I am aware with Gparted we can expand size of the data but is possible to shrink the Data size to make backup on different size micro SD with smaller size by ex?
Different Micro sd size
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- OMV 4.x
- Nefertiti
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Just wondering how to do this since if I have 16GB SD and if I want to create a backup on 32 GB with disk32 disk imager I cannot reuse the smaller size since the system expand into the all unused area as soon I will use the bigger SD.
is there a solution? -
OMV doesn't expand the rootfs to fill the available space. Only to 7-8GB. So it should work perfectly to restore the rootfs from a 32GB card to a 16GB card or the other way around, if you don't manually resize the rootfs. I do this, and it works fine.
Just make sure to use a tool that doesn't image the whole card, but only the actual partitions.
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OMV doesn't expand the rootfs to fill the available space. Only to 7-8GB. So it should work perfectly to restore the rootfs from a 32GB card to a 16GB card or the other way around, if you don't manually resize the rootfs. I do this, and it works fine.
Just make sure to use a tool that doesn't image the whole card, but only the actual partitions.
Actually i got a deal on much bigger size A2 card! so what tool would you recommend since I think but not sure Win32 Disk Imager wont do that even if we check mark: "Read only Allocated partition"?
Actually got an other question in relation to the subject: how to make a system drive back up directly from OMV, I believe clonezilla is not compatible with ARM board?
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Read only allocated partition should do it. But I don't use Windows, so I can't test it.
I remove the SD card and use a Linux Laptop with a SD card reader to back it up.
I use a script, and dd and partclone. It only copies the partitions. There are other tools that do the same.
I agree it would have been great if you could backup/restore the rootfs from OMV.
See: New to OMV and Linux
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