[Beowulf] moving of Linux HDD to other node: udev problem at boot
reuti at staff.uni-marburg.de
Wed Aug 19 15:07:19 EDT 2009
Am 19.08.2009 um 19:12 schrieb Mikhail Kuzminsky:
> As it was discussed here, there are NUMA problems w/Nehalem on a
> set of Linux distributions/kernels. I was informed that may be old
> OpenSuSE 10.3 default kernel (2.6.22) works w/Nehalem OK in the
> sense of NUMA, i.e. gives right /sys/devices/system/node content.
> I moved Western Digital SATA HDD w/SuSE 10.3 installed (on dual
> Barcelona server) to dual Nehalem server (master HDD on Nehalem
> server) with Supermicro X8DTi mobo.
> But loading of SuSE 10.3 on Nehalem server was not successful. Grub
> loader (which menu.lst configuration uses "by-id" identification of
> disk partitions) works OK. But linux kernel booting didn't finish
> successfully: /boot/04-udev.sh script (which task is udev
> initialization) - I think, it's from initrd content - do not see
> root partition (1st partition on HDD) !
> At the boot I see the messages
> SCSI subsystem initialized
> ACPI Exception (processor_core_0787): Processor device isn't present
> <a set of messages about usb>
> Trying manual resume from /dev/sda2 /* it's
> swap partition*/
> resume device /dev/sda2 not found (ignoring)
There might be an entry "append resume=..." either in lilo.conf or
> Waiting for device /dev/disk/by-id/scsi-SATA-WDC_WD<name_of_disk>-
> part1 ... /* echo from udev.sh */
Maybe the disk id is different form the one recored in /etc/fstab.
What about using plain /dev/sda1 or alike, or mounting by volume label?
> and then the proposal to try again. After finish of this script I
> don't see any HDDs in /dev.
> BIOS setting for this SATA device is "enhanced". "compatible" mode
> gives the same result.
> What may be the source of the problem ? May be HDD driver used by
> initrd ?
> Mikhail Kuzminsky
> Computer Assistance to Chemical Research Center
> Zelinsky Institute of Organic Chemistry RAS
> PS. If I see (after finish of udev.sh script) the content of /sys
> - it's right in NUMA sense, i.e.
> /sys/devices/system/node contains normal node0 and node1.
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