12a88a3d63
Previously, this didn't work because L2ARC devices' labels don't contain pool GUIDs. Modify zfsd so that the pool GUID won't be required: lib/libdevdctl/guid.h Change INVALID_GUID from a uint64_t constant to a function that returns an invalid Guid object. Remove the void constructor. Nothing uses it, and it violates RAII. cddl/usr.sbin/zfsd/case_file.h cddl/usr.sbin/zfsd/case_file.cc Allow CaseFile::Find to match a CaseFile based on Vdev GUID alone. In CaseFile::ReEvaluate, attempt to online devices even if the newly arrived device has no pool GUID. cddl/usr.sbin/zfsd/vdev_iterator.cc Iterate through a pool's cache devices as well as its regular devices. Reported by: avg Reviewed by: avg MFC after: 3 weeks Sponsored by: Spectra Logic Corp Differential Revision: https://reviews.freebsd.org/D12791
163 lines
4.1 KiB
C++
163 lines
4.1 KiB
C++
/*-
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* Copyright (c) 2011, 2012, 2013 Spectra Logic Corporation
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions, and the following disclaimer,
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* without modification.
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* 2. Redistributions in binary form must reproduce at minimum a disclaimer
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* substantially similar to the "NO WARRANTY" disclaimer below
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* ("Disclaimer") and any redistribution must be conditioned upon
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* including a substantially similar Disclaimer requirement for further
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* binary redistribution.
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*
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* NO WARRANTY
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
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* IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGES.
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*
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* Authors: Justin T. Gibbs (Spectra Logic Corporation)
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*
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* $FreeBSD$
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*/
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/**
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* \file vdev_iterator.cc
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*
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* Implementation of the VdevIterator class.
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*/
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#include <sys/cdefs.h>
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#include <sys/fs/zfs.h>
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#include <stdint.h>
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#include <syslog.h>
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#include <libzfs.h>
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#include <list>
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#include <string>
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#include <devdctl/exception.h>
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#include <devdctl/guid.h>
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#include "vdev.h"
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#include "vdev_iterator.h"
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#include "zfsd_exception.h"
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/*============================ Namespace Control =============================*/
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using DevdCtl::Guid;
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/*=========================== Class Implementations ==========================*/
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/*------------------------------- VdevIterator -------------------------------*/
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VdevIterator::VdevIterator(zpool_handle_t *pool)
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: m_poolConfig(zpool_get_config(pool, NULL))
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{
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Reset();
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}
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VdevIterator::VdevIterator(nvlist_t *poolConfig)
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: m_poolConfig(poolConfig)
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{
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Reset();
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}
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void
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VdevIterator::Reset()
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{
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nvlist_t *rootVdev;
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nvlist **cache_child;
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int result;
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uint_t cache_children;
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result = nvlist_lookup_nvlist(m_poolConfig,
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ZPOOL_CONFIG_VDEV_TREE,
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&rootVdev);
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if (result != 0)
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throw ZfsdException(m_poolConfig, "Unable to extract "
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"ZPOOL_CONFIG_VDEV_TREE from pool.");
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m_vdevQueue.assign(1, rootVdev);
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result = nvlist_lookup_nvlist_array(rootVdev,
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ZPOOL_CONFIG_L2CACHE,
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&cache_child,
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&cache_children);
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if (result == 0)
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for (uint_t c = 0; c < cache_children; c++)
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m_vdevQueue.push_back(cache_child[c]);
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}
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nvlist_t *
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VdevIterator::Next()
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{
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nvlist_t *vdevConfig;
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if (m_vdevQueue.empty())
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return (NULL);
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for (;;) {
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nvlist_t **vdevChildren;
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int result;
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u_int numChildren;
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vdevConfig = m_vdevQueue.front();
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m_vdevQueue.pop_front();
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/* Expand non-leaf vdevs. */
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result = nvlist_lookup_nvlist_array(vdevConfig,
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ZPOOL_CONFIG_CHILDREN,
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&vdevChildren, &numChildren);
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if (result != 0) {
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/* leaf vdev */
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break;
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}
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/*
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* Insert children at the head of the queue to effect a
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* depth first traversal of the tree.
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*/
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m_vdevQueue.insert(m_vdevQueue.begin(), vdevChildren,
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vdevChildren + numChildren);
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}
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return (vdevConfig);
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}
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void
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VdevIterator::Each(VdevCallback_t *callBack, void *callBackArg)
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{
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nvlist_t *vdevConfig;
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Reset();
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while ((vdevConfig = Next()) != NULL) {
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Vdev vdev(m_poolConfig, vdevConfig);
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if (callBack(vdev, callBackArg))
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break;
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}
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}
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nvlist_t *
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VdevIterator::Find(Guid vdevGUID)
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{
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nvlist_t *vdevConfig;
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Reset();
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while ((vdevConfig = Next()) != NULL) {
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Vdev vdev(m_poolConfig, vdevConfig);
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if (vdev.GUID() == vdevGUID)
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return (vdevConfig);
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}
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return (NULL);
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}
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