I solved my problem! Recently I have published a guide on how to install linux on loopback LVM devices booting from USB (so without have to install grub on the internal disk, leaving it as original). Here is the guide: https://github.com/DareDevil73/linux-on-loopback-usb .
Then I fallen in the freeze issue on high memory load and I observed an abnormal swap space usage (all the RAM eaten, and swap usage near to zero). Obviously the LVM swap partition was mounted and working properly, but I don't known why the kernel did not use it as expected. I tried an alternative solution. I have created a swap loopback file (not LVM) and the freeze is gone. Now the swap file is used as it would be, and the OS never freeze! Please look at https://github.com/DareDevil73/linux-on-loopback-usb #known-issues to get deeper information. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1526537 Title: blk_update_request: I/O error To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1526537/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs