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Joined 1 year ago
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Cake day: August 6th, 2023

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  • Several people here have suggested the gearbox be in 1st gear, while starting. Dunno why.

    I always shift to neutral, while starting, for safety (to avoid having the starter lurch), depress the clutch (as a 2nd layer of defense for the same) and still sometimes it happens that I forget both.

    As for how to actually start moving: press clutch, put in 1st gear, release any brakes assuming you’re on level ground, slowly release clutch until you feel that the clutch starts engaging. Then hold it there for a moment, to allow the car to get a tiny bit of speed, until finally releasing it completely. If you release clutch too fast, it’ll overload the engine and it’ll stall. If too slowly, it wears the clutch, which is expensive to replace. Older gasoline-fueled cars with low torque at low RPM might need a bit of accelerator (say 2000RPM) to get moving without stalling.








    1. Make a snapshot with LVM2 or BTRFS to ensure consistency, delete the snapshot after backing up.
    2. You can back up files as root (I do) or a dedicated user that has perms to all the relevant data via groups.
    3. Rsync can preserve users either numerically or by name.
    4. Rsync can do incremental backups via hardlinks (you’ll have a complete view of all files in each snapshot, but only pay the storage when files actually change).










  • It didn’t, but due to unrelated reasons. The root FS was mounted r/w, so the regular IO eventually overwhelmed the network’s ability to copy stuff.

    But no worries, a reboot later, with unmounted FS, I finished the same thing.

    Copying the disk of a running system appears to be fine in LVM. Copying is done block-by-block, and the only thing it has to do to make it atomic is: in case of a conflict (writing into a block that’s being copied right now), postpone writing to a block until it’s copied, then finish the write in the new location. Or else, abort the copy, finish the write, then copy again.