Bug 634977
| Summary: | Spinning up disk for device on standby path causing long boot up [rhel-5.5.z] | ||
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| Product: | Red Hat Enterprise Linux 5 | Reporter: | RHEL Program Management <pm-rhel> |
| Component: | kernel | Assignee: | Jiri Pirko <jpirko> |
| Status: | CLOSED ERRATA | QA Contact: | Red Hat Kernel QE team <kernel-qe> |
| Severity: | urgent | Docs Contact: | |
| Priority: | urgent | ||
| Version: | 5.5 | CC: | bdonahue, bzeranski, coughlan, dhoward, jpirko, karen.skweres, mchristi, phinchman, pm-eus, revers, rkhan, sandy.garza, tao, thenzl |
| Target Milestone: | rc | Keywords: | ZStream |
| Target Release: | --- | ||
| Hardware: | All | ||
| OS: | Linux | ||
| Whiteboard: | |||
| Fixed In Version: | Doc Type: | Bug Fix | |
| Doc Text: |
Previously, disks were spinning up for devices in an Active/Passive array on standby path side. This caused long boot up times which resulted in SD devices to be all created before multipath was ready. With this update, a disk is not spun up if returning NOT_READY on standby path.
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Story Points: | --- |
| Clone Of: | Environment: | ||
| Last Closed: | 2010-11-09 18:07:53 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: | 608109 | ||
| Bug Blocks: | |||
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Description
RHEL Program Management
2010-09-17 13:27:47 UTC
Hello Red Hat: Is the patch code for the Spinning up disk issue upstream? If so, can you give us a name and pointer to it? Thanks! On Fri, Feb 20, 2009 at 12:03:58PM +0000, Rengarajan, Narayanan (STSD) wrote: Spinning up disk is observed on standby paths until timeout, resulting in longer path restoration time in 2.6.27 kernel. Steps to reproduce: 1. present a standby lun to the host 2. do a discovery from the host (scan the scsi bus) 3. Spinning of disks is observed in /var/log/messages Whenever a device goes offline and comes back, the new sd device takes longer time to get created. This is because of the spinning up of disk in sd_spinup_disk fuction as the standby paths would return device not ready with 0x04/0x0b asc/ascq. Commit id from storage-tree: 3dd6f92a1a7ad85c54d47fd9d73371a32c0bde4 If you need me to look up the pointer, let me know. Hi Rob, Yes, looking up the pointer would be good. Thanks!! in kernel 2.6.18-194.20.1.el5 linux-2.6-scsi-fix-disk-spinup-for-shorter-path-restore-times.patch 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/RHSA-2010-0839.html
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New Contents:
Previously, disks were spinning up for devices in an Active/Passive array on standby path side. This caused long boot up times which resulted in SD devices to be all created before multipath was ready. With this update, a disk is not spun up if returning NOT_READY on standby path.
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