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Bug #5287

closed

the permission of file in CephFS

Added by chen atrmat almost 11 years ago. Updated over 7 years ago.

Status:
Resolved
Priority:
High
Assignee:
-
Category:
-
Target version:
-
% Done:

0%

Source:
Development
Tags:
Backport:
Regression:
Severity:
3 - minor
Reviewed:
Affected Versions:
ceph-qa-suite:
Component(FS):
Labels (FS):
Pull request ID:
Crash signature (v1):
Crash signature (v2):

Description

Hi all,
I used the CephFS v0.56.3 to store VMs. There're 8 nodes of my cluster, and I mount the cephFS in every node.
If I want to do live migration in my cluster, then I have to change the mode of VMs to enable another nodes to rw the VM files.
Is the CephFS can give the specified nodes the permission to write the files?

e.g. node 1 generated a VM, then the VM was migrated to node 2, the own of VM should be changed to node 2 in mount point.

The permission of data in CephFS is in MDS, right? If so, how to operate MDS to let annother nodes can write other's file?

Any better solutions about the file permission instead of chmod file?

Is there some method like NFS to mapping user-id during live migration?

BR

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