Bugzilla – Bug 736
[IPF-VTI] Creating VTI domain will meet "Cannot allocate memory"
Last modified: 2006-10-18 22:01:06 CDT
Environment: ------------ Service OS (ia32/ia32e/IA64): RHEL4u3 IA64 Guest OS (ia32/ia32e/IA64): RHEL4u3 IA64 VTI Change Set: 10937 Hardware: Tiger4 physical memory: 8G domain0 mem: 1G Guest mem: 2G domain0's sched: bvt Bug detailed description: -------------------------- With creating and destroying a 2G memory VTI domain a lot of times (should >5 times), I will meet this issue. Control Panel will report "Cannot allocate memory" and refuse to create VTI domain. But if I continue to try to recreate VTI domain for several times, finaly the VTI domain can be created successfully. So strange~ Reproduce steps: ---------------- 1. create 2G memory VTI domain 2. after it is up, destroy it. 3. redo step 1 and step 2 for several times. 4. meet the creating failure issue. 5. if retrying create several times, VTI domain can be up again.
Situation is the same on Domain-U. I found that copy_from_guest in do_mem_op@xen/common/memory.c failed and returned a non-zero value. 'xm create' reports 'Cannot allocate memory' because of this non-zero value. Please see "[Xen-ia64-devel] [PATCH][RFC] copy_from/to_guest" and its follow ups. http://thread.gmane.org/gmane.comp.emulators.xen.ia64/3726/focus=3726 When xencomm is ported to ia64, the porting patch will get rid of this problem, too.
should has been fixed, as didn't see it for a long time.
Fixed in xen-ia64-unstable changeset: 11720