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RN314 don't boot anymore after trying to fix "no space left on device" error.
Hi, Here's the full story that led me to a ReadyNAS RN314 that no longer starts with a "flush_space+5a" message on the LCD. Actually, after seeing that I lost (I mean visible on the network) th...
curso wrote:
After googled a bit, I found that maybe reinstalling the OS via the boot menu can soved the issue without loosing all my 8TB of data. I tried and unfortunatly no change I got still the "flush_space+5a" like in the normal boot mode.
That doesn't work when the OS partition is full. The reinstall does a partial reinstall, and doesn't delete the files that are filling it up.
curso wrote:
even the I-nodes were not used at 100%.
There are no inodes in BTRFS, and the RN314 uses BTRFS for the OS partition as well as the data volume.
curso wrote:
I don't want to try the USB recovery method as I understood well the /dev/md0 will be reflashed and all my data on /dev/md127 will be reset loosing all my data.
I there a way to boot like in Tech support mode (via the boot menu)
Don't try a USB recovery at this point. It will not destroy your data, but I don't think it will fix your problem either.
If you boot up in tech support mode, you can access the NAS using Telnet. If you use Windows, then I recommend using putty as the client.
Make sure you select telnet as protocol (using the pulldown on the right).
When you connect to the NAS, log in as root. The password is infr8ntdebug.
Once logged in, type
rnutil chroot
That will start the raid, mount the OS partition and do a chroot. It will not assemble or mount the data volume. If the issue is the OS partition, then we shouldn't need to mount the data volume manually.
If that works, then try entering
btrfs fi usage //
Copy/paste the output into a reply here.
Hi Stephen,
Thanks for your quick reaction.
I just logged in as root in Tech support mode.
Launched the rnutil chroot command but I got a "killed" message like you can see
I guess it failed with the message "flush_space+5a" on the LCD. I still tried the brtf command in case but it failed.
# btrfs fi usage //
ERROR: not a btrfs filesystem: //
Does
rnutil start_raidsfail the same way?
Here is output of the command, seems a bit better
3C34390V00C6B login: root Password: # rnutil start_raids mdadm: /dev/md/0 has been started with 4 drives. mdadm: /dev/md/1 has been started with 4 drives. mdadm: /dev/md/data-0 has been started with 4 drives. mount: mounting LABEL=7c6e9e38:data on /data failed: No such file or directory Scanned Btrfs device /dev/md/data-0 #the mount on /data failed and indeed, it is empty
You can find here https://drive.google.com/open?id=1--vOp-VNXZAUipZuPT-TFqgmk7ltMuwi&usp=drive_fs the dmesg outpout in case you can find some usefull information.
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