I am testing btrfs for long-term storage and backup, and i would like to know more about "autodefrag" option: 1. Will "autodefrag" option benefit ssd? My understanding is: autodrag -> number of extent decrease -> metadata decrease -> a "healthier" filesystem in the long run (P.S. I am aware that autodefrag will introduce extra write I/O) 2. AFAIK, "autodefrag" detects small random writes into files and queues them up for an automatic defrag process, so the filesystem will defragment itself while it''s used. If the system reboot/crash/remount-ro, will the autodefrag process continue after resume? -- To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html