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• lsof -p • /dev/mapper/docker-xxx … Έ͍ͨͳΛͨΒ ͱั·͑ͯΔ • mount /dev/mapper/docker-202:1-3019790- on /var/lib/docker/devicemapper/mnt/ type ext4 (rw,relatime,discard,stripe=16,data=ordered) /dev/mapper/docker-202:1-3019790- on /var/lib/docker/devicemapper/mnt/ type ext4 (rw,relatime,discard,stripe=16,data=ordered) /dev/mapper/docker-202:1-3019790- on /var/lib/docker/devicemapper/mnt/ type ext4 (rw,relatime,discard,stripe=16,data=ordered) ……..
• Refactor the devicemapper code to avoid many mount/unmount race conditions and failures! • Remove directory when removing devicemapper device. This cleans up leftover mount directories! • Avoid extra mount/unmount during container registration. This removes an unneeded mount/unmount operation which was causing problems with devicemapper! • Clean up archive closing. This fixes and improves archive handling! • Avoid temporarily unmounting the container when restarting it. This fixes a race for devicemapper during restart
• Avoid extra mount/unmount during build. This fixes mount/unmount related errors during build.! • Make --rm the default for docker build.! • Devicemapper: cleanups and fix for unmount. Fixes two problems which were causing unmount to fail intermittently.! • Devicemapper: remove directory when removing device. Directories don't get left behind when removing the device.! • Add -f flag to docker rm to force removal of running containers.! • Kill ghost containers and restart all ghost containers when the docker daemon restarts.