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LIN6-9887 : bdb process failed to exit after disconnect

Created: May 13, 2015    Updated: Dec 3, 2018
Resolved Date: Jul 5, 2015
Found In Version:
Fix Version:
Severity: Standard
Applicable for: Wind River Linux 6
Component/s: Userspace


Customer find a nbd problem in kvm project, the nbd process can not exit nomrally after disconnect

Steps to Reproduce

This issue can be found in qemu env with RCPL19
1, config project with:
configure --enable-board=intel-x86-64 --enable-kernel=standard+features/kvm/qemu-kvm-enable.scc --enable-rootfs=glibc_small --with-layer=wr-qat,wr-dpdk --with-template=feature/initramfs,feature/kvm,feature/build_libc --enable-parallel-pkgbuilds=4 --enable-jobs=4 --with-rcpl-version=0001 --enable-reconfig

2, build project and do nbd operation in qemu target
$ make start-target
# modprobe nbd max_part=8
# qemu-img create -f qcow2 test.img 10G
# qemu-nbd -c /dev/nbd0 test.img
# qemu-nbd -d /dev/nbd0

3, then via `ps -ef` command, we will see "qemu-nbd -c /dev/nbd0" process is still there.

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