> a "replace" of the 3rd 6 TB drive onto a second 8 TB drive is currently in > progress (at high speed).
This second replace is now finished, and it looks OK now: # btrfs replace status /data Started on 16.Jun 01:15:17, finished on 16.Jun 11:40:30, 0 write errs, 0 uncorr. read errs Transfer rate of ~134 MiB/s, or ~2.2 hours per TiB. # btrfs device usage /data /dev/dm-2, ID: 3 Device size: 5.46TiB Data,RAID1: 4.85TiB Metadata,RAID1: 3.00GiB Unallocated: 620.03GiB /dev/mapper/AAAAAAAA_enc, ID: 1 Device size: 7.28TiB Data,RAID1: 6.66TiB Metadata,RAID1: 12.69GiB System,RAID1: 64.00MiB Unallocated: 620.31GiB /dev/mapper/BBBBBBBB_enc, ID: 2 Device size: 7.28TiB Data,RAID1: 4.79TiB Metadata,RAID1: 9.69GiB System,RAID1: 64.00MiB Unallocated: 676.31GiB However, while the replace was in progress, it showed weird stuff, like this percentage > 100 today at 9am (~3 hours before completion): # btrfs replace status /data 272.1% done, 0 write errs, 0 uncorr. read errs Also, contrary to he first replace, filesystem info was not updated during the replace, and looked like this (for example): # btrfs device usage /data /dev/dm-2, ID: 3 Device size: 5.46TiB Data,RAID1: 4.85TiB Metadata,RAID1: 3.00GiB Unallocated: 620.03GiB /dev/dm-3, ID: 2 Device size: 5.46TiB Data,RAID1: 4.79TiB Metadata,RAID1: 9.69GiB System,RAID1: 64.00MiB Unallocated: 676.31GiB /dev/mapper/AAAAAAAA_enc, ID: 1 Device size: 7.28TiB Data,RAID1: 6.66TiB Metadata,RAID1: 12.69GiB System,RAID1: 64.00MiB Unallocated: 620.31GiB /dev/mapper/BBBBBBBB_enc, ID: 0 Device size: 7.28TiB Unallocated: 5.46TiB I'm happy it worked, just wondering why it behaved weirdly this second time. During the first replace, my Fedora 23 was booted in emergency mode, whereas for the second time it was booted normally. I'm going to reboot now to update Kernel 4.5.5 to 4.5.6 and then continue replacing drives. -- To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html