Every time I stop a RAID1 device with raidstop, and start it again with raidstart, it resyncs. Is this normal, or am I doing something wrong? Here is an example with a RAID1 device on two loopback devices: # cat /etc/raidtab raiddev /dev/md0 raid-level 1 nr-raid-disks 2 nr-spare-disks 0 chunk-size 4 device /dev/loop1 raid-disk 0 device /dev/loop2 raid-disk 1 # mkraid /dev/md0 handling MD device /dev/md0 analyzing super-block disk 0: /dev/loop1, 10240kB, raid superblock at 10176kB disk 1: /dev/loop2, 10240kB, raid superblock at 10176kB Sep 21 19:30:16 zaphod kernel: md: bind<loop1> Sep 21 19:30:16 zaphod kernel: md: bind<loop2> Sep 21 19:30:16 zaphod kernel: raid1: raid set md0 active with 2 out of 2 mirrors Sep 21 19:30:16 zaphod kernel: md: syncing RAID array md0 Sep 21 19:30:16 zaphod kernel: md: minimum _guaranteed_ reconstruction speed: 1000 KB/sec/disc. Sep 21 19:30:16 zaphod kernel: md: using maximum available idle IO bandwith (but not more than 200000 KB/sec) for reconstruction. Sep 21 19:30:16 zaphod kernel: md: using 128k window, over a total of 10176 blocks. Sep 21 19:30:17 zaphod kernel: md: md0: sync done. # raidstop /dev/md0 Sep 21 19:30:31 zaphod kernel: md: md0 stopped. Sep 21 19:30:31 zaphod kernel: md: unbind<loop2> Sep 21 19:30:31 zaphod kernel: md: export_rdev(loop2) Sep 21 19:30:31 zaphod kernel: md: unbind<loop1> Sep 21 19:30:31 zaphod kernel: md: export_rdev(loop1) # raidstart /dev/md0 Sep 21 19:30:46 zaphod kernel: md: autorun ... Sep 21 19:30:46 zaphod kernel: md: considering loop2 ... Sep 21 19:30:46 zaphod kernel: md: adding loop2 ... Sep 21 19:30:46 zaphod kernel: md: adding loop1 ... Sep 21 19:30:46 zaphod kernel: md: created md0 Sep 21 19:30:46 zaphod kernel: md: bind<loop1> Sep 21 19:30:46 zaphod kernel: md: bind<loop2> Sep 21 19:30:46 zaphod kernel: md: running: <loop2><loop1> Sep 21 19:30:46 zaphod kernel: raid1: raid set md0 active with 2 out of 2 mirrors Sep 21 19:30:46 zaphod kernel: md: ... autorun DONE. Sep 21 19:30:46 zaphod kernel: md: syncing RAID array md0 Sep 21 19:30:46 zaphod kernel: md: minimum _guaranteed_ reconstruction speed: 1000 KB/sec/disc. Sep 21 19:30:46 zaphod kernel: md: using maximum available idle IO bandwith (but not more than 200000 KB/sec) for reconstruction. Sep 21 19:30:46 zaphod kernel: md: using 128k window, over a total of 10176 blocks. Sep 21 19:30:47 zaphod kernel: md: md0: sync done. I'm using raidtools2 version 1.00.3, and kernel 2.6.0-test5 with the following configuration: CONFIG_MD=y CONFIG_BLK_DEV_MD=y # CONFIG_MD_LINEAR is not set # CONFIG_MD_RAID0 is not set CONFIG_MD_RAID1=y # CONFIG_MD_RAID5 is not set # CONFIG_MD_MULTIPATH is not set CONFIG_BLK_DEV_DM=y # CONFIG_DM_IOCTL_V4 is not set -- Dick Streefland //// De Bilt dick.streefland@xs4all.nl (@ @) The Netherlands ------------------------------oOO--(_)--OOo------------------ - To unsubscribe from this list: send the line "unsubscribe linux-raid" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
