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From: wysochanski@sourceware.org To: lvm-devel@redhat.com, lvm2-cvs@sourceware.org Subject: LVM2/lib format1/format1.c format_pool/format_ ... Date: Mon, 27 Jul 2009 17:43:00 -0000 [thread overview] Message-ID: <20090727174341.22002.qmail@sourceware.org> (raw) CVSROOT: /cvs/lvm2 Module name: LVM2 Changes by: wysochanski@sourceware.org 2009-07-27 17:43:40 Modified files: lib/format1 : format1.c lib/format_pool: format_pool.c lib/format_text: import_vsn1.c lib/metadata : metadata-exported.h metadata.c Log message: Add vg_reduce to metadata.c and metadata-exported.h This function behaves a little bit different than vg_reduce_single, because it allowes to remove even the latest pv. This has been done to be consistent to lvm_vg_create, which creates an empty vg. removed_pvs has been added to the volume_group struct. vg_reduce adds remove pvs to this list to be able to commit the changes for the pvs in lvm_vg_comm in liblvm2app. Initialize removed_pvs list in format-specific volume_group constructors. Ideally, we should have a base constructor here that initializes the general non-format specific members of struct volume_group. But until then, there are multiple places to initialize these members. Maybe a better patch would be a base constructor patch for struct volume_group. That is more work though. Signed-off-by: Dave Wysochanski <dwysocha@redhat.com> Signed-off-by: Thomas Woerner <twoerner@redhat.com> Author: Dave Wysochanski <dwysocha@redhat.com> Patches: http://sourceware.org/cgi-bin/cvsweb.cgi/LVM2/lib/format1/format1.c.diff?cvsroot=lvm2&r1=1.112&r2=1.113 http://sourceware.org/cgi-bin/cvsweb.cgi/LVM2/lib/format_pool/format_pool.c.diff?cvsroot=lvm2&r1=1.23&r2=1.24 http://sourceware.org/cgi-bin/cvsweb.cgi/LVM2/lib/format_text/import_vsn1.c.diff?cvsroot=lvm2&r1=1.63&r2=1.64 http://sourceware.org/cgi-bin/cvsweb.cgi/LVM2/lib/metadata/metadata-exported.h.diff?cvsroot=lvm2&r1=1.102&r2=1.103 http://sourceware.org/cgi-bin/cvsweb.cgi/LVM2/lib/metadata/metadata.c.diff?cvsroot=lvm2&r1=1.269&r2=1.270 --- LVM2/lib/format1/format1.c 2009/04/10 09:59:18 1.112 +++ LVM2/lib/format1/format1.c 2009/07/27 17:43:39 1.113 @@ -132,6 +132,7 @@ dm_list_init(&vg->pvs); dm_list_init(&vg->lvs); dm_list_init(&vg->tags); + dm_list_init(&vg->removed_pvs); if (!_check_vgs(pvs)) goto_bad; --- LVM2/lib/format_pool/format_pool.c 2009/05/13 21:22:57 1.23 +++ LVM2/lib/format_pool/format_pool.c 2009/07/27 17:43:40 1.24 @@ -124,6 +124,7 @@ dm_list_init(&vg->pvs); dm_list_init(&vg->lvs); dm_list_init(&vg->tags); + dm_list_init(&vg->removed_pvs); if (!import_pool_vg(vg, smem, pds)) return_NULL; --- LVM2/lib/format_text/import_vsn1.c 2009/07/09 11:29:41 1.63 +++ LVM2/lib/format_text/import_vsn1.c 2009/07/27 17:43:40 1.64 @@ -753,6 +753,7 @@ dm_list_init(&vg->lvs); dm_list_init(&vg->tags); + dm_list_init(&vg->removed_pvs); /* Optional tags */ if ((cn = find_config_node(vgn, "tags")) && --- LVM2/lib/metadata/metadata-exported.h 2009/07/26 12:41:09 1.102 +++ LVM2/lib/metadata/metadata-exported.h 2009/07/27 17:43:40 1.103 @@ -243,6 +243,12 @@ */ /* + * List of removed physical volumes by pvreduce. + * They have to get cleared on vg_commit. + */ + struct dm_list removed_pvs; + + /* * Store result of the last vg_read(). * 0 for success else appropriate FAILURE_* bits set. */ @@ -437,6 +443,7 @@ int vg_rename(struct cmd_context *cmd, struct volume_group *vg, const char *new_name); int vg_extend(struct volume_group *vg, int pv_count, char **pv_names); +int vg_reduce(struct volume_group *vg, char *pv_name); int vg_set_extent_size(vg_t *vg, uint32_t new_extent_size); int vg_set_max_lv(vg_t *vg, uint32_t max_lv); int vg_set_max_pv(vg_t *vg, uint32_t max_pv); --- LVM2/lib/metadata/metadata.c 2009/07/26 12:41:36 1.269 +++ LVM2/lib/metadata/metadata.c 2009/07/27 17:43:40 1.270 @@ -532,6 +532,54 @@ return 0; } +/* FIXME: use this inside vgreduce_single? */ +int vg_reduce(struct volume_group *vg, char *pv_name) +{ + struct physical_volume *pv; + struct pv_list *pvl; + + if (_vg_bad_status_bits(vg, RESIZEABLE_VG)) + return 0; + + if (!archive(vg)) + goto bad; + + /* remove each pv */ + if (!(pvl = find_pv_in_vg(vg, pv_name))) { + log_error("Physical volume %s not in volume group %s.", + pv_name, vg->name); + goto bad; + } + + pv = pvl->pv; + + if (pv_pe_alloc_count(pv)) { + log_error("Physical volume %s still in use.", + pv_name); + goto bad; + } + + if (!dev_get_size(pv_dev(pv), &pv->size)) { + log_error("%s: Couldn't get size.", pv_name); + goto bad; + } + + vg->pv_count--; + vg->free_count -= pv_pe_count(pv) - pv_pe_alloc_count(pv); + vg->extent_count -= pv_pe_count(pv); + + /* add pv to the remove_pvs list */ + dm_list_del(&pvl->list); + dm_list_add(&vg->removed_pvs, &pvl->list); + + return 1; + + bad: + log_error("Unable to remove physical volume '%s' from " + "volume group '%s'.", pv_name, vg->name); + return 0; +} + const char *strip_dir(const char *vg_name, const char *dev_dir) { size_t len = strlen(dev_dir); @@ -660,6 +708,9 @@ dm_list_init(&vg->tags); + /* initialize removed_pvs list */ + dm_list_init(&vg->removed_pvs); + if (!(vg->fid = cmd->fmt->ops->create_instance(cmd->fmt, vg_name, NULL, NULL))) { log_error("Failed to create format instance"); @@ -2165,6 +2216,7 @@ dm_list_init(&vg->pvs); dm_list_init(&vg->lvs); dm_list_init(&vg->tags); + dm_list_init(&vg->removed_pvs); vg->vgmem = mem; vg->cmd = cmd; if (!(vg->name = dm_pool_strdup(mem, orphan_vgname))) {
next reply other threads:[~2009-07-27 17:43 UTC|newest] Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top 2009-07-27 17:43 wysochanski [this message] 2010-06-28 20:33 wysochanski 2010-06-29 14:52 wysochanski 2011-02-21 12:05 prajnoha 2011-02-21 12:20 prajnoha 2012-02-15 1:44 mornfall
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