------- Comment From sathe...@in.ibm.com 2016-02-18 03:18 EDT------- Provided 3.19.0-50-generic linux kernel image is not bootable in my machine, as it does not have the ipr module in initramfs, hence failing to find the root disk.
Steps: 1. Installed 3.19.0-50-generic kernel 2. reboot, choose the above kernel/ kexec to the above kernel ----> both result in below error Begin: Mounting root file system ... Begin: Running /scripts/local-top ... done. Gave up waiting for root device. Common problems: - Boot args (cat /proc/cmdline) - Check rootdelay= (did the system wait long enough?) - Check root= (did the system wait for the right device?) - Missing modules (cat /proc/modules; ls /dev) ALERT! /dev/disk/by-uuid/1e999814-80ae-4ef9-89a0-c7fda8d968c5 does not exist. Dropping to a shell! BusyBox v1.21.1 (Ubuntu 1:1.21.0-1ubuntu1) built-in shell (ash) Enter 'help' for a list of built-in commands. (initramfs) 3. Tried boot back to 4.2 kernel, it is working fine 4. extracted and compared the initramfs content and found 4.2 kernel has ipr in modules.dep whereas 3.19.0-50-generic does not have. Pls provide updated kernel image to proceed with tests. Thanks inadvance. output of extracted initramfs ???? # grep -r ipr 4.2/* Binary file 4.2/bin/busybox matches Binary file 4.2/initrd.img-4.2.0-27-generic matches Binary file 4.2/initrd.img-4.2.0-27-generic.bk matches Binary file 4.2/lib/powerpc64le-linux-gnu/libtinfo.so.5 matches Binary file 4.2/lib/powerpc64le-linux-gnu/libc.so.6 matches 4.2/lib/modules/4.2.0-27-generic/modules.dep:kernel/drivers/scsi/ipr.ko: Binary file 4.2/lib/modules/4.2.0-27-generic/modules.dep.bin matches 4.2/lib/modules/4.2.0-27-generic/modules.alias:alias pci:v00001014d0000034Asv00001014sd000004C9bc*sc*i* ipr ... 4.2/lib/modules/4.2.0-27-generic/modules.alias:alias pci:v00001069d0000B166sv00001014sd00000266bc*sc*i* ipr Binary file 4.2/lib/modules/4.2.0-27-generic/kernel/drivers/scsi/megaraid/megaraid_sas.ko matches Binary file 4.2/lib/modules/4.2.0-27-generic/kernel/drivers/scsi/libsas/libsas.ko matches Binary file 4.2/lib/modules/4.2.0-27-generic/kernel/drivers/scsi/ipr.ko matches Binary file 4.2/lib/modules/4.2.0-27-generic/kernel/drivers/net/ethernet/jme.ko matches 4.2/lib/modules/4.2.0-27-generic/modules.order:kernel/drivers/scsi/ipr.ko 4.2/lib/modules/4.2.0-27-generic/modules.order:kernel/drivers/mtd/chips/chipreg.ko 4.2/lib/modules/4.2.0-27-generic/modules.order:kernel/net/netfilter/xt_iprange.ko Binary file 4.2/lib/modules/4.2.0-27-generic/modules.alias.bin matches ????? # grep -r ipr 3.19/* Binary file 3.19/bin/busybox matches Binary file 3.19/initrd.img-3.19.0-50-generic matches Binary file 3.19/lib/powerpc64le-linux-gnu/libtinfo.so.5 matches Binary file 3.19/lib/powerpc64le-linux-gnu/libc.so.6 matches Binary file 3.19/lib/modules/3.19.0-50-generic/kernel/drivers/scsi/libsas/libsas.ko matches 3.19/lib/modules/3.19.0-50-generic/modules.order:kernel/drivers/scsi/ipr.ko 3.19/lib/modules/3.19.0-50-generic/modules.order:kernel/drivers/mtd/chips/chipreg.ko 3.19/lib/modules/3.19.0-50-generic/modules.order:kernel/net/netfilter/xt_iprange.ko #lsscsi ... [1:2:0:0] disk IBM IPR-0 5EC29900 /dev/sdc [1:2:1:0] disk IBM IPR-0 5EC2A800 /dev/sdd Regards, -Satheesh. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1481357 Title: [LTCTest][Kernel][OP810]Ubuntu14.04.3: kernel call trace while continuously switching between smt on/off and changing subcores To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1481357/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
