Bug 4644

Summary:	dump-0.4b4-9.i386.rpm doesn't read blocksize variable correctly
Product:	[Retired] Red Hat Raw Hide	Reporter:	steveh
Component:	dump	Assignee:	Nalin Dahyabhai <nalin>
Status:	CLOSED NOTABUG	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	1.0	CC:	steveh
Target Milestone:	---
Target Release:	---
Hardware:	i386
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	Bug Fix
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	1999-08-30 23:28:48 UTC	Type:	---
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:

Description steveh 1999-08-22 02:08:11 UTC

After installing dump-0.4b4-9.i386.rpm, my backup script
started failing, with a "DUMP: Please choose a blocksize <=
64KB" message, and a commandline that read:

/sbin/rdump 0ubdsf 126 62500 76800 poplar:/dev/rmt/0n /

Rolling back to dump-0.3-17.i386.rpm fixed the problem.

Environment:

P233 RH6.0 32Mb RAM 4.3Gb drive remotely backing up to
Solaris 2.6 Sparc 10 server onto an Exabyte 8mm tapedrive.

Steve

Comment 1 Jeff Johnson 1999-08-23 17:35:59 UTC

This a feature not a bug. There are few performance gains (and
possible losses!) with large block sizes due to max TCP window
sizes and/or physical DMA allocation.

Does dump-0.4b4 with 64K buffers run significantly slower than
dump-0.3 with 768K buffers to solaris server? Are you sure that
the blocksize and not some other factor that is the rate limiting
parameter?

Comment 2 Cristian Gafton 1999-08-27 23:25:59 UTC

jbj is the dump guru.