Bug 763983 (GLUSTER-2251) - NFS server hangs on 40 dds running in parallel
Summary: NFS server hangs on 40 dds running in parallel
Keywords:
Status: CLOSED DUPLICATE of bug 764052
Alias: GLUSTER-2251
Product: GlusterFS
Classification: Community
Component: nfs
Version: pre-2.0
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Shehjar Tikoo
QA Contact:
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2010-12-28 06:33 UTC by Prasanth
Modified: 2011-01-27 08:31 UTC (History)
1 user (show)

Fixed In Version:
Doc Type: Bug Fix
Doc Text:
Clone Of:
Environment:
Last Closed:
Regression: RTP
Mount Type: nfs
Documentation: ---
CRM:
Verified Versions:
Embargoed:

Attachments (Terms of Use)

Description Shehjar Tikoo 2010-12-28 03:43:06 UTC 
Please use accurate wording when filing a bug. NFS wasnt crashing anywhere in the tests that we conducted. The whole machine was freezing...two very different situations.
Comment 1 Prasanth 2010-12-28 06:33:58 UTC 
Hi,

This bug is opened based on the ticket: http://support.gluster.com/rt/Ticket/Display.html?id=2504

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The Gluster native NFS crashes when mounted locally over localhost and handling many parallel writes. 40 parallel "dd if=/dev/zero of=/nfsmount/inX.dat bs=1M" are started and the dd processes quickly hangs together with the NFS mount.
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I could reproduce this issue inhouse while doing 40+ parallel dd's. The server itself get hanged while doing parallel writes in the mount point. Unable to run any commands after that and a reboot is required to bring the server back online.

Regards,
Prasanth
Comment 2 Shehjar Tikoo 2011-01-27 05:31:42 UTC 
More information available at 2251.

*** This bug has been marked as a duplicate of bug 2320 ***
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