On 01/12/2023 03:00 AM, Simon Matter wrote: >> Hallo Simon, >> >>> Anyway, the splitting of large disks has additional advantages. Think of >>> what happens in case of a failure (power loss, kernel crash...). With >>> the >>> disk as one large chunk, the whole disk has to be resynced on restart >>> while with smaller segments only those which are marked as dirty have to >>> be resynced. This can make a bit difference. >> I am not sure if this is true. If a underlying disk fails, it will mark >> all partitions on that disk as dirty, so you will have to resync them all >> after replacing or readding the disk into the array. > No, I'm not talking about a complete disk failure, my example wasn't a > failure at all but a server problem like power loss, kernel crash and such > things. In this case only the segments which were not in sync at the time > of the crash will be resynced on restart, not the whole disk. > > The same is, if a read error happens on one disk, only the partial segment > will lose redundancy and not the whole contents of the disk. > > That's a huge improvement especially on very large disks. > > Simon > > _______________________________________________ > CentOS mailing list > CentOS at centos.org > https://lists.centos.org/mailman/listinfo/centos I have not seen anyone comment on my plan to after partitioning the new SSDs that I have to do a new minimal install of C7 and then copy the old disk partitions - with the exceptions of /boot and /boot/efi - over the newly made installation? Am I correct in that is needed since the old installation was not using RAID and and the new one does? Both of course are using C7.