Anand Jain posted on Wed, 10 Jun 2015 09:19:37 +0800 as excerpted: > On 06/09/2015 01:10 AM, Martin wrote: >> Hello! >> >> I have a raid1-btrfs-system (Kernel 3.19.0-18-generic, Ubuntu Vivid >> Vervet, btrfs-tools 3.17-1.1). One disk failed some days ago. I could >> remount the remaining one with "-o degraded". After one day and some >> write-operations (with no errrors) I had to reboot the system. And now >> I can not mount "rw" anymore, only "-o degraded,ro" is possible. >> >> In the kernel log I found BTRFS: too many missing devices, writeable >> mount is not allowed. >> >> I read about https://bugzilla.kernel.org/show_bug.cgi?id=60594 but I >> did no conversion to a single drive. >> >> How can I mount the disk "rw" to remove the "missing" drive and add a >> new one? >> Because there are many snapshots of the filesystem, copying the system >> would be only the last alternative ;-) > > How many disks you had in the RAID1. How many are failed ? The answer is (a bit indirectly) in what you quoted. Repeating: >> One disk failed[.] I could remount the remaining one[.] So it was a two-device raid1, one failed device, one remaining, unfailed. -- Duncan - List replies preferred. No HTML msgs. "Every nonfree program has a lord, a master -- and if you use the program, he is your master." Richard Stallman -- To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
