Bug #10051: kernel-mounted RBD image may block shutdown - rbd - Ceph

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Bug #10051

closed

kernel-mounted RBD image may block shutdown

Added by Dmitry Smirnov over 9 years ago. Updated almost 9 years ago.

Status:

Won't Fix

Priority:

Normal

Assignee:

Target version:

% Done:

Source:

Community (user)

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Backport:

Regression:

Severity:

1 - critical

Reviewed:

Affected Versions:

ceph-qa-suite:

Pull request ID:

Crash signature (v1):

Crash signature (v2):

Description

init-rbdmap fails to unmap an RBD image when the latter is still in use.
As consequence system shutdown hangs dead when network interfaces are de-configured after invocation of `/etc/init.d/rbdmap stop` if rbd module is not released.
This is happening when `umount` fails to release file system on RBD which in turn blocks `umount` of other mounted file systems that become inconsistent (i.e. need `fsck`) due to unclean shutdown.

More information is available from the following link where workaround (lazy umount as last resort) was proposed but sadly rejected: