Most of the time when BTRFS maintenance starts with process btrfs-transacti, my VMWare guest cannot access disk and restarts. Is there anything I can do? I tried to give to guest machine high io priority with ionice, but that does not help.
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OK, no one answers, so my answer can come handy. The CPU usage of btrfs-transactio (and the cleaner process) can be limited with tool cpulimit. It sits in background and if btrfs-transacti takes too much cpu, it will throttle it. That should theoretically give more space to I/O processes of vmware guests.
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