Attachment 220151 Details for Bug 249438 – Partially complete errata notice

Partially complete errata notice

pr249438-errata.txt (text/plain), 3.93 KB, created by Alan Somers on 2020-12-02 02:38:03 UTC

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Creator: Alan Somers

Created: 2020-12-02 02:38:03 UTC

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>=============================================================================
>FreeBSD-EN-XX:XX:zfs                                      Errata Notice
>                                                          The FreeBSD Project
>
>Topic:          zfs receive
>
>Category:       core
>Module:         libzfs
>Announced:      2020-XX-XX
>Credits:        
>Affects:        FreeBSD 12.2
>Corrected:      2020-12-01 08:15:18 UTC (stable/12, 12.2-STABLE)
>                2020-XX-XX XX:XX:XX UTC (releng/12.2, 12.2-RELEASE-pXX)
>
>For general information regarding FreeBSD Errata Notices and Security
>Advisories, including descriptions of the fields above, security
>branches, and the following sections, please visit
><URL:https://security.FreeBSD.org/>.
>
>I.   Background
>
>The zfs send/receive commands are used to efficiently copy datasets from one
>location to another.  With the -i or -I flags, zfs send can incrementally
>update an already-copied dataset.  When using the -R flag with zfs send and the
>-F flag with zfs receive, zfs receive will delete any snapshots on the
>destination that have already been deleted on the source.
>
>II.  Problem Description
>
>A regression in FreeBSD 12.2 causes zfs receive to fail to delete snapshots
>that have been deleted on the source side.
>
>III. Impact
>
>Backup and replication systems based on ZFS send/receive that manage snapshots
>solely on the source side will fail to delete snapshots on the destination
>side.  This may lead to out-of-space conditions on the destination.
>
>IV.  Workaround
>
>Errant snapshots can be manually removed from the destination with "zfs destroy".
>
>Backup and replication systems that don't use the -R flag with zfs send will be
>unaffected.  For example, sysutils/zrepl is unaffected.
>
>V.   Solution
>
><insert solution here>
>
>Upgrade your system to a supported FreeBSD stable or release / security
>branch (releng) dated after the correction date.
>
>Perform one of the following:
>
>1) To update your system via a binary patch:
>
>Systems running a RELEASE version of FreeBSD on the i386 or amd64
>platforms can be updated via the freebsd-update(8) utility:
>
># freebsd-update fetch
># freebsd-update install
>
>2) To update your system via a source code patch:
>
>The following patches have been verified to apply to the applicable
>FreeBSD release branches.
>
>a) Download the relevant patch from the location below, and verify the
>detached PGP signature using your PGP utility.
>
>[FreeBSD 11.4]
># fetch https://security.FreeBSD.org/patches/EN-XX:XX/XXXX.patch
># fetch https://security.FreeBSD.org/patches/EN-XX:XX/XXXX.patch.asc
># gpg --verify XXXX.patch.asc
>
>b) Apply the patch.  Execute the following commands as root:
>
># cd /usr/src
># patch < /path/to/patch
>
>c) Recompile the operating system using buildworld and installworld as
>described in <URL:https://www.FreeBSD.org/handbook/makeworld.html>.
>
>Restart all daemons that link directly to libzfs.so.  A restart is not required
>for daemons that invoke the zfs executable.
>
>VI.  Correction details
>
>The following list contains the correction revision numbers for each
>affected branch.
>
>Branch/path                                                      Revision
>-------------------------------------------------------------------------
>stable/12/                                                        r368233
>releng/12.2/                                                      rXXXXXX
>-------------------------------------------------------------------------
>
>To see which files were modified by a particular revision, run the
>following command, replacing NNNNNN with the revision number, on a
>machine with Subversion installed:
>
># svn diff -cNNNNNN --summarize svn://svn.freebsd.org/base
>
>Or visit the following URL, replacing NNNNNN with the revision number:
>
><URL:https://svnweb.freebsd.org/base?view=revision&revision=NNNNNN>
>
>VII. References
>
><URL:https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=249438>
>
>The latest revision of this advisory is available at
><URL:https://security.FreeBSD.org/advisories/FreeBSD-EN-XX:XX.XXXXX.asc>

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Attachments on bug 249438: 218061 | 218957 | 220151