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The bug originated from clearing mount's group cache on master disconnected
event and using the same cache to register user's groups in the master later on.
The cache was already empty when attempting the registration so there were no
groups to tell master about so the operation performed on the mounted filesystem
failed.

This fix changes the registration part in the client so that it uses client
context to populate the cache and update credentials (groups) in master if
the group cache is empty, for example due to disconnection from master.

Context references were made non-const because updating groups in group cache
requires assigning a new gid value in the client context.

Fixes bug introduced by 7e7ad72

Change-Id: Idac2ebc74e73ca306462e07bd3b943c2efa73a0d
d61a93e

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README.md

LizardFS Gitter chat

Introduction

LizardFS is a highly reliable, scalable and efficient distributed file system. It spreads data over a number of physical servers, making it visible to an end user as a single file system.

For support please contact contact@lizardfs.com or visit www.lizardfs.com.

Useful links

You can also join the community irc at #lizardfs on FreeNode.

Participation

Please feel free to contribute to documentation, wiki and the code. Rules for submitting patches can be found in the developers Guide in the LizardFS documentation: https://docs.lizardfs.com/devguide/submitting.html

We would love to hear about your use cases

We would like to engage more with our community so if you are able to please email us with your use case at: info@lizardfs.org.

It will help us make LizardFS even better and will help others choose LizardFS for their storage.

You could mention the following:

- purpose of the installation,
- RAW capacity,
- features used,
- HW architecture (including network),
- number of concurrent users,
- some performance stats,
- if you want us to anonymise the data or not.

Thank you for your help.

The LizardFS team.