Bug #5172

Incorrect SIZE on qcow2 images from remote sources

Added by Boris Parak 5 months ago. Updated about 1 month ago.

Status:ClosedStart date:05/29/2017
Priority:NormalDue date:
Assignee:-% Done:

0%

Category:Core & System
Target version:Release 5.4.1
Resolution: Pull request:
Affected Versions:OpenNebula 5.2

Description

When a qcow2 (or any other non-raw image) is downloaded from a remote source, its SIZE is determined from Content-Length. This leads to incorrect SIZE attributes on IMAGEs and breaks resizing. Users are often unknowingly trying to shrink the image (which is not supported by qemu-img).

In `datastore_mad/remotes/libfs.sh`, I can see:

    http://*|https://*)
        HEADERS=`curl -LIk --max-time 60 $1 2>&1`

        if echo "$HEADERS" | grep -i -q "OpenNebula-AppMarket-Size"; then
            # An AppMarket/Marketplace URL
            SIZE=$(echo "$HEADERS" | grep -i "^OpenNebula-AppMarket-Size:" | tail -n1 | cut -d: -f2)
        else
            # Not an AppMarket/Marketplace URL
            SIZE=$(echo "$HEADERS" | grep -i "^Content-Length:" | tail -n1 | cut -d: -f2)
        fi
        error=$?
        ;;

Does this mean that you are using a workaround for OpenNebula Marketplace and setting the correct size without looking at the actual file size?
Are there any plans for getting SIZE after the file is downloaded or, at least, exposing a way to refresh this information later (on registered IMAGEs)?

Associated revisions

Revision 50e74647
Added by Vlastimil Holer about 1 month ago

B #5172: Detect remote image size (#465)

Revision f417cfc3
Added by Vlastimil Holer about 1 month ago

B #5172: Detect remote image size (#465)

(cherry picked from commit 50e74647693e4c471ec131caf163295f031d97fc)

History

#1 Updated by Ruben Diez Lazaro 4 months ago

This bug also affects to our infrastructure. For some users, the system try to shrink the disks images, so the VM fails to be created.

#2 Updated by Ruben S. Montero about 1 month ago

  • Status changed from Pending to Closed
  • Target version set to Release 5.4.1

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