All, I finally found the problem: Xubuntu install irqbalance by default (Gentoo doesn't) which cause problem to my Gigabyte motherboard. Un-installing it brought my system back to its pre-Xubuntu stability. Thanks to all who answered my message! Charles On Thu, Jan 20, 2011 at 9:56 PM, Charles Nadeau <charles [ dot ] nadeau [ at ] gmail [ dot ] com>wrote: > Brenda, > > After poking around and Googling, I *think* the problem is due to the way > the Ubuntu shuts down the RAID array ( > http://www.linuxquestions.org/questions/debian-26/disk-might-not-be-spun-down-properly-update-shutdown-utility-583307/#post2926448). > I am trying various ideas and will report to the list latter this week. > Thanks! > > Charles > > > On Tue, Jan 18, 2011 at 10:00 PM, Brenda J. Butler <bjb [ at ] linuxbutler [ dot ] ca>wrote: > >> >> Strange that the udev rules aren't working ... >> >> One approach is to debug that. Make sure no statements are causing >> the udev rules you show below to be skipped, and/or move them earlier in >> the sequence of udev rules (to help with finding what's causing them >> to be skipped - if that is what's happening). >> >> Another approach is to use volume names. I don't know offhand how >> to do that or I'd give some pointers right here. My guess is >> you give volume names to the disks (they get written on the disks), >> then use the volume names to mount the drives rather than the >> device names. >> >> bjb >> >> >> On Tue, Jan 18, 2011 at 05:50:58PM -0500, Charles Nadeau wrote: >> > Hi, >> > >> > I had to reinstall linux over the week-end and made the switch from >> Gentoo >> > to Xubuntu 10.10. >> > Since then, everytime the computer reboot,s the order of the drives >> changes >> > making the use of my RAID array very difficult. >> > I tried writing udev rules but they are not followed on boot. >> > >> > charles@ottawa:/etc/udev/rules.d$ cat 80-local.rules >> > SUBSYSTEM=="block", ATTR{ID_SERIAL}=="ST3750640AS_5QD0ZEL6", NAME="sda" >> > SUBSYSTEM=="block", ATTR{ID_SERIAL}=="ST3750330AS_3QK0A55K", NAME="sdb" >> > SUBSYSTEM=="block", ATTR{ID_SERIAL}=="ST3750640AS_3QD1BKH4", NAME="sdc" >> > SUBSYSTEM=="block", ATTR{ID_SERIAL}=="ST3750330AS_3QK08ZAR", NAME="sdd" >> > SUBSYSTEM=="block", ATTR{ID_SERIAL}=="ST31000528AS_6VP053RH", NAME="sde" >> > SUBSYSTEM=="block", ATTR{ID_SERIAL}=="ST3320620AS_6QF1A82N", NAME="sdf" >> > SUBSYSTEM=="block", ATTR{ID_SERIAL}=="ST3750640AS_5QD10GFJ", NAME="sdg" >> > SUBSYSTEM=="block", ATTR{ID_SERIAL}=="ST3750640AS_5QD0ZMT2", NAME="sdh" >> > SUBSYSTEM=="block", ATTR{ID_SERIAL}=="ST3750640AS_5QD0VDLG", NAME="sdi" >> > SUBSYSTEM=="block", ATTR{ID_SERIAL}=="ST3750640AS_3QD0AF55", NAME="sdj" >> > >> > What else can I try? >> > Thanks! >> > >> > Charles >> > >> > -- >> > Charles Nadeau Ph.D. >> > http://charlesnadeau.blogspot.com/ >> > _______________________________________________ >> > Linux mailing list >> > Linux [ at ] lists [ dot ] oclug [ dot ] on [ dot ] ca >> > http://oclug.on.ca/mailman/listinfo/linux >> ---end quoted text--- >> > > > > -- > Charles Nadeau Ph.D. > http://charlesnadeau.blogspot.com/ > -- Charles Nadeau Ph.D. http://charlesnadeau.blogspot.com/