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Diffstat (limited to 'results/classifier/accel-gemma3:12b/kvm/1502095')
| -rw-r--r-- | results/classifier/accel-gemma3:12b/kvm/1502095 | 39 |
1 files changed, 39 insertions, 0 deletions
diff --git a/results/classifier/accel-gemma3:12b/kvm/1502095 b/results/classifier/accel-gemma3:12b/kvm/1502095 new file mode 100644 index 000000000..956d8e5a3 --- /dev/null +++ b/results/classifier/accel-gemma3:12b/kvm/1502095 @@ -0,0 +1,39 @@ + +Sporadic input / output error — x86-64 linux guest + +** Setup: ** + +→ Host + Qemu version 2.4.0.1 + Linux: 4.1.1 (Debian 8.2, GCC 4.9.2, x86_64) + filesystem ext3 and ext4 + +→ Guests (3 VMs) + architecture x86_64, Linux 3.16.0-4-amd64 (Debian 7.6) + virtual disk qcow2, uncompressed + guests filesystem ext3 + virtual disks size: VM1: 3GB, VM2: 5GB, VM3: 250GB + +→ Network + bridge (br0) and tap interfaces. + + +** Command line ** + +For all 3 VMs, the command line is similar to the following. Only RAM size and ID ("109") are changed. + + /usr/local/bin/qemu-system-x86_64 -hda /media/raid1/qemu-109 -m 8G -smp 4 -enable-kvm \ + -netdev bridge,id=br109 -device virtio-net-pci,netdev=br109,id=nic0,mac=00:00:00:00:01:09 \ + -k it -daemonize + + +** Problem ** + +Sporadic, unexplained input output error. +When I try to SSH to one of the instances, most of the times everything just works fine. Some other times, the SSH connection can be established, but as I interact with the guests via SSH (ls, cd, top) the guest reports "input / output error" on the SSH console. Sometimes, the SSH daemon on the guest answers "/bin/bash input output error". Sometimes the SSH client answers that the connection has been dropped by the host. + +When this happens, the web services I run on the VMs get unreachable, the VMs themselves are unreachable/unusable via SSH as described, and after killing the relative qemu processes and restarting the VMs, no recent logs are registered on /var/logs, arguably since the time of the crash. + +This only happens to one VM at a time, independently. The other VMs appear to run fine when one VM encounters the problem. + +I which instructions to further debug this. \ No newline at end of file |