On Mon, 4 Feb 2019 at 18:55, Austin S. Hemmelgarn <ahferro...@gmail.com> wrote: > > On 2019-02-04 12:47, Patrik Lundquist wrote: > > On Sun, 3 Feb 2019 at 01:24, Chris Murphy <li...@colorremedies.com> wrote: > >> > >> 1. At least with raid1/10, a particular device can only be mounted > >> rw,degraded one time and from then on it fails, and can only be ro > >> mounted. There are patches for this but I don't think they've been > >> merged still. > > > > That should be fixed since Linux 4.14. > > > > Did the patches that fixed chunk generation land too? Last I knew, 4.14 > had the patch that fixed mounting volumes that had this particular > issue, but not the patches that prevented a writable degraded mount from > producing the issue on-disk in the first place.
A very good question and at least 4.19.12 creates single chunks instead of raid1 chunks if I rip out one disk of two in a raid1 setup and mount it degraded. So a balance from single chunks to raid1 chunks is still needed after the failed device has been replaced.
