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+virtual: 0.789
+performance: 0.581
+user-level: 0.528
+device: 0.499
+debug: 0.478
+graphic: 0.466
+architecture: 0.461
+PID: 0.426
+permissions: 0.424
+ppc: 0.423
+vnc: 0.411
+files: 0.405
+mistranslation: 0.402
+semantic: 0.373
+hypervisor: 0.371
+network: 0.350
+register: 0.321
+boot: 0.315
+x86: 0.296
+i386: 0.295
+socket: 0.293
+VMM: 0.275
+kernel: 0.267
+peripherals: 0.211
+risc-v: 0.206
+assembly: 0.198
+TCG: 0.173
+arm: 0.160
+KVM: 0.109
+
+qemu-nbd crash during using with chroot
+
+I use qemu-nbd to mount my image. And after some times, qemu-nbd crashes and so the chroot freeze.
+
+ps aux | grep qemu :
+root      2223  0.0  0.0   9776   548 ?        Ss   18:03   0:00 qemu-nbd --connect=/dev/nbd0 /chroots/test/virtual.img
+root      2224  0.0  0.0  10800   544 ?        D    18:03   0:00 qemu-nbd --connect=/dev/nbd0 /chroots/test/virtual.img
+root      2227  0.0  0.0      0     0 ?        Z    18:03   0:00 [qemu-nbd] <defunct>
+root      2357  0.0  0.0   5212   768 pts/0    D+   18:07   0:00 grep qemu
+
+mount :
+/dev/nbd0p1 on /chroots/test/amd64 type ext3 (rw,errors=remount-ro,commit=0)
+/dev on /chroots/test/amd64/dev type devtmpfs (rw,mode=0755)
+/dev/pts on /chroots/test/amd64/dev/pts type devpts (rw,noexec,nosuid,gid=5,mode=0620)
+/proc on /chroots/test/amd64/proc type proc (rw)
+/sys on /chroots/test/amd64/sys type sysfs (rw,noexec,nosuid,nodev)
+
+
+
+After reboot and mount the image, qemu-nbd crashes directly.
+
+Please provide some gdb backtrace from the failing qemu-nbd process, ie, show the root cause of the problem instead of showing multiple symptoms.
+
+Run qemu-nbd under gdb and when it crashes, run "bt" command.  Before doing so, ensure you've debugging symbols for your qemu-nbd binary.
+
+And the most important part - what's the format of the image you're running qemu-nbd against, and what version of qemu-nbd you're using?
+
+Without all this, your bugreport is useless.
+
+Thanks.
+
+Ok i try to get the informations
+
+[Expired for QEMU because there has been no activity for 60 days.]
+