** Description changed: + [Impact] + RAID and LVM users may run into a cryptic warning on boot from GRUB; because some variants of RAID and LVM are not supported for writing by GRUB itself. GRUB would typically try to write a tiny file to the boot partition for things like remembering the last selected boot entry. + + [Test Case] + On an affected system (typically any RAID/LVM setup where the boot device is on RAID or on a LVM device), try to boot. Without the patch, the message will appear, otherwise it will not. + + [Regression Potential] + The potential for regression is minimal as the patch involves enforcing the fact that diskfilter writes are unsupported by grub in menu building scripts, which will automatically avoid enabling recordfail (the offending feature which saves GRUB's state) if the boot partition is detected to be on a device which does not support diskfilter writes. + + ---- + Once grub chooses what to boot to, an error shows up and will sit on the screen for approx. 5 seconds "Error: diskfilter writes are not supported. Press any key to continue..." From what I understand, this error is related to raid partitions, and I have two of them (md0, md1). Both partitions are used (root and swap). Raid is assembled with mdadm and are raid0 This error message started appearing right after grub2 was updated on 01/27/2014. System: Kernel: 3.13.0-5-generic x86_64 (64 bit) Desktop: KDE 4.11.5 Distro: Ubuntu 14.04 trusty Drives: HDD Total Size: 1064.2GB (10.9% used) 1: id: /dev/sda model: SanDisk_SDSSDRC0 size: 32.0GB 2: id: /dev/sdb model: SanDisk_SDSSDRC0 size: 32.0GB 3: id: /dev/sdc model: ST31000528AS size: 1000.2GB RAID: Device-1: /dev/md1 - active raid: 0 components: online: sdb2 sda3 (swap) Device-2: /dev/md0 - active raid: 0 components: online: sdb1 sda1 ( / ) Grub2: grub-efi-amd64 version 2.02~beta2-5 ProblemType: Bug DistroRelease: Ubuntu 14.04 Package: grub-efi-amd64 2.02~beta2-5 ProcVersionSignature: Ubuntu 3.13.0-5.20-generic 3.13.0 Uname: Linux 3.13.0-5-generic x86_64 NonfreeKernelModules: nvidia ApportVersion: 2.13.2-0ubuntu2 Architecture: amd64 CurrentDesktop: KDE Date: Wed Jan 29 17:37:59 2014 SourcePackage: grub2 UpgradeStatus: Upgraded to trusty on 2014-01-23 (6 days ago)
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1274320 Title: Error: diskfilter writes are not supported To manage notifications about this bug go to: https://bugs.launchpad.net/grub/+bug/1274320/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
