xylcro Posted April 10, 2021 Share Posted April 10, 2021 Hello all, I just upgraded my Unraid server to version 6.9.2 from 6.9.0. After a reboot I was greeted with a kernel panic: kernel panic - not syncing: VFS: Unable to mount root fs on unknown-block(0,0) After flashing and testing another flash drive, I got the same message. I then flashed version 6.9.0 back on to the previous flash drive and everything is now working again. I am yet to run memtest, doing that when I go to bed in a couple of hours and leave it overnight, but I do have ECC memory so isn't that supposed to self-correct errors? As I don't really have the money to buy a new server, I want to keep this *** running for as long as I can. So if it means not upgrading, so be it. Attached is a screenshot of the kernel panic. Quote Link to comment
JorgeB Posted April 11, 2021 Share Posted April 11, 2021 11 hours ago, xylcro said: After flashing and testing another flash drive, I got the same message This is still usually flash drive related, you should try another one. Quote Link to comment
xylcro Posted April 28, 2021 Author Share Posted April 28, 2021 I was finnaly able to use another USB, USB 2.0 this time. No errors this time! 1 Quote Link to comment
Marc_G2 Posted April 28, 2021 Share Posted April 28, 2021 (edited) I've just encountered this for the first time today. Still trying to deal with it. Could there be an issue with 6.9.2? It was working for me a while though. Edited April 28, 2021 by Marc_G2 Quote Link to comment
Marc_G2 Posted April 28, 2021 Share Posted April 28, 2021 4 hours ago, xylcro said: I was finnaly able to use another USB, USB 2.0 this time. No errors this time! So did it only work for you after you tried a third USB stick? Did you ever try booting in safe mode? Quote Link to comment
xylcro Posted April 29, 2021 Author Share Posted April 29, 2021 18 hours ago, Marc_G2 said: So did it only work for you after you tried a third USB stick? Did you ever try booting in safe mode? I tried a couple of USB 3.0 drives and got an error on everyone of them, finnaly I tried a random USB 2.0 I had laying around and it worked on the first time. So maybe if you're using USB 3.0, switch to USB 2.0 1 Quote Link to comment
Marc_G2 Posted April 29, 2021 Share Posted April 29, 2021 13 minutes ago, xylcro said: I tried a couple of USB 3.0 drives and got an error on everyone of them, finnaly I tried a random USB 2.0 I had laying around and it worked on the first time. So maybe if you're using USB 3.0, switch to USB 2.0 It turns out my issue was caused by something completely different. But I will keep that in mind going forward. Quote Link to comment
TomH Posted July 29, 2021 Share Posted July 29, 2021 (edited) Hi, today I was updating the unRaid OS (new update today?) and got the same problem as xylcro above. Should I roll back to previous verision? Or changing USB memory again? Do I have to change USB memory every time I update the OS? (I think I had the same problem last time. Or similar.. ) Edit: no, it was about LZMA corrupt (formating the USB-memory fixed that one). Edited July 29, 2021 by TomH Quote Link to comment
itimpi Posted July 29, 2021 Share Posted July 29, 2021 I would suggest you try downloading the zip file for the release and then extract all the bz* type files over-writing those on the flash. 1 Quote Link to comment
TomH Posted July 30, 2021 Share Posted July 30, 2021 Yes!! 😃 Thanks! Downloaded & created a new version of the usb-flash (using the same USB-stick as before). Now the server is alive again! ✌️ But the version I downloaded was 6.9.2 and that was what I had before too(?) Why did I get a request for update the OS then? Have I been hacked? I was updateing some dockers and plugins and then I got a request for updating the OS. Strange... do I need to be worried? Quote Link to comment
itimpi Posted July 30, 2021 Share Posted July 30, 2021 5 minutes ago, TomH said: Why did I get a request for update the OS then? Have I been hacked? You said that you were updating so I assume that was to 6.9.2 ? The reason for the approach I suggested is that I have seen that in the past occasionally that when updating via the GUI the new files for the new release seem to not have been written successfully to the flash resulting in the symptoms you got and rewriting them outside the update process gives you a good copy. 1 Quote Link to comment
TomH Posted July 30, 2021 Share Posted July 30, 2021 I had 6.9.2 before, therefor strange to me that i got the OS update request. I copied all old flash files to a backup disk, created the new flash and copied the old "config" folder to the new flash. But now I see that all my dockers are gone? I have to reinstall all dockers. What did I do wrong? Quote Link to comment
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