Expose virtual size of backing images (backport #2680) #2722
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Waiting for PR longhorn/backing-image-manager#223 merged. |
@shuo-wu longhorn/backing-image-manager#223 has been merged. Please update this PR. |
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Signed-off-by: Tim Serong <tserong@suse.com> (cherry picked from commit ffe9a83) Signed-off-by: Shuo Wu <shuo.wu@suse.com>
This commit adds virtualSize to the BackingImageStatus and BackingImageFileInfo structs, and thus to the BackingImage and BackingImageManager CRDs. We can see how this works in practice by creating a new backing image downloaded from a URL, then periodically running `kubectl -n longhorn-system get lhbi`. I'm using https://download.opensuse.org/distribution/leap/15.5/appliances/openSUSE-Leap-15.5-Minimal-VM.x86_64-Cloud.qcow2 in the example below. Initially, when the download is just started, before the file size is known: ``` > kubectl -n longhorn-system get lhbi/default-image-7mplj NAME UUID SOURCETYPE SIZE VIRTUALSIZE AGE default-image-7mplj 6d5a98b0 download 0 0 9s ``` A little later, while the download is running: ``` > kubectl -n longhorn-system get lhbi/default-image-7mplj NAME UUID SOURCETYPE SIZE VIRTUALSIZE AGE default-image-7mplj 6d5a98b0 download 255701504 0 3m33s ``` Finally, once the download is complete: ``` > kubectl -n longhorn-system get lhbi/default-image-7mplj NAME UUID SOURCETYPE SIZE VIRTUALSIZE AGE default-image-7mplj 6d5a98b0 download 255701504 821035008 4m26s ``` Compare size and virtualSize above with the image downloaded manually: ``` > wget https://download.opensuse.org/distribution/leap/15.5/appliances/openSUSE-Leap-15.5-Minimal-VM.x86_64-Cloud.qcow2 [...] > ls -l openSUSE-Leap-15.5-Minimal-VM.x86_64-Cloud.qcow2 -rw-r--r-- 1 tserong users 255701504 Dec 19 23:26 openSUSE-Leap-15.5-Minimal-VM.x86_64-Cloud.qcow2 > qemu-img info openSUSE-Leap-15.5-Minimal-VM.x86_64-Cloud.qcow2 | grep virtual virtual size: 783 MiB (821035008 bytes) ``` Related issue: longhorn/longhorn#7923 Signed-off-by: Tim Serong <tserong@suse.com> (cherry picked from commit d438e9b)
…atch Doing this means if there's somehow a mismatch between backing image size or virtual size reported by backing image manager vs. what's currently in the backing image resource's status, the error will be made visible in status.diskFileStatusMap.$DISKUUID.message, i.e. the user should be able to can see the problem by running `kubectl -n longhorn-system get lhbi -o yaml`. This is the same logic as is already used in updateStatusWithFileInfo(). The one thing I'm struggling with here is how to inject such a failure into a running system in order to prove that this change works correctly. Signed-off-by: Tim Serong <tserong@suse.com> (cherry picked from commit 6df0510)
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@innobead Updated |
innobead
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Apr 10, 2024
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Which issue(s) this PR fixes:
Issue longhorn/longhorn#7923
What this PR does / why we need it:
This resolves the conflict of PR #2718
Special notes for your reviewer:
Additional documentation or context