diff options
Diffstat (limited to 'tools/pvremove.c')
| -rw-r--r-- | tools/pvremove.c | 154 |
1 files changed, 154 insertions, 0 deletions
diff --git a/tools/pvremove.c b/tools/pvremove.c new file mode 100644 index 0000000..a8717e0 --- /dev/null +++ b/tools/pvremove.c @@ -0,0 +1,154 @@ +/* + * Copyright (C) 2002-2004 Sistina Software, Inc. All rights reserved. + * Copyright (C) 2004-2007 Red Hat, Inc. All rights reserved. + * + * This file is part of LVM2. + * + * This copyrighted material is made available to anyone wishing to use, + * modify, copy, or redistribute it subject to the terms and conditions + * of the GNU Lesser General Public License v.2.1. + * + * You should have received a copy of the GNU Lesser General Public License + * along with this program; if not, write to the Free Software Foundation, + * Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + */ + +#include "tools.h" + +const char _really_wipe[] = + "Really WIPE LABELS from physical volume \"%s\" of volume group \"%s\" [y/n]? "; + +/* + * Decide whether it is "safe" to wipe the labels on this device. + * 0 indicates we may not. + */ +static int pvremove_check(struct cmd_context *cmd, const char *name) +{ + struct physical_volume *pv; + struct dm_list mdas; + + dm_list_init(&mdas); + + /* FIXME Check partition type is LVM unless --force is given */ + + /* Is there a pv here already? */ + /* If not, this is an error unless you used -f. */ + if (!(pv = pv_read(cmd, name, &mdas, NULL, 1, 0))) { + if (arg_count(cmd, force_ARG)) + return 1; + log_error("Physical Volume %s not found", name); + return 0; + } + + /* + * If a PV has no MDAs it may appear to be an + * orphan until the metadata is read off + * another PV in the same VG. Detecting this + * means checking every VG by scanning every + * PV on the system. + */ + if (is_orphan(pv) && !dm_list_size(&mdas)) { + if (!scan_vgs_for_pvs(cmd, 0)) { + log_error("Rescan for PVs without metadata areas " + "failed."); + return 0; + } + if (!(pv = pv_read(cmd, name, NULL, NULL, 1, 0))) { + log_error("Failed to read physical volume %s", name); + return 0; + } + } + + /* orphan ? */ + if (is_orphan(pv)) + return 1; + + /* Allow partial & exported VGs to be destroyed. */ + /* we must have -ff to overwrite a non orphan */ + if (arg_count(cmd, force_ARG) < 2) { + log_error("Can't pvremove physical volume \"%s\" of " + "volume group \"%s\" without -ff", name, pv_vg_name(pv)); + return 0; + } + + /* prompt */ + if (!arg_count(cmd, yes_ARG) && + yes_no_prompt(_really_wipe, name, pv_vg_name(pv)) == 'n') { + log_error("%s: physical volume label not removed", name); + return 0; + } + + if (arg_count(cmd, force_ARG)) { + log_warn("WARNING: Wiping physical volume label from " + "%s%s%s%s", name, + !is_orphan(pv) ? " of volume group \"" : "", + !is_orphan(pv) ? pv_vg_name(pv) : "", + !is_orphan(pv) ? "\"" : ""); + } + + return 1; +} + +static int pvremove_single(struct cmd_context *cmd, const char *pv_name, + void *handle __attribute__((unused))) +{ + struct device *dev; + int ret = ECMD_FAILED; + + if (!lock_vol(cmd, VG_ORPHANS, LCK_VG_WRITE)) { + log_error("Can't get lock for orphan PVs"); + return ECMD_FAILED; + } + + if (!pvremove_check(cmd, pv_name)) + goto error; + + if (!(dev = dev_cache_get(pv_name, cmd->filter))) { + log_error("%s: Couldn't find device. Check your filters?", + pv_name); + goto error; + } + + if (!dev_test_excl(dev)) { + /* FIXME Detect whether device-mapper is still using the device */ + log_error("Can't open %s exclusively - not removing. " + "Mounted filesystem?", dev_name(dev)); + goto error; + } + + /* Wipe existing label(s) */ + if (!label_remove(dev)) { + log_error("Failed to wipe existing label(s) on %s", pv_name); + goto error; + } + + log_print("Labels on physical volume \"%s\" successfully wiped", + pv_name); + + ret = ECMD_PROCESSED; + + error: + unlock_vg(cmd, VG_ORPHANS); + + return ret; +} + +int pvremove(struct cmd_context *cmd, int argc, char **argv) +{ + int i, r; + int ret = ECMD_PROCESSED; + + if (!argc) { + log_error("Please enter a physical volume path"); + return EINVALID_CMD_LINE; + } + + for (i = 0; i < argc; i++) { + unescape_colons_and_at_signs(argv[i], NULL, NULL); + r = pvremove_single(cmd, argv[i], NULL); + if (r > ret) + ret = r; + } + + return ret; +} |