On Monday 02 April 2007 18:33, Peter Nuttall wrote: > D-I questions: I just pressed enter at the prompt, and set my keyboard > and location to enGB. On reaching the disk stage, I asked it to set up > hda as a LVM with / /home /tmp and /var on seperate paritions. On > checking the result seemed to suggest no changes to /dev/sda or > /dev/sdb. I have attached syslog and partman from /var/log/installer. I have tried to reproduce this issue in vmware, but so far have been unable to do so. - started with clean system with 1 IDE and 2 SCSI disks - installed Etch with /home on RAID1 as only filesystem on SCSI disks - copied /usr/share/doc into $HOME I then rebooted the system cleanly and did another install; this did not reproduce the os-prober messages. After that install there were no problems: installing mdadm made the RAID available without any problems. I then did a forced shut down the system so that the file systems would not be marked clean. This did reproduce the messages during a new install while os-prober was run (same for both partitions): os-prober: debug: running /usr/lib/os-probes/50mounted-tests on /dev/discs/disc1/part1 kernel: EXT2-fs: sda1: couldn't mount because of unsupported optional features (4). kernel: EXT3-fs: INFO: recovery required on readonly filesystem. kernel: EXT3-fs: write access will be enabled during recovery. kernel: kjournald starting. Commit interval 5 seconds kernel: EXT3-fs: recovery complete. kernel: EXT3-fs: mounted filesystem with ordered data mode. 50mounted-tests: debug: mounted as ext3 filesystem [...] os-prober: debug: running /usr/lib/os-probes/50mounted-tests on /dev/discs/disc1/part1 kernel: EXT2-fs warning (device sda1): ext2_fill_super: mounting ext3 filesystem as ext2 50mounted-tests: debug: mounted as ext2 filesystem After the reboot I again installed mdadm. However, I could not reproduce any problems during this: the RAID was not out of sync, was assembled normally and after mounting it all data was there. My conclusion is that by itself the fact that os-prober mounts the partitions that make up a RAID1 does not damage anything, even if they were not unmounted cleanly before. The real question here seems to be: why were the partitions unclean before the installation was started.
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