Hello,
I'm sorry to make you waste time on me, but I were not able to check
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Thank you, Andrea
At 22/08/2013 03:15, FreeBSD Errata Notices wrote:
>-----BEGIN PGP SIGNED MESSAGE-----
>Hash: SHA1
>
>=============================================================================
>FreeBSD-EN-13:03.mfi Errata Notice
> The FreeBSD Project
>
>Topic: data corruption with mfi(4) JBOD disks > 2TB
>
>Category: contrib
>Module: mfi
>Announced: 2013-08-22
>Credits: Steven Hartland, Doug Ambrisko
>Affects: FreeBSD 9.1
>Corrected: 2012-12-03 18:37:02 UTC (stable/9, 9.1-STABLE)
> 2013-08-22 00:51:48 UTC (releng/9.1, 9.1-RELEASE-p6)
>
>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:http://security.freebsd.org/>.
>
>I. Background
>
>The mfi(4) driver supports LSI's next generation PCI Express SAS RAID
>controllers. The driver supports JBOD attachment through /dev/mfisyspd?
>device nodes.
>
>Logical block addressing (LBA) is a common scheme used for specifying the
>location of sectors on hard drives.
>
>II. Problem Description
>
>The way mfi(4) implements access of "syspd" or also known as JBOD always
>uses READ10/WRITE10 commands for underlying disk. When writing over 2^32
>sectors, the LBA would wrap and starts writing at the beginning of the
>disk.
>
>III. Impact
>
>Writing beyond 2TB to mfi(4) connected JBODs would result in data corruption.
>
>IV. Workaround
>
>No workaround is available, but systems that do not use mfi(4) as a JBOD
>HBA or do not have disks with 2^32 or more sectors (2^41 or more bytes with
>512-byte logical sector size) are not affected.
>
>V. Solution
>
>Perform one of the following:
>
>1) Upgrade your system to a supported FreeBSD stable or release / security
>branch (releng) dated after the correction date.
>
>2) To update your present 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.
>
># fetch http://security.FreeBSD.org/patches/EN-13:03/mfi.patch
># fetch http://security.FreeBSD.org/patches/EN-13:03/mfi.patch.asc
># gpg --verify mfi.patch.asc
>
>b) Apply the patch.
>
># cd /usr/src
># patch < /path/to/patch
>
>c) Recompile your kernel as described in
><URL:http://www.FreeBSD.org/handbook/kernelconfig.html> and reboot the
>system.
>
>3) 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
>
>VI. Correction details
>
>The following list contains the revision numbers of each file that was
>corrected in FreeBSD.
>
>Branch/path Revision
>- -------------------------------------------------------------------------
>stable/9/ r243824
>releng/9.1/ r254631
>- -------------------------------------------------------------------------
>
>VII. References
>
>http://www.freebsd.org/cgi/query-pr.cgi?pr=kern/173291
>
>The latest revision of this Errata Notice is available at
>http://security.FreeBSD.org/advisories/FreeBSD-EN-13:03.mfi.asc
>
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