On 11/10/2015 04:02 PM, Mathias Mueller wrote: > /dev/md0 has unsupported feature(s): FEATURE_C16 FEATURE_C17 FEATURE_C18 > FEATURE_C19 FEATURE_C21 FEATURE_C22 FEATURE_C23 FEATURE_C25 FEATURE_C27 > FEATURE_C28 FEATURE_I29 FEATURE_R29 > e2fsck: Get a newer version of e2fsck! None of the feature bits are documented to exist. The choice of first drive must be wrong. > I created the array with this command: > > mdadm --create --assume-clean -l5 -n4 --chunk 64 --data-offset 1024 > --metadata 1.2 /dev/md0 ...... > > This both combinations Well, I gave you *four* combinations for order, and two suggestions for chunk size. Eight combinations to try. > The devices names are now different, but I adjusted the names by serial > numbers as you told. Ok. > Also mdadm --examine on on of the drives tells "Data offset: 2048 > Sectors" when mdadm --create --data-offset 1024 is used. Is this normal? > It's confusing me (using --data-offset 2048 on creation gives "Data > offset: 2048 Sectors"). mdadm must be enforcing a minimum offset. Phil -- 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
