2.6.15 does not boot -- who creates RAID devices?
I can't boot 2.6.15; the problem is rather straightforward, but I'd like a quick reality check from this list.
In 2.6.14, the device /dev/md/1 is started directly from the /init script inside initrd.img using mdadm and UUIDs, using info that it garners during LILO.
In 2.6.15, a script in /scripts/local-top/md calls /sbin/mdrun. mdrun script explicitly uses mknod to create md devices 0 through 24, and then calls mdadm to start these devices if they exist. Unfortunately, through an error that I haven't yet uncovered, it starts the components that I use for /dev/md/1 as /dev/md/0, my /dev/md/2 as /dev/md/1, etc. In turn, this conflicts with /etc/fstab, my file system is never mounted, and the boot stalls. (If anyone is interested, the script is part of the initramfs tools and can be found, in the Debian distribution, in /usr/share/initramfs-tools/scripts/local-top/md.)
Now, as far as I can tell from reading /etc/udev/compat-full.rules, the role of udev is strictly post-device creation; it has no role, even in theory, of starting these devices; udev just creates a symlink when it finds out that some other script creates the md device.
Or am I missing something that udev does? I'm particularly perplexed because the "mdrun" script has been around since 2003, and now it's suddenly assembling devices in funny way; udev is more in flux. On the other hand, 2.6.15 boots in a new way, and I suspect that's the culprit.
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Moshe Yudkowsky work: http://www.Disaggregate.com book: http://www.PebbleAndAvalanche.com ------------------------------------------------------- This SF.net email is sponsored by: Splunk Inc. Do you grep through log files for problems? Stop! Download the new AJAX search engine that makes searching your log files as easy as surfing the web. DOWNLOAD SPLUNK! http://sel.as-us.falkag.net/sel?cmd=lnk&kid3432&bid#0486&dat1642 _______________________________________________ Linux-hotplug-devel mailing list http://linux-hotplug.sourceforge.net [email protected] https://lists.sourceforge.net/lists/listinfo/linux-hotplug-devel