schnapps issueshttps://gitlab.nic.cz/turris/schnapps/-/issues2023-08-16T14:00:34+02:00https://gitlab.nic.cz/turris/schnapps/-/issues/52schnapps -d /srv with zstd compression leads to periodical load average of 30+2023-08-16T14:00:34+02:00Orest Worhaczschnapps -d /srv with zstd compression leads to periodical load average of 30+Hi,
I am using msata drive formatted with Storage Plugin and I have chosen in Luci to mount it with:
```
/dev/sda2 on /srv type btrfs (rw,noatime,nodiratime,compress=zstd,ssd,space_c
ache,subvolid=743,subvol=/@)
```
While it was working...Hi,
I am using msata drive formatted with Storage Plugin and I have chosen in Luci to mount it with:
```
/dev/sda2 on /srv type btrfs (rw,noatime,nodiratime,compress=zstd,ssd,space_c
ache,subvolid=743,subvol=/@)
```
While it was working it was working but I think that using schnapps on such a system leads to load average range 30+ in some cases and the system becomes totally unresponsive. Cannot even login via ssh.
I was wondering that its acctually doing something so I let it be that much loaded and at some point it went down to load average 5+ and I could login and see htop and netdata and the cpu was at 50% and according to netdata it was used by 'system'. But later on it went back to unresponsive state and dropped ssh connection.
I had this problem before as it lead me to invalid snapshots half-made as the router just hang in the middle of creating a snapshot. So I taken out the drive connected it via adapter to my laptop. Deleted all btrfs subvolumes except @ and recompressed all files with btrfs defrag and connected it back and it was all again around 1-4% cpu usage.
Before I also tested that taking out the drive from Omnia also fixed this extreme load. With the drive unresponsive, without just fine.
So I request to test schnapps with btrfs compressed drives as all problems begin when I try to do some schnapps operation like creating or deleting the snapshot.
Thanks!Michal HruseckyMichal Hrusecky