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Diffstat (limited to 'results/classifier/accel-gemma3:12b/kvm/1882241')
| -rw-r--r-- | results/classifier/accel-gemma3:12b/kvm/1882241 | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/results/classifier/accel-gemma3:12b/kvm/1882241 b/results/classifier/accel-gemma3:12b/kvm/1882241 new file mode 100644 index 000000000..56a607ec5 --- /dev/null +++ b/results/classifier/accel-gemma3:12b/kvm/1882241 @@ -0,0 +1,21 @@ + +file transfer over cifs to 64bit guest corrupts large files + +qemu 4.0 compiled fom source. +vm called by +qemu-system-x86_64 -cpu qemu64 -smp 4 -m 4G -drive file=/data/images/slack14.2_64bit_test.qcow2,format=qcow2 -cdrom /mnt/smb1/slackware/iso/slackware64-14.2-install-dvd.iso -boot c -net nic,macaddr=02:00:00:11:11:17,model=i82551 -net bridge,br=br0 -enable-kvm -k en-gb -display vnc=:3 -monitor telnet:localhost:7103,server,nowait,nodelay + +copying large files eg 2.4gb or reading them on a cifs mount in the guest causes corruption every time. For smaller files 40-60mb corruption is more than 50% of the time. tested by md5sum on cifs server, or on host machine vs. on guest vm. +corruption is seen only with 64bit guest using cifs with i82551 emulated network device +ie. 32bit guest using cifs with i82551 emulated network device gives no corruption. + +changing the emulated device to vmxnet3 removes the data corruption (see below) + +qemu-system-x86_64 -cpu qemu64 -smp 4 -m 4G -drive file=/data/images/slack14.2_64bit_test.qcow2,format=qcow2 -cdrom /mnt/smb1/slackware/iso/slackware64-14.2-install-dvd.iso -boot c -net nic,macaddr=02:00:00:11:11:17,model=vmxnet3 -net bridge,br=br0 -enable-kvm -k en-gb -display vnc=:3 -monitor telnet:localhost:7103,server,nowait,nodelay + +this corruption is repeatable. ie. I created new vm, call using top example, installed 64bit linux, mounted cifs share and copied 2.4gb file to /tmp then run md5sum "filecopied" +the md5sum is different every time. copy same file to the host, or to a 32bit guest with the same virtual network device and bridge and md5sums are correct. The host pysical network adapter is +lspci|grep Ether +1e:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller (rev 11) + +physically connected via gigabit ethernet to cifs server (via gigabit switch) \ No newline at end of file |