We got into a situation where we have 1200Gb out of 916Gb allocated and the disk filled up, crashing most of the servers on the box. We want to stop this from happening and unfort upgrading the person who over allocated's brain is not an option!
I just want to disable sparse files as the space left reported in proxmox isn't the allocated space but the used space and as soon as the disk fills up windows crashes
That is not true for Virtual Environment 5.1-51, trying to fix this, using https://unix.stackexchange.com/questions/169669/converting-sparse-file-to-non-sparse-in-place as workaround. This will copy whole disk to non sparse file, but create such high load on disk, that it will likely kill other vms running on same hdd. For 1TB dis you need to expect down time for several hours.
@sinaamos You have my compassion. I could not solve this. It's annoying to see all vm down when one vm take too much space. There is partial solution. You can create vm and then move the disk to another location. It seems that copy operation will occupy all space. I don't thin proxmox cares, so this is only solution I know so far.
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