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Description of problem: Device mapper block devices do not get created at boot time for the 2 disks connected to my Silicon Image 3112 raid controller (configured for RAID 1). Version-Release number of selected component (if applicable): device-mapper-1.02.13-1.fc6 dmraid-1.0.0.rc13-1.fc6 udev-095-17.fc6 initscripts-8.45.7-1 How reproducible: Always Steps to Reproduce: You have to have a sil 3112 controller with 2 disks configured as a mirror array. 1. Install FC6 on one of the partitions of the mirror, and configure additional partitions to be mounted under /mnt/ (Anaconda properly detects and lets you configure mount points for the mirror) 2. The machine reboots after installation is complete 3. Actual results: - sysinit scripts complain about /dev/mapper/sil_xxxxxxxxxxpy not being available when trying to mount the additional partitions under /mnt - /dev/mapper folder only contains "control" Expected results: - sil_xxxxxxxxxxpy partitions should mount properly - block devices for the array and its partitions should be found under /dev/mapper Additional info: The system succeeds to boot only because the root partition is defined by its label in fstab, and the partition with the appropriate label is found on device sda (the disks are seen as /dev/sda and /dev/sdb and not as the /dev/mapper/sil_xxxxxxxxxxx array). The raid activation process used by Anaconda seems to work properly since it creates the proper /dev/mapper/sil_xxxxxxxpy entries in fstab. The array is correctly found and activated by dmraid: [root@localhost ~]# dmraid -r /dev/sda: sil, "sil_agahbgdeddae", mirror, ok, 488395120 sectors, data@ 0 /dev/sdb: sil, "sil_agahbgdeddae", mirror, ok, 488395120 sectors, data@ 0 ... but the device mapper array did not get created: [root@localhost ~]# dmsetup ls No devices found Where should I start looking at? Which script(s) or program initializes the device mapper array at boot time (probably using a dmsetup create command?)?
Re-assigned to Anaconda: after looking at the init script in initrd, the file was missing the dm create commands. It seems Anaconda did not initialize initrd for my dm array although it got detected correctly during install. init was looking like this: ... echo "Loading dm-snapshot.ko module" insmod /lib/dm-snapshot.ko mkblkdevs resume LABEL=SWAP-sil_agahbg echo Creating root device. mkrootdev -t ext3 -o defaults,ro dm-2 ... instead of: ... echo "Loading dm-snapshot.ko module" insmod /lib/dm-snapshot.ko mkblkdevs rmparts sdb rmparts sda dm create sil_ahacbgbifbca 0 488395120 mirror core 2 131072 nosync 2 8:0 0 8:16$ dm partadd sil_ahacbgbifbca resume LABEL=SWAP-sil_agahbg echo Creating root device. mkrootdev -t ext3 -o defaults,ro dm-2 ... Going to rescue mode, chrooting and upgrading to the latest kernel with yum circumvented the issue, since initrd got re-generated as part of the upgrade. But well, it should definitely have worked in the first place.
Got fixed somewhen between fc6 and fc8