From owner-svn-src-vendor@FreeBSD.ORG Sat Dec 6 00:14:39 2014 Return-Path: Delivered-To: svn-src-vendor@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [8.8.178.115]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by hub.freebsd.org (Postfix) with ESMTPS id DDAC990A; Sat, 6 Dec 2014 00:14:39 +0000 (UTC) Received: from svn.freebsd.org (svn.freebsd.org [IPv6:2001:1900:2254:2068::e6a:0]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client did not present a certificate) by mx1.freebsd.org (Postfix) with ESMTPS id BFD37DAF; Sat, 6 Dec 2014 00:14:39 +0000 (UTC) Received: from svn.freebsd.org ([127.0.1.70]) by svn.freebsd.org (8.14.9/8.14.9) with ESMTP id sB60EdTg029265; Sat, 6 Dec 2014 00:14:39 GMT (envelope-from delphij@FreeBSD.org) Received: (from delphij@localhost) by svn.freebsd.org (8.14.9/8.14.9/Submit) id sB60Ed5P029262; Sat, 6 Dec 2014 00:14:39 GMT (envelope-from delphij@FreeBSD.org) Message-Id: <201412060014.sB60Ed5P029262@svn.freebsd.org> X-Authentication-Warning: svn.freebsd.org: delphij set sender to delphij@FreeBSD.org using -f From: Xin LI Date: Sat, 6 Dec 2014 00:14:39 +0000 (UTC) To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-vendor@freebsd.org Subject: svn commit: r275540 - in vendor-sys/illumos/dist/uts/common/fs/zfs: . sys X-SVN-Group: vendor-sys MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-BeenThere: svn-src-vendor@freebsd.org X-Mailman-Version: 2.1.18-1 Precedence: list List-Id: SVN commit messages for the vendor work area tree List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sat, 06 Dec 2014 00:14:40 -0000 Author: delphij Date: Sat Dec 6 00:14:38 2014 New Revision: 275540 URL: https://svnweb.freebsd.org/changeset/base/275540 Log: 5213 panic in metaslab_init due to space_map_open returning ENXIO Reviewed by: Matthew Ahrens Reviewed by: George Wilson Reviewed by: Bayard Bell Reviewed by: Brian Behlendorf Reviewed by: Steven Hartland Approved by: Dan McDonald Author: Prakash Surya illumos/illumos-gate@1e9bd7ec42f2d3bf854c2da35310901194833267 Modified: vendor-sys/illumos/dist/uts/common/fs/zfs/metaslab.c vendor-sys/illumos/dist/uts/common/fs/zfs/sys/metaslab.h vendor-sys/illumos/dist/uts/common/fs/zfs/vdev.c Modified: vendor-sys/illumos/dist/uts/common/fs/zfs/metaslab.c ============================================================================== --- vendor-sys/illumos/dist/uts/common/fs/zfs/metaslab.c Sat Dec 6 00:13:56 2014 (r275539) +++ vendor-sys/illumos/dist/uts/common/fs/zfs/metaslab.c Sat Dec 6 00:14:38 2014 (r275540) @@ -1208,28 +1208,36 @@ metaslab_unload(metaslab_t *msp) msp->ms_weight &= ~METASLAB_ACTIVE_MASK; } -metaslab_t * -metaslab_init(metaslab_group_t *mg, uint64_t id, uint64_t object, uint64_t txg) +int +metaslab_init(metaslab_group_t *mg, uint64_t id, uint64_t object, uint64_t txg, + metaslab_t **msp) { vdev_t *vd = mg->mg_vd; objset_t *mos = vd->vdev_spa->spa_meta_objset; - metaslab_t *msp; + metaslab_t *ms; + int error; - msp = kmem_zalloc(sizeof (metaslab_t), KM_SLEEP); - mutex_init(&msp->ms_lock, NULL, MUTEX_DEFAULT, NULL); - cv_init(&msp->ms_load_cv, NULL, CV_DEFAULT, NULL); - msp->ms_id = id; - msp->ms_start = id << vd->vdev_ms_shift; - msp->ms_size = 1ULL << vd->vdev_ms_shift; + ms = kmem_zalloc(sizeof (metaslab_t), KM_SLEEP); + mutex_init(&ms->ms_lock, NULL, MUTEX_DEFAULT, NULL); + cv_init(&ms->ms_load_cv, NULL, CV_DEFAULT, NULL); + ms->ms_id = id; + ms->ms_start = id << vd->vdev_ms_shift; + ms->ms_size = 1ULL << vd->vdev_ms_shift; /* * We only open space map objects that already exist. All others * will be opened when we finally allocate an object for it. */ if (object != 0) { - VERIFY0(space_map_open(&msp->ms_sm, mos, object, msp->ms_start, - msp->ms_size, vd->vdev_ashift, &msp->ms_lock)); - ASSERT(msp->ms_sm != NULL); + error = space_map_open(&ms->ms_sm, mos, object, ms->ms_start, + ms->ms_size, vd->vdev_ashift, &ms->ms_lock); + + if (error != 0) { + kmem_free(ms, sizeof (metaslab_t)); + return (error); + } + + ASSERT(ms->ms_sm != NULL); } /* @@ -1239,11 +1247,11 @@ metaslab_init(metaslab_group_t *mg, uint * addition of new space; and for debugging, it ensures that we'd * data fault on any attempt to use this metaslab before it's ready. */ - msp->ms_tree = range_tree_create(&metaslab_rt_ops, msp, &msp->ms_lock); - metaslab_group_add(mg, msp); + ms->ms_tree = range_tree_create(&metaslab_rt_ops, ms, &ms->ms_lock); + metaslab_group_add(mg, ms); - msp->ms_fragmentation = metaslab_fragmentation(msp); - msp->ms_ops = mg->mg_class->mc_ops; + ms->ms_fragmentation = metaslab_fragmentation(ms); + ms->ms_ops = mg->mg_class->mc_ops; /* * If we're opening an existing pool (txg == 0) or creating @@ -1252,25 +1260,27 @@ metaslab_init(metaslab_group_t *mg, uint * does not become available until after this txg has synced. */ if (txg <= TXG_INITIAL) - metaslab_sync_done(msp, 0); + metaslab_sync_done(ms, 0); /* * If metaslab_debug_load is set and we're initializing a metaslab * that has an allocated space_map object then load the its space * map so that can verify frees. */ - if (metaslab_debug_load && msp->ms_sm != NULL) { - mutex_enter(&msp->ms_lock); - VERIFY0(metaslab_load(msp)); - mutex_exit(&msp->ms_lock); + if (metaslab_debug_load && ms->ms_sm != NULL) { + mutex_enter(&ms->ms_lock); + VERIFY0(metaslab_load(ms)); + mutex_exit(&ms->ms_lock); } if (txg != 0) { vdev_dirty(vd, 0, NULL, txg); - vdev_dirty(vd, VDD_METASLAB, msp, txg); + vdev_dirty(vd, VDD_METASLAB, ms, txg); } - return (msp); + *msp = ms; + + return (0); } void Modified: vendor-sys/illumos/dist/uts/common/fs/zfs/sys/metaslab.h ============================================================================== --- vendor-sys/illumos/dist/uts/common/fs/zfs/sys/metaslab.h Sat Dec 6 00:13:56 2014 (r275539) +++ vendor-sys/illumos/dist/uts/common/fs/zfs/sys/metaslab.h Sat Dec 6 00:14:38 2014 (r275540) @@ -42,8 +42,8 @@ typedef struct metaslab_ops { extern metaslab_ops_t *zfs_metaslab_ops; -metaslab_t *metaslab_init(metaslab_group_t *, uint64_t, - uint64_t, uint64_t); +int metaslab_init(metaslab_group_t *, uint64_t, uint64_t, uint64_t, + metaslab_t **); void metaslab_fini(metaslab_t *); void metaslab_load_wait(metaslab_t *); Modified: vendor-sys/illumos/dist/uts/common/fs/zfs/vdev.c ============================================================================== --- vendor-sys/illumos/dist/uts/common/fs/zfs/vdev.c Sat Dec 6 00:13:56 2014 (r275539) +++ vendor-sys/illumos/dist/uts/common/fs/zfs/vdev.c Sat Dec 6 00:14:38 2014 (r275540) @@ -857,7 +857,11 @@ vdev_metaslab_init(vdev_t *vd, uint64_t if (error) return (error); } - vd->vdev_ms[m] = metaslab_init(vd->vdev_mg, m, object, txg); + + error = metaslab_init(vd->vdev_mg, m, object, txg, + &(vd->vdev_ms[m])); + if (error) + return (error); } if (txg == 0)