Bug 1147398

Summary: qemu-system-x86_64: block.c bdrv_error_action: Assertion `error >= 0' failed.
Product: [Fedora] Fedora Reporter: Markus Stockhausen <mst>
Component: qemuAssignee: Fedora Virtualization Maintainers <virt-maint>
Status: CLOSED DUPLICATE QA Contact: Fedora Extras Quality Assurance <extras-qa>
Severity: unspecified Docs Contact:
Priority: unspecified    
Version: 20CC: amit.shah, berrange, cfergeau, dwmw2, itamar, pbonzini, rjones, scottt.tw, virt-maint
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Hardware: Unspecified   
OS: Unspecified   
Whiteboard:
Fixed In Version: Doc Type: Bug Fix
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Clone Of: Environment:
Last Closed: 2014-09-29 08:38:23 UTC Type: Bug
Regression: --- Mount Type: ---
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
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Description Markus Stockhausen 2014-09-29 08:15:35 UTC 
Description of problem:

Out company and others encountered the following sporadic qemu crash for VMs that are stored on NFS.

qemu-system-x86_64: block.c:2806: bdrv_error_action: Assertion `error >= 0' failed.
2014-06-30 08:40:11.686+0000: shutting down

Form reading the code at the mentioned location I assume there should be some
further details to find.

...
void bdrv_error_action(BlockDriverState *bs, BlockErrorAction action,
                       bool is_read, int error)
{
    assert(error >= 0);
    bdrv_emit_qmp_error_event(bs, QEVENT_BLOCK_IO_ERROR, action, is_read);
    if (action == BDRV_ACTION_STOP) {
        vm_stop(RUN_STATE_IO_ERROR);
        bdrv_iostatus_set_err(bs, error);
    }
}
...

Qemu is started with libvirt so these are the only logs I found. Any idea where to 
search next?

Version-Release number of selected component (if applicable):

Fedora 20, qemu 1.6.2

How reproducible:

once per month

Steps to Reproduce:

Don't know

Actual results:

VM crashes

Expected results:

vm continues to run, a more helpful error is shown.
Comment 1 Richard W.M. Jones 2014-09-29 08:38:23 UTC 

*** This bug has been marked as a duplicate of bug 1147282 ***