Hi everybody, after the replacement of a faulty disk in a md raid setup (Raid 1), we are not able to update grub.
The system is an Ubuntu 12.04.5 LTS, with the latests patches installed, and running Linux version 3.2.0-95-generic (buildd@lgw01-11). Disk replacement procedure involved the following steps: # sgdisk -R /dev/sda /dev/sdb # sgdisk -G /dev/sda # mdadm /dev/mdX -a /dev/sdbX After resync, this failes: # grub-mkdevicemap -n # grub-install /dev/sda /usr/sbin/grub-probe: error: unknown filesystem. Auto-detection of a filesystem of /dev/md1 failed. Try with --recheck. Below is the output of the suggested command. Sadly I could not find any helpful clues while using my favorite search engine. Any help is appreciated. Best regards, Tobias ----------------------------------------------------------------------- # /usr/sbin/grub-probe --device-map="/boot/grub/device.map" --target=fs -v /boot/grub /usr/sbin/grub-probe: info: Scanning for dmraid_nv RAID devices on disk hd0. /usr/sbin/grub-probe: info: the size of hd0 is 5860533168. /usr/sbin/grub-probe: info: the size of hd0 is 5860533168. /usr/sbin/grub-probe: info: Scanning for dmraid_nv RAID devices on disk hd1. /usr/sbin/grub-probe: info: the size of hd1 is 5860533168. /usr/sbin/grub-probe: info: the size of hd1 is 5860533168. /usr/sbin/grub-probe: info: scanning hd0 for LVM. /usr/sbin/grub-probe: info: the size of hd0 is 5860533168. /usr/sbin/grub-probe: info: no LVM signature found. /usr/sbin/grub-probe: info: the size of hd0 is 5860533168. /usr/sbin/grub-probe: info: scanning hd1 for LVM. /usr/sbin/grub-probe: info: the size of hd1 is 5860533168. /usr/sbin/grub-probe: info: no LVM signature found. /usr/sbin/grub-probe: info: the size of hd1 is 5860533168. /usr/sbin/grub-probe: info: Scanning for mdraid09 RAID devices on disk hd0. /usr/sbin/grub-probe: info: the size of hd0 is 5860533168. /usr/sbin/grub-probe: info: the size of hd0 is 5860533168. /usr/sbin/grub-probe: info: Scanning for mdraid09 RAID devices on disk hd1. /usr/sbin/grub-probe: info: the size of hd1 is 5860533168. /usr/sbin/grub-probe: info: the size of hd1 is 5860533168. /usr/sbin/grub-probe: info: Scanning for mdraid1x RAID devices on disk hd0. /usr/sbin/grub-probe: info: the size of hd0 is 5860533168. /usr/sbin/grub-probe: info: the size of hd0 is 5860533168. /usr/sbin/grub-probe: info: Scanning for mdraid1x RAID devices on disk hd1. /usr/sbin/grub-probe: info: the size of hd1 is 5860533168. /usr/sbin/grub-probe: info: the size of hd1 is 5860533168. /usr/sbin/grub-probe: info: Scanning for mdraid09 RAID devices on disk hd0. /usr/sbin/grub-probe: info: the size of hd0 is 5860533168. /usr/sbin/grub-probe: info: the size of hd0 is 5860533168. /usr/sbin/grub-probe: info: Scanning for mdraid09 RAID devices on disk hd0,gpt5. /usr/sbin/grub-probe: info: the size of hd0 is 5860533168. /usr/sbin/grub-probe: info: Scanning for mdraid09 RAID devices on disk hd0,gpt4. /usr/sbin/grub-probe: info: the size of hd0 is 5860533168. /usr/sbin/grub-probe: info: Scanning for mdraid09 RAID devices on disk hd0,gpt3. /usr/sbin/grub-probe: info: the size of hd0 is 5860533168. /usr/sbin/grub-probe: info: Scanning for mdraid09 RAID devices on disk hd0,gpt2. /usr/sbin/grub-probe: info: the size of hd0 is 5860533168. /usr/sbin/grub-probe: info: Scanning for mdraid09 RAID devices on disk hd0,gpt1. /usr/sbin/grub-probe: info: the size of hd0 is 5860533168. /usr/sbin/grub-probe: info: Scanning for mdraid09 RAID devices on disk hd1. /usr/sbin/grub-probe: info: the size of hd1 is 5860533168. /usr/sbin/grub-probe: info: the size of hd1 is 5860533168. /usr/sbin/grub-probe: info: Scanning for mdraid09 RAID devices on disk hd1,gpt5. /usr/sbin/grub-probe: info: the size of hd1 is 5860533168. /usr/sbin/grub-probe: info: Scanning for mdraid09 RAID devices on disk hd1,gpt4. /usr/sbin/grub-probe: info: the size of hd1 is 5860533168. /usr/sbin/grub-probe: info: Scanning for mdraid09 RAID devices on disk hd1,gpt3. /usr/sbin/grub-probe: info: the size of hd1 is 5860533168. /usr/sbin/grub-probe: info: Scanning for mdraid09 RAID devices on disk hd1,gpt2. /usr/sbin/grub-probe: info: the size of hd1 is 5860533168. /usr/sbin/grub-probe: info: Scanning for mdraid09 RAID devices on disk hd1,gpt1. /usr/sbin/grub-probe: info: the size of hd1 is 5860533168. /usr/sbin/grub-probe: info: Scanning for mdraid1x RAID devices on disk hd0. /usr/sbin/grub-probe: info: the size of hd0 is 5860533168. /usr/sbin/grub-probe: info: the size of hd0 is 5860533168. /usr/sbin/grub-probe: info: Scanning for mdraid1x RAID devices on disk hd0,gpt5. /usr/sbin/grub-probe: info: the size of hd0 is 5860533168. /usr/sbin/grub-probe: info: Scanning for mdraid1x RAID devices on disk hd0,gpt4. /usr/sbin/grub-probe: info: the size of hd0 is 5860533168. /usr/sbin/grub-probe: info: Scanning for mdraid1x RAID devices on disk hd0,gpt3. /usr/sbin/grub-probe: info: the size of hd0 is 5860533168. /usr/sbin/grub-probe: info: Scanning for mdraid1x RAID devices on disk hd0,gpt2. /usr/sbin/grub-probe: info: the size of hd0 is 5860533168. /usr/sbin/grub-probe: info: Found array md/1 (mdraid1x). /usr/sbin/grub-probe: info: Scanning for mdraid1x RAID devices on disk hd0,gpt1. /usr/sbin/grub-probe: info: the size of hd0 is 5860533168. /usr/sbin/grub-probe: info: Scanning for mdraid1x RAID devices on disk hd1. /usr/sbin/grub-probe: info: the size of hd1 is 5860533168. /usr/sbin/grub-probe: info: the size of hd1 is 5860533168. /usr/sbin/grub-probe: info: Scanning for mdraid1x RAID devices on disk hd1,gpt5. /usr/sbin/grub-probe: info: the size of hd1 is 5860533168. /usr/sbin/grub-probe: info: Scanning for mdraid1x RAID devices on disk hd1,gpt4. /usr/sbin/grub-probe: info: the size of hd1 is 5860533168. /usr/sbin/grub-probe: info: Found array md/3 (mdraid1x). /usr/sbin/grub-probe: info: Scanning for mdraid1x RAID devices on disk hd1,gpt3. /usr/sbin/grub-probe: info: the size of hd1 is 5860533168. /usr/sbin/grub-probe: info: Found array md/2 (mdraid1x). /usr/sbin/grub-probe: info: Scanning for mdraid1x RAID devices on disk hd1,gpt2. /usr/sbin/grub-probe: info: the size of hd1 is 5860533168. /usr/sbin/grub-probe: info: Scanning for mdraid1x RAID devices on disk hd1,gpt1. /usr/sbin/grub-probe: info: the size of hd1 is 5860533168. /usr/sbin/grub-probe: info: Found array md/0 (mdraid1x). /usr/sbin/grub-probe: info: scanning md/0 for LVM. /usr/sbin/grub-probe: info: no LVM signature found. /usr/sbin/grub-probe: info: scanning md/2 for LVM. /usr/sbin/grub-probe: info: no LVM signature found. /usr/sbin/grub-probe: info: scanning md/3 for LVM. /usr/sbin/grub-probe: info: no LVM signature found. /usr/sbin/grub-probe: info: scanning md/1 for LVM. /usr/sbin/grub-probe: info: no LVM signature found. /usr/sbin/grub-probe: info: scanning hd0 for LVM. /usr/sbin/grub-probe: info: the size of hd0 is 5860533168. /usr/sbin/grub-probe: info: no LVM signature found. /usr/sbin/grub-probe: info: the size of hd0 is 5860533168. /usr/sbin/grub-probe: info: scanning hd0,gpt5 for LVM. /usr/sbin/grub-probe: info: the size of hd0 is 5860533168. /usr/sbin/grub-probe: info: no LVM signature found. /usr/sbin/grub-probe: info: scanning hd0,gpt4 for LVM. /usr/sbin/grub-probe: info: the size of hd0 is 5860533168. /usr/sbin/grub-probe: info: no LVM signature found. /usr/sbin/grub-probe: info: scanning hd0,gpt3 for LVM. /usr/sbin/grub-probe: info: the size of hd0 is 5860533168. /usr/sbin/grub-probe: info: no LVM signature found. /usr/sbin/grub-probe: info: scanning hd0,gpt2 for LVM. /usr/sbin/grub-probe: info: the size of hd0 is 5860533168. /usr/sbin/grub-probe: info: no LVM signature found. /usr/sbin/grub-probe: info: scanning hd0,gpt1 for LVM. /usr/sbin/grub-probe: info: the size of hd0 is 5860533168. /usr/sbin/grub-probe: info: no LVM signature found. /usr/sbin/grub-probe: info: scanning hd1 for LVM. /usr/sbin/grub-probe: info: the size of hd1 is 5860533168. /usr/sbin/grub-probe: info: no LVM signature found. /usr/sbin/grub-probe: info: the size of hd1 is 5860533168. /usr/sbin/grub-probe: info: scanning hd1,gpt5 for LVM. /usr/sbin/grub-probe: info: the size of hd1 is 5860533168. /usr/sbin/grub-probe: info: no LVM signature found. /usr/sbin/grub-probe: info: scanning hd1,gpt4 for LVM. /usr/sbin/grub-probe: info: the size of hd1 is 5860533168. /usr/sbin/grub-probe: info: no LVM signature found. /usr/sbin/grub-probe: info: scanning hd1,gpt3 for LVM. /usr/sbin/grub-probe: info: the size of hd1 is 5860533168. /usr/sbin/grub-probe: info: no LVM signature found. /usr/sbin/grub-probe: info: scanning hd1,gpt2 for LVM. /usr/sbin/grub-probe: info: the size of hd1 is 5860533168. /usr/sbin/grub-probe: info: no LVM signature found. /usr/sbin/grub-probe: info: scanning hd1,gpt1 for LVM. /usr/sbin/grub-probe: info: the size of hd1 is 5860533168. /usr/sbin/grub-probe: info: no LVM signature found. /usr/sbin/grub-probe: info: opening mduuid/e2d33759fdee07e488ff5b2af57f13ed. /usr/sbin/grub-probe: error: unknown filesystem. _______________________________________________ Help-grub mailing list [email protected] https://lists.gnu.org/mailman/listinfo/help-grub
