> > Hello. > > > > I'd like to ask you to implement the following ... > > > > The current RAID1 solution is not robust enough to protect the data > > against random data corruptions. Such corruptions usually happen > > when an unreadable sector is found by the drive's electronics > > and when the drive's trying to reallocate the sector to the spare > > area. > > There's no guarantee that the reallocated data will always match > > the original stored data since the drive sometimes can't read the > > data > > correctly even with several retries. That unfortunately completely > > masks > > the issue, because the sector can be read by the OS without > > problems > > even if it doesn't contain correct data. Would it be possible > > to implement chunk checksums to avoid such data corruptions? > > If a corrupted chunk is encountered, it would be taken from the > > second > > drive and immediately synced back. This would have a small > > performance > > and capacity impact (1 sector per chunk to minimize performance > > impact > > caused by unaligned granularity = 0.78% of the capacity with 64k > > chunks). > > > > Please, let me know if you find my request reasonable or not. > > I believe alternative to that is implemented via the Linux RAID MD > badblock feature. Hello keld ... I couldn't find any info about that feature. Could you please give me more info about that? Thanks in advance. Regards, Jaromir. > > best regards > keld > -- 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
