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stuck and eats 100% cpu #38
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Hard to debug this without more context. It sounds like a hang in the btrfs subsystem, maybe during send or receive. I'd check that you have the latest btrfs-progs, and a recent kernel. It could also be due to corruption in the btrfs file system. |
I'm experiencing such kind of things on snapshot deletion. |
Buttersink relies on btrfs quota feature to estimate diff sizes. If btrfs quota is disabled then it will be enabled by buttersink (but it also seems to be enabled by default on newly created FS). It looks to be a btrfs bug. |
Quoting developers conversation
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Based on existing work AmesCornish#29. Use estimation option twice to disable relying on quotas (`-ee`). Lacking of snapshot size information cause crazy diff paths on current algorithm. Closes: AmesCornish#29 Resolves: AmesCornish#38
Based on existing work AmesCornish#29. Use estimation option twice to disable relying on quotas (`-ee`). Lacking of snapshot size information cause crazy diff paths on current algorithm. Closes: AmesCornish#29 Resolves: AmesCornish#38
sometimes it is stuck in infinite loop and eats 100%cpu.
Can't kill it (KILL -9 do nothing), and a strace shows nothing, so it seems it does not call sys calls at all.
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