Bug 613490

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.