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#1 2020-05-18 10:31:46

Maki
Member
From: Skopje, Macedonia
Registered: 2007-10-16
Posts: 348
Website

System freeze with btrfs and snapper

I moved my arch system to BTRFS by creating the fs and moving everything over with rsync.
Created only one subvolume home by renaming /home and doing mv /oldhome/* /home after creation, then i installed snapper and set it up to create snapshots of home.
However these two days i have weird system freezing in the evening. Disk IO is at 100%, i can see reads speeds of 500MB/s on my ssd, but no offending process is seen, after a while the system freezes completely for hours on end until i do a force shutdown, after which everything works and i can't find logs in journalctl, oddly enough applications still write to the log.
One thing that could be related, i used elevator=noop and vanilla linux. Turned that off and switched to linux-zen now, i'll see how it goes

Here are the timers that i have on my system, frstrim was running yesterday but the on saturday i also had a freeze

Mon 2020-05-18 12:58:26 CEST 39min left  Mon 2020-05-18 11:58:26 CEST 20min ago snapper-cleanup.timer        snapper-cleanup.service       
Mon 2020-05-18 13:00:00 CEST 40min left  n/a                          n/a       snapper-timeline.timer       snapper-timeline.service      
Tue 2020-05-19 00:00:00 CEST 11h left    Mon 2020-05-18 00:00:01 CEST 12h ago   logrotate.timer              logrotate.service             
Tue 2020-05-19 00:00:00 CEST 11h left    Mon 2020-05-18 00:00:01 CEST 12h ago   man-db.timer                 man-db.service                
Tue 2020-05-19 00:00:00 CEST 11h left    Mon 2020-05-18 00:00:01 CEST 12h ago   shadow.timer                 shadow.service                
Tue 2020-05-19 00:00:00 CEST 11h left    Mon 2020-05-18 00:00:01 CEST 12h ago   updatedb.timer               updatedb.service              
Tue 2020-05-19 06:03:54 CEST 17h left    Mon 2020-05-18 06:03:54 CEST 6h ago    etckeeper.timer              etckeeper.service             
Tue 2020-05-19 06:03:54 CEST 17h left    Mon 2020-05-18 06:03:54 CEST 6h ago    systemd-tmpfiles-clean.timer systemd-tmpfiles-clean.service
Mon 2020-05-25 00:00:00 CEST 6 days left Mon 2020-05-18 00:00:01 CEST 12h ago   fstrim.timer                 fstrim.service

If it ain't broke, broke it then fix it.

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