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acf0ade362
There is plenty of compatibility code for a hw_hostid that isn't used by anything. At the same time, there are apparently issues with the current hostid logic. coredumb in #zfsonlinux on freenode reported that Fedora 17 changes its hostid on every boot, which required force importing his pool. A suggestion by wca was to adopt FreeBSD's behavior, where it treats hostid as zero if /etc/hostid does not exist Adopting FreeBSD's behavior permits us to eliminate plenty of code, including a userland helper that invokes the system's hostid as a fallback. Signed-off-by: Richard Yao <ryao@cs.stonybrook.edu> Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov> Closes #224
37 lines
1.6 KiB
C
37 lines
1.6 KiB
C
/*****************************************************************************\
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* Copyright (C) 2007-2010 Lawrence Livermore National Security, LLC.
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* Copyright (C) 2007 The Regents of the University of California.
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* Produced at Lawrence Livermore National Laboratory (cf, DISCLAIMER).
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* Written by Brian Behlendorf <behlendorf1@llnl.gov>.
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* UCRL-CODE-235197
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*
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* This file is part of the SPL, Solaris Porting Layer.
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* For details, see <http://zfsonlinux.org/>.
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*
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* The SPL is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the
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* Free Software Foundation; either version 2 of the License, or (at your
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* option) any later version.
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*
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* The SPL is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with the SPL. If not, see <http://www.gnu.org/licenses/>.
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\*****************************************************************************/
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#ifndef _SPL_SYSTEMINFO_H
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#define _SPL_SYSTEMINFO_H
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#define HW_HOSTID_LEN 11 /* minimum buffer size needed */
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/* to hold a decimal or hex */
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/* hostid string */
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/* Supplemental definitions for Linux. */
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#define HW_HOSTID_PATH "/etc/hostid" /* binary configuration file */
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#define HW_HOSTID_MASK 0xFFFFFFFF /* significant hostid bits */
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#endif /* SPL_SYSTEMINFO_H */
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