So I've been running a raid 5 using an openwrt box with 3 loop files and lvm. All was well for over a year. Now /dev/loop3 keeps dropping from the raid The first time it dropped was due to the network drive actually locking up, it tried to start with only 1 drive and failed. I had to --force the loop files to start, which 2 of them actually did. I could no longer --re-add the drive. Using --add did add the drive to the raid but the sync started at 0% so have to wait for it to rebuild. 11mb/sec takes a while on a 1.5 terabyte array. after 82% sync the router locked up I think to a oom condition, 128mb only. /dev/loop3 was dropped from the array again. I was able to --re-add. 0% SYNC AGAIN. ~30 hours wasted. This has never happened. What has changed? I upgraded from a 3.10 kernel to 3.14 and from mdadm 3.2.6 to 3.3.2 Aren't bitmap's supposed to fix this? Are they useless now? -- To unsubscribe from this list: send the line "unsubscribe linux-raid" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html