diff options
Diffstat (limited to 'results/classifier/deepseek-2-tmp/output/files/1901892')
| -rw-r--r-- | results/classifier/deepseek-2-tmp/output/files/1901892 | 39 |
1 files changed, 0 insertions, 39 deletions
diff --git a/results/classifier/deepseek-2-tmp/output/files/1901892 b/results/classifier/deepseek-2-tmp/output/files/1901892 deleted file mode 100644 index 23802fe8..00000000 --- a/results/classifier/deepseek-2-tmp/output/files/1901892 +++ /dev/null @@ -1,39 +0,0 @@ - -qemu-img create corrupts the qcow2 if the file already exists - -When creating a disk using qemu-img create command, if the destination path of the qcow2 file already exists, it will show the error saying that it cannot get a lock so it exits with exit status 1 but it will corrupt the qcow2 file anyway. - -Steps to reproduce: -1. Have a guest running with a root (vda) and a second device (vdc). -In my case is a clean Ubuntu 16.04 image with kernel 4.4.0-190-generic x86_64 -vdc disk is called testadddisk-3.qcow2 -2. vdc is an xfs over lvm. -pvcreacte /dev/vdc -vgcreate myVg /dev/vdc -lvcreate -l+100%FREE -n myLv myVg -mkfs.xfs /dev/mapper/myVg-myLv -mount /dev/mapper/myVg-myLv /mnt -3. Create disk IO on that device in the guest. -while true ; do dd if=/dev/zero of=/mnt/testfile bs=1024 count=1000 ; sleep 1; done -4. Execute the command to create a new device but use the same name of the device attached: -sudo qemu-img create -f qcow2 testadddisk-3.qcow2 20G -The output of the command is this: -Formatting 'testadddisk-3.qcow2', fmt=qcow2 size=21474836480 cluster_size=65536 lazy_refcounts=off refcount_bits=16 -qemu-img: testadddisk-3.qcow2: Failed to get "write" lock -Is another process using the image? - -The write continues in the guest but when it is shutdown, when it is powered on again you get this: -error: Failed to start domain testadddisk -error: internal error: process exited while connecting to monitor: 2020-10-27T22:00:51.628374Z qemu-system-x86_64: -drive file=/var/lib/vmImages/testadddisk-3.qcow2,format=qcow2,if=none,id=drive-virtio-disk2: Image is not in qcow2 format - -I run the qemu-img create command with an strace and I believe that first it tries to open the file in write mode, then does a truncate on it and after that says it cannot get a lock. The output is in the file attached. As well as the guest xml just in case. - -The host: -Ubuntu 18.04.5 LTS -4.15.0-112-generic x86_64 -qemu packages installed: -ii qemu-block-extra:amd64 1:2.11+dfsg-1ubuntu7.32 amd64 extra block backend modules for qemu-system and qemu-utils -ii qemu-kvm 1:2.11+dfsg-1ubuntu7.31 amd64 QEMU Full virtualization on x86 hardware -ii qemu-system-common 1:2.11+dfsg-1ubuntu7.32 amd64 QEMU full system emulation binaries (common files) -ii qemu-system-x86 1:2.11+dfsg-1ubuntu7.31 amd64 QEMU full system emulation binaries (x86) -ii qemu-utils 1:2.11+dfsg-1ubuntu7.32 amd64 QEMU utilities \ No newline at end of file |