Forum Discussion

Aspirant

Mar 26, 2017

ReadyNas 104 RAID 0 Failure - Can I re-establish RAID 0 between drives?

Good Morning - Ive had this readynas unit for about 3 years now and never any issues. This weekend it started acting strange and the windows computers using the shares started to have long wait time...

Installation & Upgrade

Tips from other users

sunsparc

Aspirant

Mar 27, 2017

To add additional information, I SSH'd into the device and checked the dmesg..md127 is the raid mount point...Does this mean this can't be repaired??

[ 17.989481] BTRFS critical (device md127): corrupt leaf, slot offset bad: block=73203712,root=1, slot=232
[ 17.990383] BTRFS critical (device md127): corrupt leaf, slot offset bad: block=73203712,root=1, slot=232
[ 17.991115] BTRFS: Failed to read block groups: -5
[ 18.020868] BTRFS: open_ctree failed

mdgm-ntgr
NETGEAR Employee Retired
Mar 27, 2017
Updating the firmware in a situation like this is not recommended unless you get professional advice from us that determines that it is.

Using RAID-0 is inherently risky. If a disk fails all RAID-0 volumes using that disk are lost.

Data recovery is much more likely to be successful if a redundant RAID level is used.

What are the SMART stats of your disks like?
- sunsparc
  Aspirant
  Mar 28, 2017
  Both disks in the array look good. When i do a btrfs check /mnt/md127 thats when I see the bad block. When trying to mount thats when the message in dmesg is generated..
  - FramerV
    NETGEAR Employee Retired
    Apr 03, 2017
    Hi sunsparc,
    
    Let me see if I can get some inputs from mdgm about this.
    
    Regards,