On Wed, 2012-04-18 at 18:28 -0400, Vivek Goyal wrote: > Hi, > > I am trying to dump kernel vmcore to an software iscsi target (kdump). > kdump specifies the dump destination using "--mount" option. But dracut > does not even include the "iscsi" module and associated device is not > mounted in second kernel. > > Following is the dracut command line as called by /sbin/mkdumprd. > > dracut -m kdumpbase --add dash --add fstab-sys --add kernel-modules -c /dev/null -I /sbin/makedumpfile --mount '/dev/mapper/vg-lv_root / ext4 rw,seclabel,relatime,user_xattr,barrier=1,data=ordered' --mount '/dev/mapper/mpatha /mnt/common ext4 rw,seclabel,relatime,user_xattr,barrier=1,stripe=16,data=ordered' -M -f /boot/initramfs-3.3.2-1.fc17.x86_64kdump.img 3.3.2-1.fc17.x86_64 > > Note there is a multipath target over iscsi devices and that target is > mounted on /mnt/common. Hence specified using "--mount /dev/mapper/mpatha > /mnt/common" > > Following is list of modules being included by dracut (printed on standard > output due to -M option). > > rpmversion > dm > kernel-modules > lvm > multipath > fstab-sys > rootfs-block > udev-rules > base > fs-lib > kdumpbase > shutdown > > I thought that once you specify a mount using "--mount" option, dracut > will traverse through the full device stack, figure out all the > dependencies, include all the modules and bring up the full stack in > the kernel and mount the top level device. Is that not the case? > > BTW, I have done testing with multipath targets (without iscsi) and > it works. So multipath is not the issue. But iscsi is. I think this is a bug, dracut fails to detect iscsi thus doesn't include the iscsi module. Vivek, can you try to add 'set -x' in the check() function in module-setup.sh of iscsi module to get some debugging info? Especially is_iscsi(). Thanks for testing! -- To unsubscribe from this list: send the line "unsubscribe initramfs" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
