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Forum Discussion
Factory reset ReadyNas RN 204 without loosing data on Disk 2
Hi all, I recently experienced a failed drive (disk 1) in my ReadyNas 204 (OS 6.10), which is fine as I have the data backed up. However, I have also been experiencing the "volume root is 100 full"...
Hi all
Many thanks for your replys, much appreciated
The Ready NAS is set up as JBOD, with 2 separate Drives. Disk 1 6TB, Disk 2 10 TB..(Appologies, I should have mentioned this in my first post)
Disk 1 failed, however I do have all that data backed up. I also have a back up of Disk 2 Data.
The "volume root is 100 full" message, started appearing prior to the failure of Disk 1
My Linux / ReadyNAS OS knowledge is limited, but can follow SSH / OS Command instructions.
In simple terms, I was enquiring about how feasible it would be to do the following:
1. Insert replacement disk into Bay 1, Remove Disk 2 from Bay 2 (Both JBOD)
2. Restore OS to Factory Reset, (to clear anything causing the 100% full message)
3. Transfer from Disk 1 back up, data back to new Disk 1
4. Insert Disk 2 back into Bay 2 - without loosing its data and avoiding the time and hassle of having to also transfer the files from the disk 2 backup
I hope the above makes sense,
Again many thanks for your suggestions so far.
sixx wrote:
In simple terms, I was enquiring about how feasible it would be to do the following:
1. Insert replacement disk into Bay 1, Remove Disk 2 from Bay 2 (Both JBOD)
2. Restore OS to Factory Reset, (to clear anything causing the 100% full message)
3. Transfer from Disk 1 back up, data back to new Disk 1
4. Insert Disk 2 back into Bay 2 - without loosing its data and avoiding the time and hassle of having to also transfer the files from the disk 2 backup
As I tried to suggest before, I think the following procedure should work:
- Export disk 2 from the volume settings wheel and then remove the disks.
- Insert replacement disk into bay 1, and do a factory install (if the disk it blank, there is no need to use the boot menu).
- Reconfigure the NAS, and restore disk 1 files from backup
- power down the NAS, and reinsert disk 2.
When the NAS is powered up, disk 2 should be imported. Note there is no import control in the web ui.
sixx wrote:
The "volume root is 100 full" message, started appearing prior to the failure of Disk 1
My Linux / ReadyNAS OS knowledge is limited, but can follow SSH / OS Command instructions.
The tricky part on cleaning this yourself is finding the files that are causing the problem. Since disk 2 is media, I am wondering if you are running plex. Plex transcoding files sometimes aren't deleted (at least that was an issue some time ago). If you let us know what apps you have installed, we might be able to offer concrete suggestions on what to look for.
Anyway, to look for yourself, you first enable ssh from system->settings->services. You log into the NAS as root, using the admin password. For instance from the Windows search bar (or terminal if you use macOS) you can enter
ssh root@nas-ip-address
The OS partition has a number of mount points, and they get in the way of investigating the problem. You overcome that by remounting the root onto /mnt and then examine /mnt.
mount --bind / /mnt
You can undo this later on by entering
cd /
umount /mntNote it is umount, not unmount. Also, this command will fail if you are in /mnt (which is why I put the cd command in front of it).
du -csh * is a good way to find folders that are too full. Basically you start with /mnt and then descend into the largest folder and repeat.
Here's what I see on my RN526 - comparing yours with this should help get you started:
root@NAS:/mnt# du -csh *
0 apps
6.4M bin
0 boot
0 data
24K dev
11M etc
30M frontview
0 ftp_ban.tbl
0 home
4.0K homes
33M lib
4.0K lib64
0 media
0 mnt
4.6M opt
0 proc
40K root
0 run
11M sbin
0 srv
0 sys
0 tmp
273M usr
675M var
1.1G total
root@NAS:/mnt#
StephenB wrote:As I tried to suggest before, I think the following procedure should work:
- Export disk 2 from the volume settings wheel and then remove the disks.
- Insert replacement disk into bay 1, and do a factory install (if the disk it blank, there is no need to use the boot menu).
- Reconfigure the NAS, and restore disk 1 files from backup
- power down the NAS, and reinsert disk 2.
When the NAS is powered up, disk 2 should be imported. Note there is no import control in the web ui.
I have performed export/import experiments, and it worked fine. The steps I was doing were to figure out a way for people to recover from an accidental export of the primary volume, so my test would be more accurately duplicated by adding a couple steps:
- Boot the NAS with just Drive 2.
- DESTROY the now non-existent volume from Drive 1. This will make Drive 2 the primary drive.
- Now proceed as above.
I've also done an export when the primary drive is fine, but yours isn't, and I don't know if that will make any difference.
Note that once you have exported the drive 2 volume, it cannot be made back into a primary volume -- it must be imported into a unit with an existing volume and that unit must already be in FlexRAID mode. That existing volume cannot have the same name as the one being imported, and no share names can be duplicated, either.
When you are done, you will have to go in and set permissions for all shares on the imported volume, including doing a permissions reset for the existing files.
The wrinkle in this is that the full OS partition may limit your ability to do the steps leading to the export. volume_util, accessible via SSH, seems to have the same capabilities, but I've not used it for this. If you can at least partly clean the OS partition first, it would probably help. Not knowing that you won't get stuck somewhere in between with a non-importable volume is one good reason to insure you have a backup of the files. As I said in a reply to 8ohmh , you could also make a clone of Drive B before doing anything since some of the steps are irreversible, but I doubt you'd have any better luck trying again on a clone, so I don't think it adds a lot. You just have to be prepared to start everything from fresh if it goes south, restoring the media files from backup.
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