feat(v2): background compaction cleanup #1015

Job	Run time
on Bare-metal amd64	3m 2s
on QEMU (amd64, amd64/boot/vmlinuz-5.10.0-28-amd64, amd64/boot/initrd.img-5.10.0-28-amd64)	15m 51s
on QEMU (amd64, amd64/boot/vmlinuz-5.15.0-94-generic, amd64/boot/initrd.img-5.15.0-94-generic)	17m 35s
on QEMU (amd64, amd64/boot/vmlinuz-5.4.0-150-generic, amd64/boot/initrd.img-5.4.0-150-generic)	16m 29s
on QEMU (amd64, amd64/boot/vmlinuz-6.1.0-18-amd64, amd64/boot/initrd.img-6.1.0-18-amd64)	18m 18s
on QEMU (amd64, amd64/boot_extra/vmlinuz-5.10.205-195.807.amzn2.x86_64, amd64/boot_extra/initramf...	16m 41s
on QEMU (arm64, arm64/boot/vmlinuz-5.10.0-28-arm64, arm64/boot/initrd.img-5.10.0-28-arm64)	22m 56s
on QEMU (arm64, arm64/boot/vmlinuz-5.15.0-94-generic, arm64/boot/initrd.img-5.15.0-94-generic)	38m 20s
on QEMU (arm64, arm64/boot/vmlinuz-5.4.0-150-generic, arm64/boot/initrd.img-5.4.0-150-generic)	54m 35s
on QEMU (arm64, arm64/boot/vmlinuz-6.1.0-18-arm64, arm64/boot/initrd.img-6.1.0-18-arm64)	24m 25s
on QEMU (arm64, arm64/boot_extra/vmlinuz-5.10.205-195.807.amzn2.aarch64, arm64/boot_extra/initram...	39m 59s
	4h 28m 11s

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