Greetings ... I asked this question about two weeks ago http://www.issociate.de/board/post/498227/Ext3_convert_to_RAID1_....html and have had not response, so I am going to try and re-phrase and hope that somebody can confirm my test case. Thanks. Wanting to convert an already created and populated ext3 filesystem. I unmounted the filesystem, ran e2fsck -f /dev/sdb1 to check that the current filesystem had no errors. Then ran mdadm --create /dev/md0 --level=1 -n 1 /dev/sdb1 --force to create the RAID1 device, answered yes to the question. Ran e2fsck -v /dev/md0 to check that the RAID1 device had no filesystem corruption on it, which it did not. Added a spared RAID device using mdadm --add /dev/md0 /dev/sdc1 Then grew the RAID1 device to two compents with mdadm --grow /dev/md0 --raid-disks=2 --backup-file=/root/raid1.backup.file Did another filesystem check once the RAID finished rebuilding and all seemed fine. Double checked that the data on the RAID was the same as the original data by diffing the two, again all was fine. Now is this just lucky or would this be an acceptable way to convert an existing ext3 filesystem to RAID1? Thanks Mailed LeeT -- 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
