Bug 647189
| Summary: | migration of 8GB guest fails immediately | ||
|---|---|---|---|
| Product: | Red Hat Enterprise Linux 5 | Reporter: | Jiri Denemark <jdenemar> |
| Component: | kvm | Assignee: | Juan Quintela <quintela> |
| Status: | CLOSED DUPLICATE | QA Contact: | Virtualization Bugs <virt-bugs> |
| Severity: | medium | Docs Contact: | |
| Priority: | low | ||
| Version: | 5.6 | CC: | juzhang, mkenneth, virt-maint, ykaul |
| Target Milestone: | rc | ||
| Target Release: | --- | ||
| Hardware: | Unspecified | ||
| OS: | Unspecified | ||
| Whiteboard: | |||
| Fixed In Version: | Doc Type: | Bug Fix | |
| Doc Text: | Story Points: | --- | |
| Clone Of: | Environment: | ||
| Last Closed: | 2011-01-17 12:14:56 UTC | Type: | --- |
| Regression: | --- | Mount Type: | --- |
| Documentation: | --- | CRM: | |
| Verified Versions: | Category: | --- | |
| oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | |
| Cloudforms Team: | --- | Target Upstream Version: | |
| Embargoed: | |||
| Bug Depends On: | |||
| Bug Blocks: | 580949, 639305 | ||
how much physical memory do you have on that machine? just 8GB? If so, that is the problem and this is a duplicate of: https://bugzilla.redhat.com/show_bug.cgi?id=586643 For the record of what I said on irc yesterday, the host has 10GB of memory. This request was evaluated by Red Hat Product Management for inclusion in the current release of Red Hat Enterprise Linux. Because the affected component is not scheduled to be updated in the current release, Red Hat is unfortunately unable to address this request at this time. Red Hat invites you to ask your support representative to propose this request, if appropriate and relevant, in the next release of Red Hat Enterprise Linux. This request was erroneously denied for the current release of Red Hat Enterprise Linux. The error has been fixed and this request has been re-proposed for the current release. *** This bug has been marked as a duplicate of bug 586643 *** |
Description of problem: In fact, I was doing virsh managedsave but that uses qemu's migration capabilities so I'll talk about migration from now on... Migrating 8GB guest after boot works just fine. Then I modify guest's memory, e.g., using the following code: #include <stdlib.h> #define size 7900000000L int main(void) { char *ble = malloc(size); long long i; if (!ble) return -1; for (i = 0; i < size; i++) ble[i] = i & 0xff; return 0; } After this process finishes, the guest can no longer be migrated. Actually the migration doesn't even start and the following error is printed immediately: error: operation failed: migration to 'exec:cat | { dd bs=4096 seek=1 if=/dev/null && dd bs=1048576; } 1<>/var/lib/libvirt/qemu/save//console.save' failed: migration failed No message appears on qemu's stderr. Version-Release number of selected component (if applicable): kvm-83-205.el5 kernel-2.6.18-228.el5 How reproducible: Everytime. Steps to Reproduce: 1. start a guest with 8GB of memory 2. modify guest's memory 3. virsh managedsave Actual results: migration failed Expected results: guest saved successfully Additional info: The guest is RHEL-5.5