Bug 613490 - blk_tap: Error initialising /dev/xen/blktap - No more devices
Summary: blk_tap: Error initialising /dev/xen/blktap - No more devices
Status: RESOLVED DUPLICATE of bug 589788
: 612081 (view as bug list)
Alias: None
Product: openSUSE 11.2
Classification: openSUSE
Component: Xen (show other bugs)
Version: Final
Hardware: x86-64 openSUSE 11.2
: P2 - High : Critical (vote)
Target Milestone: ---
Assignee: Jan Beulich
QA Contact: Jason Douglas
URL:
Whiteboard:
Keywords:
Depends on:
Blocks:
 
Reported: 2010-06-11 09:40 UTC by Henry Laurent
Modified: 2010-06-14 15:31 UTC (History)
2 users (show)

See Also:
Found By: Community User
Services Priority:
Business Priority:
Blocker: ---
Marketing QA Status: ---
IT Deployment: ---


Attachments
xen-hotplug.log (24.05 KB, text/x-log)
2010-06-11 09:42 UTC, Henry Laurent
Details
xend.log (15.99 KB, text/x-log)
2010-06-11 09:42 UTC, Henry Laurent
Details
screenshot of a booting guest (23.78 KB, image/png)
2010-06-11 09:44 UTC, Henry Laurent
Details

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Description Henry Laurent 2010-06-11 09:40:44 UTC
User-Agent:       Mozilla/5.0 (X11; U; Linux x86_64; fr; rv:1.9.1.9) Gecko/20100317 SUSE/3.5.9-0.1 Firefox/3.5.9

On openSUSE 11.2 (x86_64) with xen-tools-3.4.1_19718_04-2.1.x86_64
kernel-xen-base-2.6.31.8-0.1.1.x86_64
xen-libs-3.4.1_19718_04-2.1.x86_64
kernel-xen-2.6.31.8-0.1.1.x86_64
xen-kmp-desktop-3.4.1_19718_04_2.6.31.5_0.1-2.1.x86_64
xen-3.4.1_19718_04-2.1.x86_64

i can no more create or reboot any VMs using tap:aio driver. All seems to be fine with other VMs with "file" driver

My vms complains about no mounted disks and i find in my logs:

un  7 16:11:41 alca2 kernel: [12537879.848530] blk_tap: Error initialising
/dev/xen/blktap - No more devices
Jun  7 16:11:41 alca2 logger: /etc/xen/scripts/blktap: Writing
backend/tap/136/51712/hotplug-status connected to xenstore.
Jun  7 16:11:41 alca2 logger: /etc/xen/scripts/blktap: Writing
backend/tap/136/51728/hotplug-status connected to xenstore.
Jun  7 16:11:44 alca2 kernel: [12533839.409637] blktap: ring-ref 8,
event-channel 12, protocol 1 (x86_64-abi)
Jun  7 16:11:44 alca2 kernel: [12533839.412361] blktap: ring-ref 9,
event-channel 13, protocol 1 (x86_64-abi)
Jun  7 16:12:09 alca2 logger: /etc/xen/scripts/blktap: remove
XENBUS_PATH=backend/tap/136/51712
Jun  7 16:12:09 alca2 logger: /etc/xen/scripts/blktap: remove
XENBUS_PATH=backend/tap/136/51728
Jun  7 16:12:09 alca2 logger: /etc/xen/scripts/blktap: remove
XENBUS_PATH=backend/tap/136/51728
Jun  7 16:12:09 alca2 logger: /etc/xen/scripts/blktap: remove
XENBUS_PATH=backend/tap/136/51712


Reproducible: Always

Steps to Reproduce:
1.VM's with high ID (above 130)
2.
3.
Comment 1 Henry Laurent 2010-06-11 09:42:13 UTC
Created attachment 368610 [details]
xen-hotplug.log
Comment 2 Henry Laurent 2010-06-11 09:42:46 UTC
Created attachment 368611 [details]
xend.log
Comment 3 Henry Laurent 2010-06-11 09:44:25 UTC
Created attachment 368612 [details]
screenshot of a booting guest
Comment 4 Jan Beulich 2010-06-14 15:28:43 UTC
*** Bug 612081 has been marked as a duplicate of this bug. ***
Comment 5 Jan Beulich 2010-06-14 15:31:58 UTC
This very likely is a duplicate (just with different manifestation) of bug 589788. Therefore, a fix is already queued for a future kernel maintenance update. If the issue persists beyond that, please re-open.

*** This bug has been marked as a duplicate of bug 589788 ***