Bug 246003

Summary:	CPIO error writing to tape on files larger than 7gb.
Product:	Red Hat Enterprise Linux 4	Reporter:	Ron Angel <ron.angel>
Component:	cpio	Assignee:	Radek Brich <rbrich>
Status:	CLOSED NOTABUG	QA Contact:	Brock Organ <borgan>
Severity:	low	Docs Contact:
Priority:	low
Version:	4.5	CC:	andrewf
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:	2007-06-29 11:41:35 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:

Description Ron Angel 2007-06-27 20:09:49 UTC

Description of problem:
CPIO error writing to tape on files larger than 7gb. We have 2 large files in
our backup:  The first file is 7gb in size and the other is 35gb in size.  cpio
generates errors on both files. I removed the first file and it then resulted
with the same error on the second file.

"cpio -oc --block-size=16MB >/dev/st0 </file_list"


Version-Release number of selected component (if applicable):
cpio-2.5-13.RHEL4

How reproducible:
This has occurred daily using a script.  The specific script portion using cpio
is noted in step one below.  The "file_list" is a flat file from a find command.


Steps to Reproduce:
1.cpio -oc --block-size=16MB >/dev/st0 </file_list
2."cpio field width not sufficient for storing file size" results on the large files
3. Backup runs a few more minutes and then hits the "end of tape" too soon
  
Actual results:


Expected results:


Additional info:

Comment 1 Radek Brich 2007-06-29 11:41:35 UTC

Size of files stored in cpio archive is limited to 4 GiB. Larger files are skipped.

You can use another archive type, like tar, which supports files up to 64 GiB.

Comment 2 Andrew Furey 2008-07-28 04:24:26 UTC

From the source it looks like it was part of the writeOutHeaderBufferOverflow patch.

I'm reverting to cpio-2.5-9.RHEL4 for now, as it has no such limit. Why was this
changed? 4 GiB seems to be a horribly low limit for an archive tool...