sqlite dabatase in mounted folder is always locked

[alebianco]

Expected behavior

a sqlite database file can be place is a folder mounted from the host and used normally

Actual behavior

any operation on such database results in a "database is locked" error
database files placed in non-mounted folder work as expected

Information

• Diagnostic ID from "Diagnose & Feedback" in the menu.
  90E72802-EF07-4D06-8B68-EC91E23CDBBE/2016-07-29_20-36-27
• host distribution and version (Windows version, build number, etc)

> [System.Environment]::OSVersion.Version

Major  Minor  Build  Revision
-----  -----  -----  --------
10     0      10586  0

Steps to reproduce the behavior

1. docker run --rm -it -v /c/Users/alebi/Desktop/db/data:/data --name sqlite sqlite /data/data.db
2. .database

seq  name             file
---  ---------------  ----------------
0    main             /data/data.db

1. CREATE TABLE IF NOT EXISTS foo(bar int);
Error: database is locked

Additional info

These are the mounting options

> docker run --rm -v /c/Users/alebi/Desktop/db/data:/data alpine cat /proc/self/mountinfo | Select-String -pattern "/data"

122 102 0:40 /Users/alebi/Desktop/db/data /data rw,relatime - cifs //10.0.75.1/C
rw,vers=1.0,cache=strict,username=alebi,domain=ANTARES,uid=0,noforceuid,gid=0,noforcegid,addr=10.0.75.1,file_mode=0755,dir_mode=0755,iocharset=utf8,nounix,serverino,mapposix,noperm,rsize=61440,wsize=65536,actimeo=1

This seems to be a "common" CIFS issue related to the byte-range blocking that behaves unexpectedly with sqlite locks. It's usually resolved by using the nobrl flag in the mounting options.

The MobyLinux.ps1 script (C:\Program Files\Docker\Docker\resources) used to contain the mount flags, were I could add the nobrl option when needed, as of the latest version (1.12.0-beta21) the mount flags were removed so there's no workaround (yet).

[ebriney]

Thanks for reporting, we will add the flag to fix your issue.

[alebianco]

thanks @ebriney
in the meantime, if you know of any workaround or changes i can do manually to fix this, please let me know. Most of my images use sqlite with a mounted folder and are unusable at the moment

[ebriney]

Unfortunately we moved the binding code in C# so there is no workaround except installing a previous version and wait for the hot fixes release soon

[dgageot]

Closing. nobrl option was added on master branch.

[howlerwolf1313]

Hey @dgageot,
New to Docker in Windows, how do we go about adding that "nobrl" option when mounting shared drives? Do I need to be using the beta to get the fix? Thank you

[alebianco]

@howlerwolf1313 it should be released on a beta first (hasn't been released yet that i know) and then hopefully in the stable version after a while.

[dgageot]

@howlerwolf1313 It should be relased on beta channel next week

[howlerwolf1313]

@alebianco @dgageot Thank you.

[londoncalling]

@dgageot @friism I need help documenting the nobrl flag per the docs issue raised.

See Docker for Windows issue 694 and the docs issue #3147 I opened to track it.

I'm running the latest Docker for Windows build 17.05.0-ce-win-11 (12053), but I need help figuring this out.

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