Bug 666800
| Summary: | [5.4][Xen]When many guests are created by "xm create", the boot time increases quadratically with the number of total VBDs | ||
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| Product: | Red Hat Enterprise Linux 5 | Reporter: | RHEL Program Management <pm-rhel> |
| Component: | xen | Assignee: | Xen Maintainance List <xen-maint> |
| Status: | CLOSED ERRATA | QA Contact: | Virtualization Bugs <virt-bugs> |
| Severity: | urgent | Docs Contact: | |
| Priority: | urgent | ||
| Version: | 5.4 | CC: | bsarathy, cww, minovotn, mjenner, moshiro, mrezanin, mshao, myamazak, pbonzini, pm-eus, qwan, xen-maint |
| Target Milestone: | rc | Keywords: | Regression, ZStream |
| Target Release: | --- | ||
| Hardware: | All | ||
| OS: | Linux | ||
| Whiteboard: | |||
| Fixed In Version: | xen-3.0.3-94.el5_4.4 | Doc Type: | Bug Fix |
| Doc Text: |
With a large number of virtual block devices (VBDs) or virtual guests, looking for duplicate devices could take a very long time and significantly increase overall boot time. With this update, this procedure has been optimized not to require XenStore, so that virtual guests now boot much faster. Additionally, this update also ensures that the domain record counter contains a correct value when a XenStore transaction is canceled. Note that when you add a network interface controller (NIC) with an automatically generated MAC address, this address is not verified. Avoid using a combination of hard-coded and automatically assigned MAC addresses, as this can lead to a guest network failure.
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Story Points: | --- |
| Clone Of: | Environment: | ||
| Last Closed: | 2011-03-08 10:20:36 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: | 661927, 671337, 672537, 678282, 680927 | ||
| Bug Blocks: | 514499 | ||
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Description
RHEL Program Management
2011-01-03 09:05:18 UTC
At http://people.redhat.com/mrezanin/bz666800 are 5.4.z rpms with all fixes. Can FJ please test this packages? FJ requesting release till 21st Feb. Are they aware that xen is not bind to kernel and can be released independently to kernel? Hi Qixiang, 532648 is not candidate to 5.4.z backport. This fix can be verified even with this problem. change to VERIFIED per comment 20.
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New Contents:
With a large number of virtual block devices (VBDs) or virtual guests, looking for duplicate devices could take a very long time and significantly increase overall boot time. With this update, this procedure has been optimized not to require XenStore, so that virtual guests now boot much faster. Additionally, this update also ensures that the domain record counter contains a correct value when a XenStore transaction is canceled. Note that when you add a network interface controller (NIC) with an automatically generated MAC address, this address is not verified. Avoid using a combination of hard-coded and automatically assigned MAC addresses, as this can lead to a guest network failure.
An advisory has been issued which should help the problem described in this bug report. This report is therefore being closed with a resolution of ERRATA. For more information on therefore solution and/or where to find the updated files, please follow the link below. You may reopen this bug report if the solution does not work for you. http://rhn.redhat.com/errata/RHBA-2011-0326.html |