From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 21424 invoked by alias); 23 Jul 2009 23:40:50 -0000 Received: (qmail 21410 invoked by uid 9657); 23 Jul 2009 23:40:50 -0000 Date: Thu, 23 Jul 2009 23:40:00 -0000 Message-ID: <20090723234050.21408.qmail@sourceware.org> From: wysochanski@sourceware.org To: lvm-devel@redhat.com, lvm2-cvs@sourceware.org Subject: LVM2/test/api test.c Mailing-List: contact lvm2-cvs-help@sourceware.org; run by ezmlm Precedence: bulk List-Id: List-Subscribe: List-Post: List-Help: , Sender: lvm2-cvs-owner@sourceware.org X-SW-Source: 2009-07/txt/msg00126.txt.bz2 CVSROOT: /cvs/lvm2 Module name: LVM2 Changes by: wysochanski@sourceware.org 2009-07-23 23:40:50 Modified files: test/api : test.c Log message: Update test/api/test.c for simple tests involving pv/vg/lv name/uuid attributes. Tests the following APIs: - lvm_{pv|vg|lv}_get_{name|uuid}() - lvm_{lvs|pvs}_in_vg() Example: lvm> vg_open VolGroup00 Success opening vg VolGroup00 lvm> vg_list_lvs VolGroup00 LVs in VG VolGroup00: VolGroup00/LogVol00 (bFO4EU-UaDu-iuMm-N6BA-xcZc-nm3u-J5K5lu) VolGroup00/LogVol01 (BHGsPK-PwzY-kye0-MEWa-a67z-BiYE-03ZjwM) lvm> vg_list_pvs VolGroup00 PVs in VG VolGroup00: /dev/sda2 (Be91pt-CqT0-4YJE-nGI6-Oisz-hy0N-l9CHgn) Signed-off-by: Dave Wysochanski Acked-by: Thomas Woerner Patches: http://sourceware.org/cgi-bin/cvsweb.cgi/LVM2/test/api/test.c.diff?cvsroot=lvm2&r1=1.2&r2=1.3 --- LVM2/test/api/test.c 2009/02/24 13:03:45 1.2 +++ LVM2/test/api/test.c 2009/07/23 23:40:50 1.3 @@ -1,5 +1,5 @@ /* - * Copyright (C) 2001-2004 Sistina Software, Inc. All rights reserved. + * Copyright (C) 2001-2004 Sistina Software, Inc. All rights reserved. * Copyright (C) 2004-2009 Red Hat, Inc. All rights reserved. * * This file is part of LVM2. @@ -29,7 +29,7 @@ while (*b && isspace(*b)) b++; - if ((!*b) || (*b == '#')) + if ((!*b) || ((*argc == 0)&&(*b == '#'))) break; e = b; @@ -48,11 +48,204 @@ return *argc; } +static void _show_help(void) +{ + printf("'vg_list_pvs vgname': " + "List the PVs that exist in VG vgname\n"); + printf("'vg_list_lvs vgname': " + "List the LVs that exist in VG vgname\n"); + printf("'vgs_open': " + "List the VGs that are currently open\n"); + printf("'vgs': " + "List all VGs known to the system\n"); + printf("'vg_open vgname ['r' | 'w']': " + "Issue a lvm_vg_open() API call on VG 'vgname'\n"); + printf("'vg_close vgname': " + "Issue a lvm_vg_close() API call on VG 'vgname'\n"); + printf("'quit': exit the program\n"); +} + +static struct dm_hash_table *_vgid_hash = NULL; +static struct dm_hash_table *_vgname_hash = NULL; +static struct dm_hash_table *_pvname_hash = NULL; +static struct dm_hash_table *_lvname_hash = NULL; + +static void _hash_destroy_single(struct dm_hash_table **htable) +{ + if (htable && *htable) { + dm_hash_destroy(*htable); + *htable = NULL; + } +} + +static void _hash_destroy(void) +{ + _hash_destroy_single(&_vgname_hash); + _hash_destroy_single(&_vgid_hash); + _hash_destroy_single(&_pvname_hash); + _hash_destroy_single(&_lvname_hash); +} + +static int _hash_create(void) +{ + if (!(_vgname_hash = dm_hash_create(128))) + return 0; + if (!(_pvname_hash = dm_hash_create(128))) { + _hash_destroy_single(&_vgname_hash); + return 0; + } + if (!(_lvname_hash = dm_hash_create(128))) { + _hash_destroy_single(&_vgname_hash); + _hash_destroy_single(&_pvname_hash); + return 0; + } + if (!(_vgid_hash = dm_hash_create(128))) { + _hash_destroy_single(&_vgname_hash); + _hash_destroy_single(&_pvname_hash); + _hash_destroy_single(&_lvname_hash); + return 0; + } + return 1; +} + +static vg_t *_lookup_vg_by_name(char **argv, int argc) +{ + vg_t *vg; + + if (argc < 2) { + printf ("Please enter vg_name\n"); + return NULL; + } + if (!(vg = dm_hash_lookup(_vgid_hash, argv[1])) && + !(vg = dm_hash_lookup(_vgname_hash, argv[1]))) { + printf ("Can't find %s in open VGs - run vg_open first\n", + argv[1]); + return NULL; + } + return vg; +} + +static void _vg_open(char **argv, int argc, lvm_t libh) +{ + vg_t *vg; + struct dm_list *lvs; + struct lvm_lv_list *lvl; + struct dm_list *pvs; + struct lvm_pv_list *pvl; + + if (argc < 2) { + printf ("Please enter vg_name\n"); + return; + } + if ((vg = dm_hash_lookup(_vgid_hash, argv[1])) || + (vg = dm_hash_lookup(_vgname_hash, argv[1]))) { + printf ("VG already open\n"); + return; + } + /* FIXME: allow different open modes */ + vg = lvm_vg_open(libh, argv[1], "r", 0); + if (!vg || !lvm_vg_get_name(vg)) { + printf("Error opening %s\n", argv[1]); + return; + } + + printf("Success opening vg %s\n", argv[1]); + dm_hash_insert(_vgname_hash, lvm_vg_get_name(vg), vg); + dm_hash_insert(_vgid_hash, lvm_vg_get_uuid(vg), vg); + + /* + * Add the LVs and PVs into the hashes for lookups + */ + lvs = lvm_vg_list_lvs(vg); + dm_list_iterate_items(lvl, lvs) { + /* Concatenate VG name with LV name */ + dm_hash_insert(_lvname_hash, lvm_lv_get_name(lvl->lv), lvl->lv); + } + pvs = lvm_vg_list_pvs(vg); + dm_list_iterate_items(pvl, pvs) { + dm_hash_insert(_pvname_hash, lvm_pv_get_name(pvl->pv), pvl->pv); + } +} + +static void _vg_close(char **argv, int argc) +{ + vg_t *vg; + + if (argc < 2) { + printf ("Please enter vg_name\n"); + return; + } + while((vg = dm_hash_lookup(_vgname_hash, argv[1]))) { + dm_hash_remove(_vgid_hash, lvm_vg_get_uuid(vg)); + dm_hash_remove(_vgname_hash, lvm_vg_get_name(vg)); + lvm_vg_close(vg); + } + while((vg = dm_hash_lookup(_vgid_hash, argv[1]))) { + dm_hash_remove(_vgid_hash, lvm_vg_get_uuid(vg)); + dm_hash_remove(_vgname_hash, lvm_vg_get_name(vg)); + lvm_vg_close(vg); + } +} + +static void _show_one_vg(vg_t *vg) +{ + /* FIXME: uuid is not null terminated */ + printf("%s (%s): mode = %s\n", lvm_vg_get_name(vg), + lvm_vg_get_uuid(vg), "READ"); +} + +static void _list_open_vgs(void) +{ + dm_hash_iter(_vgid_hash, (dm_hash_iterate_fn) _show_one_vg); +} + +static void _pvs_in_vg(char **argv, int argc) +{ + struct dm_list *pvs; + struct lvm_pv_list *pvl; + vg_t *vg; + + if (!(vg = _lookup_vg_by_name(argv, argc))) + return; + pvs = lvm_vg_list_pvs(vg); + if (!pvs || dm_list_empty(pvs)) { + printf("No PVs in VG %s\n", lvm_vg_get_name(vg)); + return; + } + printf("PVs in VG %s:\n", lvm_vg_get_name(vg)); + dm_list_iterate_items(pvl, pvs) { + printf("%s (%s)\n", + lvm_pv_get_name(pvl->pv), lvm_pv_get_uuid(pvl->pv)); + } +} + +static void _lvs_in_vg(char **argv, int argc) +{ + struct dm_list *lvs; + struct lvm_lv_list *lvl; + vg_t *vg; + + if (!(vg = _lookup_vg_by_name(argv, argc))) + return; + lvs = lvm_vg_list_lvs(vg); + if (!lvs || dm_list_empty(lvs)) { + printf("No LVs in VG %s\n", lvm_vg_get_name(vg)); + return; + } + printf("LVs in VG %s:\n", lvm_vg_get_name(vg)); + dm_list_iterate_items(lvl, lvs) { + printf("%s/%s (%s)\n", lvm_vg_get_name(vg), + lvm_lv_get_name(lvl->lv), lvm_lv_get_uuid(lvl->lv)); + } +} + static int lvmapi_test_shell(lvm_t libh) { - int argc, i; + int argc; char *input = NULL, *args[MAX_ARGS], **argv; + _hash_create(); + argc=0; while (1) { free(input); input = readline("lvm> "); @@ -86,17 +279,28 @@ printf("Exiting.\n"); break; } else if (!strcmp(argv[0], "?") || !strcmp(argv[0], "help")) { - printf("No commands defined\n"); - } else if (!strcmp(argv[0], "scan")) { - for (i=1; i < argc; i++) - printf("Scan a path!\n"); + _show_help(); + } else if (!strcmp(argv[0], "vg_open")) { + _vg_open(argv, argc, libh); + } else if (!strcmp(argv[0], "vg_close")) { + _vg_close(argv, argc); + } else if (!strcmp(argv[0], "vgs_open")) { + _list_open_vgs(); + } else if (!strcmp(argv[0], "vg_list_pvs")) { + _pvs_in_vg(argv, argc); + } else if (!strcmp(argv[0], "vg_list_lvs")) { + _lvs_in_vg(argv, argc); + } else { + printf ("Unrecognized command %s\n", argv[0]); } } + dm_hash_iter(_vgname_hash, (dm_hash_iterate_fn) lvm_vg_close); + _hash_destroy(); free(input); return 0; } - + int main (int argc, char *argv[]) { lvm_t libh;