Filenames in utf-8 cannot be opened or written after upgrade to 1.2.3

[ethomson]

Which version of the blobfuse was used?

blobfuse 1.2.3

Which OS (please include version) are you using?

Ubuntu 18.04 (Linux hermes 5.3.0-1022-azure #23~18.04.1-Ubuntu SMP Mon May 11 11:55:56 UTC 2020 x86_64 x86_64 x86_64 GNU/Linux)

What problem was encountered?

I upgraded to blobfuse 1.2.3, now my volume no longer supports filenames in UTF-8.

Trying to create a file with a UTF-8 filename gives "Permission denied".

# touch Æ
touch: cannot touch 'Æ': Permission denied

On a volume with filenames already created:

# ls -Flas
ls: cannot access 'é': Permission denied
total 0K
 ? -????????? ? ?    ?             ?            ?  é
# cat <0301>
cat: é: Permission denied

This is not a permission problem; other files on the volume work as normal.

Have you found a mitigation/solution?

Downgrade to an earlier version. blobfuse 1.0.2 supports this correctly.

By default, blobfuse logs errors to syslog. If this is relevant, is there anything in the syslog that might be helpful?

Jun  6 16:36:00 hermes blobfuse[26878]: Sat Jun  6 16:36:00 2020 ==> REQUEST/RESPONSE#012#011GET https://MYVOLUME.blob.core.windows.net/media?comp=list&delimiter=/&include=metadata&maxresults=2&prefix=file/é&restype=container#012#01
1User-Agent: [Azure-Storage-Fuse/1.2.3]#012#011x-ms-date: [Sat, 06 Jun 2020 16:36:00 GMT]#012#011x-ms-version: [2018-11-09
]#012#011Authorization: [REDACTED]#012#011Transfer-Encoding: []#012#011---------------------------------------------------
-----------------------------#012#011RESPONSE Status: 403#012#011Content-Length: [744]#012#011Content-Type: [application/x
ml]#012#011Date: [Sat, 06 Jun 2020 16:35:59 GMT]#012#011Server: [Microsoft-HTTPAPI/2.0]#012#011x-ms-error-code: [Authentic
ationFailed]#012#011x-ms-request-id: [082cef6c-801e-0125-4f20-3c0600000000]
Jun  6 16:36:00 hermes blobfuse[26878]: Failure when attempting to determine if file/é exists on the service.
errno = 403.

If relevant, please share your mount command.

blobfuse /data --tmp-path=/mnt/blobtmp --config-file=/creds -o attr_timeout=240 -o entry_timeout=240 -o negative_timeout=120 -o allow_other --log-level=LOG_DEBUG

[ethomson]

Update: 1.1.1 is the last version that supports this correctly.

[vibhansa-msft]

This issue has been root-caused. Unicode character encoding is having issue and as a result URI constructed to access the blob is incorrect. Working on the fix.

[vibhansa-msft]

fixed in 1.3.1

[ethomson]

Thanks!