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Bug 1285365 - cp will corrupt sparse files with trailing extents
Summary: cp will corrupt sparse files with trailing extents
Keywords:
Status: CLOSED ERRATA
Alias: None
Product: Red Hat Enterprise Linux 7
Classification: Red Hat
Component: coreutils
Version: 7.2
Hardware: All
OS: Unspecified
urgent
high
Target Milestone: rc
: ---
Assignee: Ondrej Vasik
QA Contact: qe-baseos-daemons
URL:
Whiteboard:
Depends On: 1284906
Blocks:
TreeView+ depends on / blocked
 
Reported: 2015-11-25 13:26 UTC by Jan Kurik
Modified: 2016-02-16 10:24 UTC (History)
6 users (show)

Fixed In Version: coreutils-8.22-15.el7_2.1
Doc Type: Bug Fix
Doc Text:
When creating sparse files, the fallocate utility could allocate extents beyond EOF using FALLOC_FL_KEEP_SIZE. As a consequence, when there was a gap (hole) between the extents, and EOF was within that gap, the final hole was not reproduced, which caused silent data corruption in the copied file due to its size being too small. With this update, the cp command ensures that extents beyond the apparent file size are not processed, as such processing and allocating is not currently supported. As a result, silent data corruption in certain type of sparse files no longer occurs.
Clone Of: 1284906
Environment:
Last Closed: 2016-02-16 10:24:53 UTC
Target Upstream Version:
Embargoed:

Attachments (Terms of Use)


Links
System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHBA-2016:0177 0 normal SHIPPED_LIVE coreutils bug fix update 2016-02-16 15:24:24 UTC

Description Jan Kurik 2015-11-25 13:26:13 UTC 
This bug has been copied from bug #1284906 and has been proposed
to be backported to 7.2 z-stream (EUS).
Comment 7 errata-xmlrpc 2016-02-16 10:24:53 UTC 
Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.

For information on the advisory, and where to find the updated
files, follow the link below.

If the solution does not work for you, open a new bug report.

https://rhn.redhat.com/errata/RHBA-2016-0177.html
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