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# longhorn-storagea
adamant-kite-43734
12/20/2023, 12:10 PMThis message was deleted.
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late-needle-80860
12/21/2023, 10:42 AMf
famous-journalist-11332
12/21/2023, 11:37 PMThanks @late-needle-80860!
Yes, the doc above will explain the different between the filesystem size VS actual size of Longhorn block device
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bright-wall-24452
12/22/2023, 2:10 AM@late-needle-80860 If I want to trim the volume of the harvester. How can I do what ?
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late-needle-80860
12/22/2023, 6:37 AMIf you searched the Longhorn docs on e.g. https://longhorn.io/docs/1.5.3/ then you would find https://longhorn.io/docs/1.5.3/volumes-and-nodes/trim-filesystem/#trim-the-filesystem-in-a-longhorn-volume - read that
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bright-wall-24452
12/22/2023, 6:47 AMThank you for your reply. I will have a try! But I think the docs is about the volume of the file system's mode, not block's mode.
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late-needle-80860
12/22/2023, 9:26 AMAs far as I can see the docs I linked to says nothing about the volume mode. Try it out. Ensure you’re on test so that you don’t potentially corrupt production data.
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bright-wall-24452
12/26/2023, 3:28 AM@late-needle-80860 Hi! I had a try to trim the volume with block mode. But I failed. The volume mounted the host unsuccessfully.
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late-needle-80860
12/26/2023, 8:17 PMProvide errors, logs and so on ….
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bright-wall-24452
12/27/2023, 2:11 AM@late-needle-80860 Longhorn Fronted could tell you this volume has no a mounted point. If you want to mount this volume to the host. you would get errors as follows:
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famous-journalist-11332
12/27/2023, 2:33 AMHey. The block volume used as a disk in Harvester VM need to be trim by ssh into the VM an run the fstrim command
famous-journalist-11332
12/27/2023, 2:34 AMcc @famous-shampoo-18483 @billowy-painting-56466
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bright-wall-24452
12/27/2023, 2:38 AM@famous-journalist-11332 Thank you for your reply. The block volume is not mounted to the VM. It is booted by virt-launcher pod. I tried to trim in virt-launch pod. Finally. I didn't found the volume mounted point.
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famous-journalist-11332
12/27/2023, 2:39 AMCould you provide the yaml of virt-launcher pod?
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bright-wall-24452
12/27/2023, 2:50 AM@famous-journalist-11332
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