Good day, I have an itch I'm hoping somebody can provide me information with to scratch it. Please be patient, I'm not very well versed in all the technical information regarding RAID, so I'm still finding my way around. Lets start with the itch. I'm looking for a way to take 3 drives and create one pool. This is similar to linear mode, but in this case if a drive in the linear mode fail the rest of the pool is intact and just the missing files are removed from the "device" >From my reading it looks like linear mode is the most likely candidate, but there is no guarantee that the remaining data will be accessible. "If one disk crashes you will most probably lose all your data. You can however be lucky to recover some data, since the filesystem will just be missing one large consecutive chunk of data" Would it not be possible to add functions to linear mode to mark this missing chunks as "bad blacks" and let the FS deal with it as such thereby allowing you to mount the linear device as per normal and still access the remaining data ? Id this is not possible, is there not some other way to implement this ? I see there is some mails regarding adding additional drives to linear as well and that the correct way is to stop the linear array and recreate it with additional drives. Is this correct ? I also see there was work being done on extending the array while online. Was this ever done ? Regards Henti -- 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