send_magic_sysrq_to_a_kvm_guest_using_virsh
Send Magic SysRq to a KVM guest using virsh
Использование
virsh send-key guest1 KEY_LEFTALT KEY_SYSRQ KEY_H
Magic SysRq
| Action | QWERTY |
|---|---|
| Set the console log level, which controls the types of kernel messages that are output to the console | 0 through 9 |
| Immediately reboot the system, without unmounting or syncing filesystems | b |
| Perform a system crash. A crashdump will be taken if it is configured. | c |
| Display all currently held Locks (CONFIG_LOCKDEP kernel option is required) | d |
| Send the SIGTERM signal to all processes except init (PID 1) | e |
| Call oom_kill, which kills a process to alleviate an OOM condition | f |
| When using Kernel Mode Setting, provides emergency support for switching back to the kernel's framebuffer console[4] If the in-kernel debugger 'kdb' is present, enter the debugger. | g |
| Output a terse help document to the console Any key which is not bound to a command should also perform this action | h |
| Send the SIGKILL signal to all processes except init | i |
| Forcibly «Just thaw it» – filesystems frozen by the FIFREEZE ioctl. | j |
| Kill all processes on the current virtual console (can kill X and svgalib programs, see below) This was originally designed to imitate a secure attention key | k |
| Shows a stack backtrace for all active CPUs. | l |
| Output current memory information to the console | m |
| Reset the nice level of all high-priority and real-time tasks | n |
| Shut off the system | o |
| Output the current registers and flags to the console | p |
| Display all active high-resolution timers and clock sources. | q |
| Switch the keyboard from raw mode, the mode used by programs such as X11 and svgalib, to XLATE mode | r |
| Sync all mounted filesystems | s |
| Output a list of current tasks and their information to the console | t |
| Remount all mounted filesystems in read-only mode | u |
| Forcefully restores framebuffer console, except for ARM processors, where this key causes ETM buffer dump | v |
| Display list of blocked (D state) tasks | w |
| Used by xmon interface on PPC/PowerPC platforms. | x |
| Show global CPU registers (SPARC-64 specific) | y |
| Dump the ftrace buffer | z |
| Print a summary of available magic SysRq keys | space |
Источники
send_magic_sysrq_to_a_kvm_guest_using_virsh.txt · Последнее изменение: 2016/11/04 00:00 (внешнее изменение)