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rndu2000 : no volume
Hello,
I have a rndu2000 to which I had a single 1TB hard drive.
I wanted to add a second 1TB hard drive and since then nothing works. Through the administration interface I have "No volume exists. Some menu options are available only if a valid volume exists."
I can formatting the two hard drives, but I don't know how to do it.
Regards,
Welcome to the Community!
If you want to use both 1TB drives you have to use Flex-RAID and use both drives as JBOD. If it is already setup, you will have to switch to Flex-RAID and then destroy the volume to create two JBOD.
HTH
Happy New Year!
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I can take a look at the logs for you, if you like.
Follow instructions here: https://kb.netgear.com/25625/How-do-I-send-ReadyNAS-system-logs-to-NETGEAR-Support#OS4
Upload the log-set to Google Drive, Dropbox or similar and PM me the link to download them. Don't post the logs publically here.
Then I can take a look and see what is going on. Cheers
Hello
PM Sent.
Hi bpito
Thanks for sending the logs.
On the 31st, the raid/volume started to experience problems for some reason. Not really clear why as your disks are healthy.
Thu Dec 31 18:42:19 CET 2020 !! root !! The volume check did not complete correctly.
But the data raid cannot start, as you can see we are missing md2 below.
Personalities : [raid0] [raid1] [raid10] [raid6] [raid5] [raid4] md1 : active raid1 sda2[0] sdb2[1] 524276 blocks super 1.2 [2/2] [UU] md0 : active raid1 sda1[0] sdb1[1] 4193268 blocks super 1.2 [2/2] [UU] unused devices: <none>
Note that even if you are using 1 disk, there is still an underlying raid. The OS raid (md0) and the swap raid (md1) did sync properly with the new disk but not the data raid. Looking at the disk partition tables it appears that the original disk is missing the 3rd partition which is used in the data raid. There should be a 3rd partition in the below output.
***** partition output for sda ***** Disk /dev/sda: 1953525168 sectors, 931.5 GiB Number Start (sector) End (sector) Size Code Name 1 64 8388671 4.0 GiB FD00 2 8388672 9437247 512.0 MiB FD00
So, something happened that caused the disk to loose the data partition. This should, on paper, be quite easy to fix for Netgear as the OS4 models holds a partition history log. They can go back in these logs and from those recreate the missing partition. The data should remain intact.
If you care about the data, contact Netgear and have them help look at this. It will be a paid service as all warranties on this unit would be gone I am sure. If you don't care about the data on the NAS or have backups, then just do a factory reset (from the boot menu) and you should be good. It will wipe all data of course and re-create everything anew.
https://kb.netgear.com/21100/How-do-I-access-the-boot-menu-on-my-ReadyNAS-Ultra-2-Ultra-2-Plus-or-Pro-2-Duo-v2
CheersHello, a big thank you for your answer !
I can lose the data. I will therefore test the reset.
(the december 31 error is due to the fact that when I inserted the second disc I thought it was doing nothing, so I ejected it and put it back :( )
Regards,
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