Bug 170456 - [RHEL 4] savecore should allow gzip on-the-fly
[RHEL 4] savecore should allow gzip on-the-fly
Status: CLOSED DUPLICATE of bug 168641
Product: Red Hat Enterprise Linux 4
Classification: Red Hat
Component: diskdumputils (Show other bugs)
4.0
All Linux
medium Severity medium
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Assigned To: Akira Imamura
: FutureFeature
Depends On: 168641
Blocks:
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Reported: 2005-10-11 17:46 EDT by Brian Long
Modified: 2007-11-30 17:07 EST (History)
5 users (show)

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Doc Type: Enhancement
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Last Closed: 2005-11-22 19:02:23 EST
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Description Brian Long 2005-10-11 17:46:16 EDT
From Bugzilla Helper:
User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.7.12) Gecko/20050921 Red Hat/1.0.7-1.4.1 Firefox/1.0.7

Description of problem:
savecore needs to support a new CLI flag that integrates gzip compression on-the-fly so vmcore does not take so much space in /var/crash.  I had a 64GB host netdump the other day and it took 18 hours over an OC-12 WAN to dump.  When I gzip'd the core, it was ~9GB.  Solaris compresses their vmcore files by default.  I would like to see an option added to /etc/sysconfig/diskdump that /etc/init.d/diskdump would read and pass to $SAVECORE.  This option would enable gzip on-the-fly.  It might increase the time savecore takes to run, but it would mean I wouldn't need to have a 64GB /var/crash and a 64GB dump partition (both a waste) if I want to transition from netdump to diskdump.

Version-Release number of selected component (if applicable):
diskdumputils-1.1.8-1

How reproducible:
Always

Steps to Reproduce:
1. Initiate kernel dump with diskdump enabled
2. /var/crash/vmcore is uncompressed

  

Actual Results:  /var/crash/vmcore is the size of RAM

Expected Results:  /var/crash/vmcore.gz would be a fraction of the size of RAM and would allow for easy transfer to Red Hat support for kernel engineer analysis.

Additional info:
Comment 4 Akira Imamura 2005-11-22 19:02:23 EST

*** This bug has been marked as a duplicate of 168641 ***

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