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Bug 1515109 - cache_restore tool may corrupt cache metadata [rhel-7.4.z]
Summary: cache_restore tool may corrupt cache metadata [rhel-7.4.z]
Alias: None
Product: Red Hat Enterprise Linux 7
Classification: Red Hat
Component: device-mapper-persistent-data
Version: 7.5
Hardware: Unspecified
OS: Unspecified
Target Milestone: rc
: ---
Assignee: Marian Csontos
QA Contact: Jakub Krysl
Apurva Bhide
Depends On: 1512844
TreeView+ depends on / blocked
Reported: 2017-11-20 07:26 UTC by Oneata Mircea Teodor
Modified: 2018-01-25 11:40 UTC (History)
10 users (show)

Fixed In Version: device-mapper-persistent-data-0.7.0-0.1.rc6.el7_4.1
Doc Type: Bug Fix
Doc Text:
Previously, the cache_restore utility passed incorrect arguments to a function. Additionally, it missed a call to flush dirty bits when version 2 metadata of the cache was used. As a consequence, the utility corrupted the cache metadata. With this update, cache_restore now handles the arguments correctly and adds the missing call. As a result, the utility no longer corrupts version 2 metadata.
Clone Of: 1512844
Last Closed: 2018-01-25 11:40:38 UTC
Target Upstream Version:

Attachments (Terms of Use)

System ID Priority Status Summary Last Updated
Red Hat Product Errata RHBA-2018:0143 normal SHIPPED_LIVE device-mapper-persistent-data bug fix update 2018-01-25 16:16:45 UTC

Description Oneata Mircea Teodor 2017-11-20 07:26:30 UTC
This bug has been copied from bug #1512844 and has been proposed to be backported to 7.4 z-stream (EUS).

Comment 3 Jakub Krysl 2017-11-20 13:30:32 UTC
# cache_restore -V
# cache_restore -i metadata -o /dev/mapper/vgtest-swapvol --debug-override-metadata-version 2
cache_restore: /usr/include/boost/optional/optional.hpp:631: boost::optional<T>::reference_type boost::optional<T>::get() [with T = long unsigned int; boost::optional<T>::reference_type = long unsigned int&]: Assertion `this->is_initialized()' failed.
Aborted (core dumped)

with this patch:
# cache_restore -V
# cache_restore -i metadata -o /dev/mapper/vgtest-swapvol --debug-override-metadata-version 2
Restoring: [==================================================]   100%

Comment 6 errata-xmlrpc 2018-01-25 11:40:38 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.

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