[Qemu-devel] [Bug 1269606] Re: curl driver (http) always says "No such file or directory"

[jamiedo2nn]

** Description changed:

  I have a remote server, on which an http disk image definitely exists.
  However the qemu curl block driver cannot open it.  It always gives the
  bogus error:
  
  CURL: Error opening file: Connection time-out
  qemu-system-x86_64: -drive 
file=http://onuma/scratch/cirros-0.3.1-x86_64-disk.img,snapshot=on,cache=writeback,id=hd0,if=none:
 could not open disk image http://onuma/scratch/cirros-0.3.1-x86_64-disk.img: 
Could not open backing file: Could not open 
'http://onuma/scratch/cirros-0.3.1-x86_64-disk.img': No such file or directory
  
  On the server, I can see from the logs that qemu/curl is opening it:
  
  192.168.0.175 - - [15/Jan/2014:21:25:37 +0000] "HEAD 
/scratch/cirros-0.3.1-x86_64-disk.img HTTP/1.1" 200 - "-" "-"
  192.168.0.175 - - [15/Jan/2014:21:25:37 +0000] "GET 
/scratch/cirros-0.3.1-x86_64-disk.img HTTP/1.1" 206 264192 "-" "-"
  
  I am using qemu & curl from git today.
  
  curl: curl-7_34_0-177-gc7a76bb
  qemu: for-anthony-839-g1cf892c
  
  Here is the full command I am using:
  
- http_proxy= \
- LD_LIBRARY_PATH=/home/rjones/d/curl/lib/.libs \
- LIBGUESTFS_BACKEND=direct \
- LIBGUESTFS_HV=/home/rjones/d/qemu/x86_64-softmmu/qemu-system-x86_64 \
- guestfish -v --ro -a http://onuma/scratch/cirros-0.3.1-x86_64-disk.img run
- 
- The full output (includes qemu command itself) is:
- 
- libguestfs: launch: program=guestfish
- libguestfs: launch: version=1.25.20fedora=21,release=1.fc21,libvirt
- libguestfs: launch: backend registered: unix
- libguestfs: launch: backend registered: uml
- libguestfs: launch: backend registered: libvirt
- libguestfs: launch: backend registered: direct
- libguestfs: launch: backend=direct
- libguestfs: launch: tmpdir=/tmp/libguestfsoQctgE
- libguestfs: launch: umask=0002
- libguestfs: launch: euid=1000
- libguestfs: command: run: /usr/bin/supermin-helper
- libguestfs: command: run: \ --verbose
- libguestfs: command: run: \ -f checksum
- libguestfs: command: run: \ --host-cpu x86_64
- libguestfs: command: run: \ /usr/lib64/guestfs/supermin.d
- supermin helper [00000ms] whitelist = (not specified)
- supermin helper [00000ms] host_cpu = x86_64
- supermin helper [00000ms] dtb_wildcard = (not specified)
- supermin helper [00000ms] inputs:
- supermin helper [00000ms] inputs[0] = /usr/lib64/guestfs/supermin.d
- supermin helper [00000ms] outputs:
- supermin helper [00000ms] kernel = (none)
- supermin helper [00000ms] dtb = (none)
- supermin helper [00000ms] initrd = (none)
- supermin helper [00000ms] appliance = (none)
- checking modpath /lib/modules/3.12.5-302.fc20.x86_64 is a directory
- checking modpath /lib/modules/3.11.9-200.fc19.x86_64 is a directory
- checking modpath /lib/modules/3.11.10-200.fc19.x86_64 is a directory
- checking modpath /lib/modules/3.11.4-201.fc19.x86_64 is a directory
- picked kernel vmlinuz-3.12.5-302.fc20.x86_64
- supermin helper [00000ms] finished creating kernel
- supermin helper [00000ms] visiting /usr/lib64/guestfs/supermin.d
- supermin helper [00000ms] visiting /usr/lib64/guestfs/supermin.d/base.img.gz
- supermin helper [00000ms] visiting /usr/lib64/guestfs/supermin.d/daemon.img.gz
- supermin helper [00000ms] visiting /usr/lib64/guestfs/supermin.d/hostfiles
- supermin helper [00041ms] visiting /usr/lib64/guestfs/supermin.d/init.img
- supermin helper [00041ms] visiting 
/usr/lib64/guestfs/supermin.d/udev-rules.img
- supermin helper [00041ms] adding kernel modules
- supermin helper [00064ms] finished creating appliance
- libguestfs: checksum of existing appliance: 
2017df18eaeee7c45b87139c9bd80be2216d655a1513322c47f58a7a3668cd1f
- libguestfs: [00066ms] begin testing qemu features
- libguestfs: command: run: 
/home/rjones/d/qemu/x86_64-softmmu/qemu-system-x86_64
- libguestfs: command: run: \ -display none
- libguestfs: command: run: \ -help
- libguestfs: command: run: 
/home/rjones/d/qemu/x86_64-softmmu/qemu-system-x86_64
- libguestfs: command: run: \ -display none
- libguestfs: command: run: \ -version
- libguestfs: qemu version 1.7
- libguestfs: command: run: 
/home/rjones/d/qemu/x86_64-softmmu/qemu-system-x86_64
- libguestfs: command: run: \ -display none
- libguestfs: command: run: \ -machine accel=kvm:tcg
- libguestfs: command: run: \ -device ?
- libguestfs: [00127ms] finished testing qemu features
- [00128ms] /home/rjones/d/qemu/x86_64-softmmu/qemu-system-x86_64 \
-     -global virtio-blk-pci.scsi=off \
-     -nodefconfig \
-     -enable-fips \
-     -nodefaults \
-     -display none \
-     -machine accel=kvm:tcg \
-     -cpu host,+kvmclock \
-     -m 500 \
-     -no-reboot \
-     -no-hpet \
-     -kernel /var/tmp/.guestfs-1000/kernel.19645 \
-     -initrd /var/tmp/.guestfs-1000/initrd.19645 \
-     -device virtio-scsi-pci,id=scsi \
-     -drive 
file=http://onuma/scratch/cirros-0.3.1-x86_64-disk.img,snapshot=on,cache=writeback,id=hd0,if=none
 \
-     -device scsi-hd,drive=hd0 \
-     -drive 
file=/var/tmp/.guestfs-1000/root.19645,snapshot=on,id=appliance,cache=unsafe,if=none
 \
-     -device scsi-hd,drive=appliance \
-     -device virtio-serial-pci \
-     -serial stdio \
-     -device sga \
-     -chardev socket,path=/tmp/libguestfsoQctgE/guestfsd.sock,id=channel0 \
-     -device virtserialport,chardev=channel0,name=org.libguestfs.channel.0 \
-     -append 'panic=1 console=ttyS0 udevtimeout=600 no_timer_check acpi=off 
printk.time=1 cgroup_disable=memory root=/dev/sdb selinux=0 guestfs_verbose=1 
TERM=xterm-256color'
- CURL: Error opening file: Connection time-out
- qemu-system-x86_64: -drive 
file=http://onuma/scratch/cirros-0.3.1-x86_64-disk.img,snapshot=on,cache=writeback,id=hd0,if=none:
 could not open disk image http://onuma/scratch/cirros-0.3.1-x86_64-disk.img: 
Could not open image: Invalid argument
- libguestfs: error: appliance closed the connection unexpectedly, see earlier 
error messages
- libguestfs: child_cleanup: 0x7f07bf6599b0: child process died
- libguestfs: sending SIGTERM to process 19654
- libguestfs: error: /home/rjones/d/qemu/x86_64-softmmu/qemu-system-x86_64 
exited with error status 1, see debug messages above
- libguestfs: error: guestfs_launch failed, see earlier error messages
- libguestfs: closing guestfs handle 0x7f07bf6599b0 (state 0)
- libguestfs: command: run: rm
- libguestfs: command: run: \ -rf /tmp/libguestfsoQctgE
+ 0622001a98105b80ecfad39dbf0b84c0ed71e12bb603a81a2b9b52e19ca7ae80E

** Summary changed:

- curl driver (http) always says "No such file or directory"
+ curl driver (https) always says "No such file or directory"

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https://bugs.launchpad.net/bugs/1269606

Title:
  curl driver (https) always says "No such file or directory"

Status in QEMU:
  New

Bug description:
  I have a remote server, on which an http disk image definitely exists.
  However the qemu curl block driver cannot open it.  It always gives
  the bogus error:

  CURL: Error opening file: Connection time-out
  qemu-system-x86_64: -drive 
file=http://onuma/scratch/cirros-0.3.1-x86_64-disk.img,snapshot=on,cache=writeback,id=hd0,if=none:
 could not open disk image http://onuma/scratch/cirros-0.3.1-x86_64-disk.img: 
Could not open backing file: Could not open 
'http://onuma/scratch/cirros-0.3.1-x86_64-disk.img': No such file or directory

  On the server, I can see from the logs that qemu/curl is opening it:

  192.168.0.175 - - [15/Jan/2014:21:25:37 +0000] "HEAD 
/scratch/cirros-0.3.1-x86_64-disk.img HTTP/1.1" 200 - "-" "-"
  192.168.0.175 - - [15/Jan/2014:21:25:37 +0000] "GET 
/scratch/cirros-0.3.1-x86_64-disk.img HTTP/1.1" 206 264192 "-" "-"

  I am using qemu & curl from git today.

  curl: curl-7_34_0-177-gc7a76bb
  qemu: for-anthony-839-g1cf892c

  Here is the full command I am using:

  0622001a98105b80ecfad39dbf0b84c0ed71e12bb603a81a2b9b52e19ca7ae80E

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