mkfs.erofs fails (failed to build shared xattrs, err 61)

[Gao Xiang]

On 2024/3/12 18:44, Gao Xiang wrote:
> Hi Gael,
> 
> On 2024/3/12 17:57, Gael Donval wrote:
>> Dear list,
>>
>>     $ mkdir foo && touch foo/bar && mkfs.erofs foo.erofs.img foo
>>     mkfs.erofs 1.7.1
>>     <E> erofs: failed to build shared xattrs: [Error 61] No data available
>>     <E> erofs:     Could not format the device : [Error 61] No data available
>> That is at a location backed by BTRFS (btrfs-progs v6.7.1) on kernel 6.8.0.
>>
>> If I use a TMPFS-supported folder instead all goes well.
>>
>>
>> Of course (NB "-x-1"),
>>
>>     $ mkdir foo && touch foo/bar && mkfs.erofs -x-1 foo.erofs.img foo
>>
>> also works but is not how mkfs.erofs is meant to work in the general case.
> 
> Thanks for your feedback.
> 
> Currently I don't have some BTRFS environment, I could set up one later.
> Yet in parallel could you provide a full message of
> "strace mkfs.erofs -x-1 foo.erofs.img foo" on BTRFS too?

sorry, I meant "strace mkfs.erofs foo.erofs.img foo"

Thanks,
Gao Xiang

> 
> Thanks,
> Gao Xiang
> 
>>
>> Kind regards,
>> Gaël