I have a partition set up as software RAID-1 on a CentOS 5.3 machine. Today, the system was rebooted, when it came back up I noticed that it had started to resync. It completes the sync, then immediately starts again. From the log: Jul 29 09:46:02 cbserver kernel: md: syncing RAID array md2 Jul 29 09:46:02 cbserver kernel: md: minimum _guaranteed_ reconstruction speed: 5000 KB/sec/disc. Jul 29 09:46:02 cbserver kernel: md: using maximum available idle IO bandwidth (but not more than 200000 KB/sec) for reconstruction. Jul 29 09:46:02 cbserver kernel: md: using 128k window, over a total of 239946752 blocks. Jul 29 11:02:01 cbserver kernel: md: md2: sync done. Jul 29 11:02:01 cbserver kernel: md: syncing RAID array md2 Jul 29 11:02:01 cbserver kernel: md: minimum _guaranteed_ reconstruction speed: 5000 KB/sec/disc. Jul 29 11:02:01 cbserver kernel: md: using maximum available idle IO bandwidth (but not more than 200000 KB/sec) for reconstruction. Jul 29 11:02:01 cbserver kernel: md: using 128k window, over a total of 239946752 blocks. Jul 29 11:56:36 cbserver kernel: md: md2: sync done. Jul 29 11:56:37 cbserver kernel: md: syncing RAID array md2 Jul 29 11:56:37 cbserver kernel: md: minimum _guaranteed_ reconstruction speed: 5000 KB/sec/disc. Jul 29 11:56:37 cbserver kernel: md: using maximum available idle IO bandwidth (but not more than 200000 KB/sec) for reconstruction. Jul 29 11:56:37 cbserver kernel: md: using 128k window, over a total of 239946752 blocks. Any idea what is causing this? And how to make it stop? Thanks!