771:~# btrfs balance start -dusage=80 /backup
ERROR: error during balancing '/backup': No such file or directory
There may be more info in syslog - try dmesg | tail
root@jerry-aspirev3771:~# dmesg | tail
[21418.654676] BTRFS info (device sdc1): balance: start -dusage=60
[21418.654796] BTRFS info (device sdc1): balance: ended with status: 0
[21428.154196] BTRFS info (device sdc1): balance: start -dusage=70
[21428.154310] BTRFS info (device sdc1): balance: ended with status: 0
[21440.840946] BTRFS info (device sdc1): balance: start -dusage=75
[21440.841059] BTRFS info (device sdc1): balance: ended with status: 0
[21452.616948] BTRFS info (device sdc1): balance: start -dusage=80
[21452.617110] BTRFS info (device sdc1): relocating block group 149272133632 flags data
[21459.292824] BTRFS info (device sdc1): found 1801 extents, stage: move data extents
[21459.483804] BTRFS info (device sdc1): balance: ended with status: -2
So BTRFS lost track of /backup.
The drive /backup is on generally ran around 80% usage. Running balance or fstrim on it caused the allocated space to drop considerably.
This is the first time since I begin using BTRFS about 5 years ago that I'm having problems with it.
I'm going to continue to run it and see how things go, but I already know that a reinstall is coming soon.
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