Bug 1475821 - Got disconnected from server with blk_update_request: I/O error, dev dm-0 error on server's console.
Got disconnected from server with blk_update_request: I/O error, dev dm-0 err...
Status: NEW
Product: ovirt-engine
Classification: oVirt
Component: BLL.HostedEngine (Show other bugs)
4.1.3.5
x86_64 Linux
unspecified Severity high (vote)
: ovirt-4.3.0
: ---
Assigned To: Doron Fediuck
meital avital
:
Depends On:
Blocks:
  Show dependency treegraph
 
Reported: 2017-07-27 08:38 EDT by Nikolai Sednev
Modified: 2017-07-31 04:17 EDT (History)
2 users (show)

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Fixed In Version:
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Story Points: ---
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Last Closed:
Type: Bug
Regression: ---
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Category: ---
oVirt Team: Storage
RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: ---
amureini: ovirt‑4.3?
nsednev: planning_ack?
nsednev: devel_ack?
nsednev: testing_ack?


Attachments (Terms of Use)
sosreport from SPM host alma04 (host on which the deployment was initially started as on first host) (10.88 MB, application/x-xz)
2017-07-27 08:41 EDT, Nikolai Sednev
no flags Details
sosreport from the engine (8.28 MB, application/x-xz)
2017-07-27 08:42 EDT, Nikolai Sednev
no flags Details
sosreport from alma03 (second host) (11.46 MB, application/x-xz)
2017-07-27 08:44 EDT, Nikolai Sednev
no flags Details
screenshot of an error from remote console (367.04 KB, image/png)
2017-07-27 08:46 EDT, Nikolai Sednev
no flags Details
screencast of disconnected alma03 after making changes to network (9.90 MB, application/octet-stream)
2017-07-27 09:42 EDT, Nikolai Sednev
no flags Details

  None (edit)
Description Nikolai Sednev 2017-07-27 08:38:37 EDT
Description of problem:
Got disconnected from server with blk_update_request: I/O error, dev dm-0 error on server's console.

I had an open ssh connection to SPM ha-host, which I've turned in to maintenance from UI and attached one additional nene-required network to it, then I've tried to activate the server back and got disconnected. 
After some time I've power-cycled the server and after few minutes (around 10) it got active within the UI.

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


How reproducible:
Sometimes - I do not have any specific reproduction steps for this one, just attaching the sosreport from host and engine to document this here.

Steps to Reproduce:
1.Deploy hosted-engine over iSCSI, on pair of hosts.
2.Add one iSCSI data storage domain.
3.Add one or two none-required networks.
4.Create multipath iSCSI bond to HE-storage domain.
5.Set in to maintenance the SPM host from UI.
6.Attach one of none-required networks to one of empty NICs on host in maintenance.
7.Activate back host.
8.Host loosing connectivity.

Actual results:
Host loosing connectivity.

Expected results:
Host should not get disconnected.

Additional info:
Sosreports from engine and SPM host being attached.
Comment 1 Nikolai Sednev 2017-07-27 08:41 EDT
Created attachment 1305351 [details]
sosreport from SPM host alma04 (host on which the deployment was initially started as on first host)
Comment 2 Nikolai Sednev 2017-07-27 08:42 EDT
Created attachment 1305352 [details]
sosreport from the engine
Comment 3 Nikolai Sednev 2017-07-27 08:44 EDT
Created attachment 1305353 [details]
sosreport from alma03 (second host)
Comment 4 Nikolai Sednev 2017-07-27 08:46 EDT
Created attachment 1305354 [details]
screenshot of an error from remote console
Comment 5 Nikolai Sednev 2017-07-27 09:42 EDT
Created attachment 1305379 [details]
screencast of disconnected alma03 after making changes to network

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