On Wed, 2020-05-20 at 15:50 -0700, Samuel Sieb wrote: > On 5/20/20 2:16 PM, Patrick O'Callaghan wrote: > > I formatted 2 1TB drives with ext4 and created a new md volume as > > RAID1. However they are taking many hours to sync, despite being empty. > > Is this normal? > > This is somewhat unclear. It sounds like you formatted the drives > before making the raid. If that's the case, you got it backwards. You > need to make the raid first, then format that. And yes, it has to sync > the entire array first, so however long it takes to read and write 1TB > of data. > > > Also, I presume I should mount the md device, using an fstab entry like > > this: > > > > /dev/md0 /raid ext4 defaults 0 0 > > > > but attempts to do that give an error: > > > > mount: /raid: wrong fs type, bad option, bad superblock on /dev/md0, missing codepage or helper program, or other error. > > That confirms my understanding of what you did. The raid device doesn't > have a filesystem, you need to format it before you can mount it. > > > Number Major Minor RaidDevice State > > 0 8 80 0 active sync /dev/sdf > > 1 8 96 1 active sync /dev/sdg > > It's recommended to partition the drives first and then raid the > partitions. It definitely helps with autodetection. Thanks Samuel. See my reply to Ed. poc _______________________________________________ users mailing list -- users@xxxxxxxxxxxxxxxxxxxxxxx To unsubscribe send an email to users-leave@xxxxxxxxxxxxxxxxxxxxxxx Fedora Code of Conduct: https://docs.fedoraproject.org/en-US/project/code-of-conduct/ List Guidelines: https://fedoraproject.org/wiki/Mailing_list_guidelines List Archives: https://lists.fedoraproject.org/archives/list/users@xxxxxxxxxxxxxxxxxxxxxxx
