Hi, I have a shared storage environment (2 disks accessible by 2 nodes through iSCSI) and am trying to assemble the same RAID-1 array on both nodes. Whenever I try to assemble the RAID-1 array on the second node, it always begins reconstructing the mirror. My guess for why it's doing this is that after the first node assembles the array, it marks a dirty flag in the RAID metadata blocks on disk. (It only resets the dirty flag when it deactivates the array). When the second node tries to assemble the same array, it reads the metadata blocks and sees that it is dirty. Then it proceeds with reconstruction. My question is does reconstruction happen, simply because the dirty flag is set? Why doesn't it first check if the checksums on all the mirror disks match (i.e. the array is consistent) and bypass reconstruction? Btw, I plan for both nodes to be accessing different partitions in the array, so there shouldn't be any synchronization problems. Also, I'm using mdadm-1.2.0 for my testing. Regards, Kai-Min Sung - 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
