4.19.42+ kernel broke the file system, LZ4 issue, how to revert to prev kernel?

[Gyuunduh]

(21st May, 2019 10:21 PM)Nachteule Wrote:  

(21st May, 2019 08:41 AM)Gyuunduh Wrote:  

(21st May, 2019 06:41 AM)Nachteule Wrote:  Lock kernel package from being updated:

Terminal

echo "linux-image-bcm2836 hold" | sudo dpkg --set-selections

Remove lock:

Terminal

echo "linux-image-bcm2836 install" | sudo dpkg --set-selections

Thank you for a really detailed and thorough answer.

I just wasn't patient enough to wait . I ran the System rescue cd -iso from an USB stick on my Windows PC, trying to back up the contents of my home folder and config files for samba, cups and such from the Xbian SD card. It turned out that most of the files were unreadable, I'm not sure if the failed xbian-storager compress corrupted those or if there was something exotic with the way xbian handles the file system and made them unreadable for system rescue cd.

Hmmm, I'm wondering how Rescue-CD was able to access a LZ4 compressed btrfs file system. Can't believe that this system has LZ4 compression support on board.

I'm sure, that neither Rescue-CD nor xbian-storager compress destroyed fs though. xbian-storager compress command never touches existing subvolumes until operation has been completed successfully and a reboot has been done

Their website says that the btrfs with LZ4 compression support is there and it managed to read at least some of the files, so at least partially it worked. I don't know if all the files would've been recoverable. There could've been problems also somewhere else.

Quote:

Quote:So I went my way, made backups of those files I could, wiped the SD card and started off with a fresh install. :| There seems to be some problems with the fresh install, the initial configuration wizard and the Kodi xbian config both freezing when loading the list of packages installed and to be installed. Oh well, I'll start another thread for that.

Does the problem still exists?

The latest image had the latest kernel and all the previous data had already been lost. I guess you can say the problem of not being able to access to file system doesn't exist if the file system has been wiped

Quote:

Quote:And again, a million thanks for a really good answer. Whether the filesystem already been corrupted or if it could have been saved, I guess we won't know. Soon I'll have a fully working Xbian running again

You're welcome