Re: [pve-devel] [PATCH storage] Revert "workaround zfs create -V error for unaligned sizes"

[Aaron Lauterer <a.lauterer@proxmox.com>]

On 6/14/23 13:38, Thomas Lamprecht wrote:
> Am 14/06/2023 um 13:28 schrieb Aaron Lauterer:
>> This reverts commit cdef3abb25984c369571626b38f97f92a0a2fd15.
>>
>> The bug should be fixed by now [0]. The reproducer doesn't cause any
>> issues in my tests.
>>
>> [0] https://github.com/openzfs/zfs/issues/8541
> 
> hmm, torn on this one; 1 MB aligned images sound not to bad for various things,
> and the extra size is rather negligible most of the time so we can mostly lose
> here, otoh. it should be callers decision if storage works fine now..
> 
>>
>> Signed-off-by: Aaron Lauterer <a.lauterer@proxmox.com>
>> ---
>> AFAICT this has an affect on EFI disks which after this revert will be
>> 528k and not 1M. Similar as if we would store it as a .raw file.
>>
> 
> that sounds like it _could_ break stuff..
> 
> @fiona: what was the state with local storage migration and those disk size
> mismatches? Or anything else coming to your mind?

I did a few tests in the meantime. An EFI disk on a directory based storage will 
be 528 K and can be moved to a ZFS storage with this patch. Without it, it will 
fail, similar to RBD which needs a 1M min size IIRC.