Package: btrfs-tools Version: 0.19+20100601-3, 0.19+20101101-1 Severity: serious
Balance tree action of btrfs command should be limited to only root user, because it may cause data corrupt and usually result in an uninterruptible process which is causing a heavy I/O load (the process may keep runing for a long time because the action is not a easy deal). Run the following command as a non-root user will also start the balance tree action ( / is btrfs here, with ext4 /boot): $ btrfs filesystem balance / I think this problem will cause serious issues if somebody uses it in a production system (though it is really not recommended), so I give it an RC severity. If you think it should be changed, feel free to do it. What's more, I'm not sure whether this should be a bug in the Linux kernel, because such action is actually performed by using system calls. If I try to make a snapshot in a directory by a user who does not have the access, it will generate an error like this: $ pwd /home $ whoami aron $ btrfs subvolume snapshot . backhome Create a snapshot of '.' in './backhome' ERROR: cannot snapshot '.' -- Regards, Aron Xu
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