Created
July 16, 2013 16:01
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Command to get some info about stuck qemu instances on SmartOS hosts. mdb magic courtesy of @rmustacc
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| #!/bin/bash | |
| if [[ -z $1 ]]; then | |
| echo Usage: $0 zone-uuid | |
| exit 1 | |
| fi | |
| LOG=/tmp/kvcpu_ringbuf.log.$$ | |
| set -e | |
| ZONE_NAME=$1 | |
| KVM_PID=$(pgrep -z $ZONE_NAME -f qemu-system-x86_64) | |
| KVM_T=$(echo "::walk kvm | ::printf \"0x%x %d\n\" kvm_t . kvm_pid" | mdb -k | nawk -v pid=$KVM_PID '$2 == pid { print $1 }') | |
| KVM_VCPUS=$(echo $KVM_T::print kvm_t vcpus | mdb -k | sed 's/.*\[\ //;s/\ 0,//g;s/...\ \]//;s/,//g') | |
| echo "# pgrep -z $ZONE_NAME -f qemu-system-x86_64" >$LOG | |
| pgrep -z $ZONE_NAME -f qemu-system-x86_64 >>$LOG | |
| echo "" >> $LOG | |
| echo "# echo \"::walk kvm | ::printf \\\"0x%x %d\n\\\" kvm_t . kvm_pid\" | mdb -k" >> $LOG | |
| echo "::walk kvm | ::printf \"0x%x %d\n\" kvm_t . kvm_pid" | mdb -k >> $LOG | |
| echo "" >> $LOG | |
| echo "# echo $KVM_T::print kvm_t vcpus | mdb -k" >> $LOG | |
| echo $KVM_T::print kvm_t vcpus | mdb -k >> $LOG | |
| echo "" >> $LOG | |
| printf "\n# for i in $(echo $KVM_VCPUS | nawk '{ print $1, $2, $3 }') ...\n" >> $LOG | |
| for i in $KVM_VCPUS; do | |
| printf "\n:: $i ::\n" >> $LOG | |
| echo "$i::print kvm_vcpu_t kvcpu_ringbuf | ::walk kvm_ringbuf_entry | ::kvm_ringbuf_entry" | mdb -k >>$LOG | |
| done | |
| echo Output can be found in $LOG. Paste it in \#smartos, mailing list, etc. | |
| echo less $LOG | |
| echo cat $LOG |
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