First of all thank you very much for your quickly response. I am glad to say you we fixed that issue thanks to your post :)
The problem was we formatted the disk (sb5) using some tool from newer Ubuntu version which put metadata_csum feature on it. And because using on Ubuntu 14.04 it had some trouble with it. We also realize that the warning message on every reboot was for the impossibility to perform a fsck due to incompatibility with metdata_csum feature. Summarizing, we did the following: 1 - Fix checksum errors using SystemRescue live CD and executing the e2fsck tool (1.43.3 which is fully compatible with metadata_csum. 2 - Once we were sure there were not any error, we proceed disabling metadata_csum, using "tune2fs -O ^metadata_csum /dev/sdb5" with the file system umounted (as you advised us). 3 - Once boot up, it made a fsck successfully and no more warnings about disck errors. Thank you very much! Greetings -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1637779 Title: ext4 filesystem fails randomly with checksum error To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/e2fsprogs/+bug/1637779/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
