Description of problem: Samsung pushed a new update to workaround EVO 840 series issues. That firmware EXT0DB6Q is now breaking queued trim commands, resulting in I/O errors and potential filesystem corruptions. Systems are then unable to boot, unless all trim features are disabled. A patch has just been accepted for vanilla kernels. http://marc.info/?l=linux-ide&m=143075644305457&w=2 A backport might be required to 21/22 as this is widespread hardware. Additional info: https://bugs.launchpad.net/ubuntu/+source/fstrim/+bug/1449005
Thanks for the report. I also saw this patch and was planning to backport it today. I've done so now and pushed it to Fedora git on all branches. It will be included in the next build on each.
kernel-4.0.2-300.fc22 has been submitted as an update for Fedora 22. https://admin.fedoraproject.org/updates/kernel-4.0.2-300.fc22
kernel-3.19.7-100.fc20 has been submitted as an update for Fedora 20. https://admin.fedoraproject.org/updates/kernel-3.19.7-100.fc20
kernel-3.19.7-200.fc21 has been submitted as an update for Fedora 21. https://admin.fedoraproject.org/updates/kernel-3.19.7-200.fc21
Package kernel-3.19.7-100.fc20: * should fix your issue, * was pushed to the Fedora 20 testing repository, * should be available at your local mirror within two days. Update it with: # su -c 'yum update --enablerepo=updates-testing kernel-3.19.7-100.fc20' as soon as you are able to, then reboot. Please go to the following url: https://admin.fedoraproject.org/updates/FEDORA-2015-7911/kernel-3.19.7-100.fc20 then log in and leave karma (feedback).
kernel-4.0.2-300.fc22 has been pushed to the Fedora 22 stable repository. If problems still persist, please make note of it in this bug report.
I did not upgrade firmware yet. Finally updated after kernel update. Not easily as their dos updater is broken as well on amd apu :/ Seems working on two hosts under kernel-3.19.7-200.fc21
kernel-3.19.7-200.fc21 has been pushed to the Fedora 21 stable repository. If problems still persist, please make note of it in this bug report.
kernel-3.19.8-100.fc20 has been submitted as an update for Fedora 20. https://admin.fedoraproject.org/updates/kernel-3.19.8-100.fc20
kernel-3.19.8-100.fc20 has been pushed to the Fedora 20 stable repository. If problems still persist, please make note of it in this bug report.