kexec February 2016

kexec@lists.fedoraproject.org

5 participants
4 discussions

[PATCH RFC] module-setup.sh: install usb serial driver for ttyUSB0
by Dave Young 27 May '16

27 May '16

In case one want to use usb serial console, we need to pack the usb serial driver into kdump initramfs so that one can see the console output on the usb console. I only handled ttyUSB0, this is like a hard code, but it should be enough for most cases. Also only install the driver for the ttyUSB0 device. Tested with adding "console=ttyUSB0" in 2nd kernel commandline. Tested latest F22 kernel, there's CONFIG_USB_SERIAL_CONSOLE=y, kdump work ok. Signed-off-by: Dave Young <dyoung(a)redhat.com> --- dracut-module-setup.sh | 8 ++++++++ 1 file changed, 8 insertions(+) --- kexec-tools.orig/dracut-module-setup.sh +++ kexec-tools/dracut-module-setup.sh @@ -626,4 +626,12 @@ installkernel() { [ "$wdt" = "iTCO_wdt" ] && instmods lpc_ich instmods $wdt fi + + if [ -c /dev/ttyUSB0 ]; then + _majmin=$(get_maj_min /dev/ttyUSB0) + + _driver=$(readlink /sys/dev/char/$_majmin/device/driver) + _driver=$(basename $_driver) + instmods $_driver + fi }

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kdump daemon not starting
by Ronit Halder 31 Mar '16

31 Mar '16

I am installed kdump in fedora 23 in efi (workstation edition). But it isn't starting and systemctl status kdump.service showing (in log.txt) My /boot/grub2/grub.cfg attached below.

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Re: Detecting kdump-lib-initramfs.sh errors
by Dave Young 01 Mar '16

01 Mar '16

Hi, Joe On 02/26/16 at 04:09pm, Joe Lawrence wrote: > Hi Dave, > > Stratus has a question about monitoring various error scenarios out of > kdump-lib-initramfs.sh. > > This file looks to be Red Hat specific (at least it's not in my upstream > kexec-tools git tree), so I wasn't sure where to direct the question. > Feel free to point us in the direction of an appropriate mailing list, > bugzilla, etc. We are using Fedora kexec mailing list as the upstream of kdump scripts. see below page: https://lists.fedoraproject.org/admin/lists/kexec.lists.fedoraproject.org/ > > Basically we're interested in reporting kdump progress over IPMI, > including the mounting / creation of kdump directories, vmcore-dmesg and > vmcore files. > > We could obviously modify kdump-lib-initramfs.sh directly to accomplish > this [1], but we were wondering if there was a cleaner approach -- for > example, functions in kdump-lib-initramfs.sh could return status or log > errors somewhere that we could read later. > > We would gladly prototype and test examples if this is something that > could be reasonably supported. > > [1] https://paste.fedoraproject.org/330114/ The better way is to send patches to kexec(a)lists.fedoraproject.org so that we can review and discuss it. The latest code stays in Fedora kexec git tree, you can clone the tree by: fedpkg clone -a kexec-tools Thanks Dave

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[PATCH 0/2] Load wdt module in kdump kernel if it was active
by Pratyush Anand 24 Feb '16

24 Feb '16

These patches add support to load module in kdump kernel for active watchdog in primary kernel. Patches have been tested with mei_me and iTCO watchdog. Pratyush Anand (2): Watchdog: Load module for only active watchdog in kdump kernel kdumpctl: force rebuild in case of dynamic system modification dracut-module-setup.sh | 19 +++++++++++++------ kdump-lib.sh | 39 +++++++++++++++++++++++++++++++++++++++ kdumpctl | 23 +++++++++++++++++++++++ 3 files changed, 75 insertions(+), 6 deletions(-) -- 2.5.0

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kexec February 2016