Thank you everybody for your support, care, cheerful comments and understandable criticism. I am in the process of backing up every file. Could you please answer two questions?: 1. I am testing various files and all seem readable. Is there a way to list every file that resides on a particular device (like /dev/sdc1?) so as to check them? There are a handful of files that seem corrupted, since I get from scrub: """ BTRFS: checksum error at logical 10792783298560 on dev /dev/sdc1, sector 737159648, root 5, inode 1376754, offset 175428419584, length 4096, links 1 (path: long/path/file.img) """, but are these the only files that could be corrupted? 2. Chris mentioned: A. On Mon, Feb 9, 2015 at 12:31 AM, Chris Murphy <lists@xxxxxxxxxxxxxxxxx> wrote: > [[[try # btrfs device delete /dev/sdc1 /mnt/mountpoint]]]. Just realize that any data that's on both the > failed drive and sdc1 will be lost and later B. On Mon, Feb 9, 2015 at 1:34 AM, Chris Murphy <lists@xxxxxxxxxxxxxxxxx> wrote: > So now I have a 4 device > raid1 mounted degraded. And I can still device delete another device. > So one device missing and one device removed. So when I do the "# btrfs device delete /dev/sdc1 /mnt/mountpoint" the normal behavior would for the files that are located in /dev/sdc1 (and also were on the missing/failed drive) to be transferred to other drives and not lose them, right? (Does B. hold and contradict A.?) Long PS: Obviously, I have backed-up critical data that "I would almost consider committing suicide" if I lost them with services like tarsnap/dropbox/etc. However, I did not do this for non-critical-yet-important data-that-would-make-me-depressed-if-I-lost-them-for-some-months because of budget constraints. For network stumblers, RAID-1 btrfs was working for me for a couple years and had the sense that I was covered. I obviously was not since I neglected looking at dmesg after each scrub. Second, I rushed and added both of the new 6TB in the array, instead of only one of them and using the second for backing up my data. After the whole process, I suppose I will have a more robust array structure the RED/RAID drives and appropriate cron jobs as indicated in the thread. -- 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
