diff options
Diffstat (limited to 'grub-core/disk/lvm.c')
| -rw-r--r-- | grub-core/disk/lvm.c | 896 |
1 files changed, 896 insertions, 0 deletions
diff --git a/grub-core/disk/lvm.c b/grub-core/disk/lvm.c new file mode 100644 index 0000000..206e3e2 --- /dev/null +++ b/grub-core/disk/lvm.c @@ -0,0 +1,896 @@ +/* lvm.c - module to read Logical Volumes. */ +/* + * GRUB -- GRand Unified Bootloader + * Copyright (C) 2006,2007,2008,2009 Free Software Foundation, Inc. + * + * GRUB is free software: you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation, either version 3 of the License, or + * (at your option) any later version. + * + * GRUB is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with GRUB. If not, see <http://www.gnu.org/licenses/>. + */ + +#include <grub/dl.h> +#include <grub/disk.h> +#include <grub/mm.h> +#include <grub/err.h> +#include <grub/misc.h> +#include <grub/lvm.h> + +#ifdef GRUB_UTIL +#include <grub/emu/misc.h> +#endif + +GRUB_MOD_LICENSE ("GPLv3+"); + +static struct grub_lvm_vg *vg_list; +static int lv_count; + + +/* Go the string STR and return the number after STR. *P will point + at the number. In case STR is not found, *P will be NULL and the + return value will be 0. */ +static int +grub_lvm_getvalue (char **p, char *str) +{ + *p = grub_strstr (*p, str); + if (! *p) + return 0; + *p += grub_strlen (str); + return grub_strtoul (*p, NULL, 10); +} + +#if 0 +static int +grub_lvm_checkvalue (char **p, char *str, char *tmpl) +{ + int tmpllen = grub_strlen (tmpl); + *p = grub_strstr (*p, str); + if (! *p) + return 0; + *p += grub_strlen (str); + if (**p != '"') + return 0; + return (grub_memcmp (*p + 1, tmpl, tmpllen) == 0 && (*p)[tmpllen + 1] == '"'); +} +#endif + +static int +grub_lvm_check_flag (char *p, char *str, char *flag) +{ + int len_str = grub_strlen (str), len_flag = grub_strlen (flag); + while (1) + { + char *q; + p = grub_strstr (p, str); + if (! p) + return 0; + p += len_str; + if (grub_memcmp (p, " = [", sizeof (" = [") - 1) != 0) + continue; + q = p + sizeof (" = [") - 1; + while (1) + { + while (grub_isspace (*q)) + q++; + if (*q != '"') + return 0; + q++; + if (grub_memcmp (q, flag, len_flag) == 0 && q[len_flag] == '"') + return 1; + while (*q != '"') + q++; + q++; + if (*q == ']') + return 0; + q++; + } + } +} + +static int +grub_lvm_iterate (int (*hook) (const char *name)) +{ + struct grub_lvm_vg *vg; + for (vg = vg_list; vg; vg = vg->next) + { + struct grub_lvm_lv *lv; + if (vg->lvs) + for (lv = vg->lvs; lv; lv = lv->next) + if (lv->visible && hook (lv->name)) + return 1; + } + + return 0; +} + +#ifdef GRUB_UTIL +static grub_disk_memberlist_t +grub_lvm_memberlist (grub_disk_t disk) +{ + struct grub_lvm_lv *lv = disk->data; + grub_disk_memberlist_t list = NULL, tmp; + struct grub_lvm_pv *pv; + + if (lv->vg->pvs) + for (pv = lv->vg->pvs; pv; pv = pv->next) + { + if (!pv->disk) + grub_util_error ("Couldn't find PV %s. Check your device.map", + pv->name); + tmp = grub_malloc (sizeof (*tmp)); + tmp->disk = pv->disk; + tmp->next = list; + list = tmp; + } + + return list; +} +#endif + +static grub_err_t +grub_lvm_open (const char *name, grub_disk_t disk) +{ + struct grub_lvm_vg *vg; + struct grub_lvm_lv *lv = NULL; + for (vg = vg_list; vg; vg = vg->next) + { + if (vg->lvs) + for (lv = vg->lvs; lv; lv = lv->next) + if (! grub_strcmp (lv->name, name)) + break; + + if (lv) + break; + } + + if (! lv) + return grub_error (GRUB_ERR_UNKNOWN_DEVICE, "unknown LVM device %s", name); + + disk->id = lv->number; + disk->data = lv; + disk->total_sectors = lv->size; + + return 0; +} + +static void +grub_lvm_close (grub_disk_t disk __attribute ((unused))) +{ + return; +} + +static grub_err_t +read_lv (struct grub_lvm_lv *lv, grub_disk_addr_t sector, + grub_size_t size, char *buf); + +static grub_err_t +read_node (const struct grub_lvm_node *node, grub_disk_addr_t sector, + grub_size_t size, char *buf) +{ + /* Check whether we actually know the physical volume we want to + read from. */ + if (node->pv) + { + if (node->pv->disk) + return grub_disk_read (node->pv->disk, sector + node->pv->start, 0, + size << GRUB_DISK_SECTOR_BITS, buf); + else + return grub_error (GRUB_ERR_UNKNOWN_DEVICE, + "physical volume %s not found", node->pv->name); + + } + if (node->lv) + return read_lv (node->lv, sector, size, buf); + return grub_error (GRUB_ERR_UNKNOWN_DEVICE, "unknown node '%s'", node->name); +} + +static grub_err_t +read_lv (struct grub_lvm_lv *lv, grub_disk_addr_t sector, + grub_size_t size, char *buf) +{ + grub_err_t err = 0; + struct grub_lvm_vg *vg = lv->vg; + struct grub_lvm_segment *seg = lv->segments; + struct grub_lvm_node *node; + grub_uint64_t offset; + grub_uint64_t extent; + unsigned int i; + + if (!lv) + return grub_error (GRUB_ERR_UNKNOWN_DEVICE, "unknown volume"); + + extent = grub_divmod64 (sector, vg->extent_size, NULL); + + /* Find the right segment. */ + for (i = 0; i < lv->segment_count; i++) + { + if ((seg->start_extent <= extent) + && ((seg->start_extent + seg->extent_count) > extent)) + { + break; + } + + seg++; + } + + if (i == lv->segment_count) + return grub_error (GRUB_ERR_READ_ERROR, "incorrect segment"); + + switch (seg->type) + { + case GRUB_LVM_STRIPED: + if (seg->node_count == 1) + { + /* This segment is linear, so that's easy. We just need to find + out the offset in the physical volume and read SIZE bytes + from that. */ + struct grub_lvm_node *stripe = seg->nodes; + grub_uint64_t seg_offset; /* Offset of the segment in PV device. */ + + node = stripe; + seg_offset = ((grub_uint64_t) stripe->start + * (grub_uint64_t) vg->extent_size); + + offset = sector - ((grub_uint64_t) seg->start_extent + * (grub_uint64_t) vg->extent_size) + seg_offset; + } + else + { + /* This is a striped segment. We have to find the right PV + similar to RAID0. */ + struct grub_lvm_node *stripe = seg->nodes; + grub_uint32_t a, b; + grub_uint64_t seg_offset; /* Offset of the segment in PV device. */ + unsigned int stripenr; + + offset = sector - ((grub_uint64_t) seg->start_extent + * (grub_uint64_t) vg->extent_size); + + a = grub_divmod64 (offset, seg->stripe_size, NULL); + grub_divmod64 (a, seg->node_count, &stripenr); + + a = grub_divmod64 (offset, seg->stripe_size * seg->node_count, NULL); + grub_divmod64 (offset, seg->stripe_size, &b); + offset = a * seg->stripe_size + b; + + stripe += stripenr; + node = stripe; + + seg_offset = ((grub_uint64_t) stripe->start + * (grub_uint64_t) vg->extent_size); + + offset += seg_offset; + } + return read_node (node, offset, size, buf); + case GRUB_LVM_MIRROR: + i = 0; + while (1) + { + err = read_node (&seg->nodes[i], sector, size, buf); + if (!err) + return err; + if (++i >= seg->node_count) + return err; + grub_errno = GRUB_ERR_NONE; + } + } + return grub_error (GRUB_ERR_IO, "unknown LVM segment"); +} + +static grub_err_t +grub_lvm_read (grub_disk_t disk, grub_disk_addr_t sector, + grub_size_t size, char *buf) +{ + return read_lv (disk->data, sector, size, buf); +} + +static grub_err_t +grub_lvm_write (grub_disk_t disk __attribute ((unused)), + grub_disk_addr_t sector __attribute ((unused)), + grub_size_t size __attribute ((unused)), + const char *buf __attribute ((unused))) +{ + return GRUB_ERR_NOT_IMPLEMENTED_YET; +} + +static int +grub_lvm_scan_device (const char *name) +{ + grub_err_t err; + grub_disk_t disk; + grub_uint64_t mda_offset, mda_size; + char buf[GRUB_LVM_LABEL_SIZE]; + char vg_id[GRUB_LVM_ID_STRLEN+1]; + char pv_id[GRUB_LVM_ID_STRLEN+1]; + char *metadatabuf, *p, *q, *vgname; + struct grub_lvm_label_header *lh = (struct grub_lvm_label_header *) buf; + struct grub_lvm_pv_header *pvh; + struct grub_lvm_disk_locn *dlocn; + struct grub_lvm_mda_header *mdah; + struct grub_lvm_raw_locn *rlocn; + unsigned int i, j, vgname_len; + struct grub_lvm_vg *vg; + struct grub_lvm_pv *pv; + +#ifdef GRUB_UTIL + grub_util_info ("scanning %s for LVM", name); +#endif + + disk = grub_disk_open (name); + if (!disk) + { + if (grub_errno == GRUB_ERR_OUT_OF_RANGE) + grub_errno = GRUB_ERR_NONE; + return 0; + } + + /* Search for label. */ + for (i = 0; i < GRUB_LVM_LABEL_SCAN_SECTORS; i++) + { + err = grub_disk_read (disk, i, 0, sizeof(buf), buf); + if (err) + goto fail; + + if ((! grub_strncmp ((char *)lh->id, GRUB_LVM_LABEL_ID, + sizeof (lh->id))) + && (! grub_strncmp ((char *)lh->type, GRUB_LVM_LVM2_LABEL, + sizeof (lh->type)))) + break; + } + + /* Return if we didn't find a label. */ + if (i == GRUB_LVM_LABEL_SCAN_SECTORS) + { +#ifdef GRUB_UTIL + grub_util_info ("no LVM signature found"); +#endif + goto fail; + } + + pvh = (struct grub_lvm_pv_header *) (buf + grub_le_to_cpu32(lh->offset_xl)); + + for (i = 0, j = 0; i < GRUB_LVM_ID_LEN; i++) + { + pv_id[j++] = pvh->pv_uuid[i]; + if ((i != 1) && (i != 29) && (i % 4 == 1)) + pv_id[j++] = '-'; + } + pv_id[j] = '\0'; + + dlocn = pvh->disk_areas_xl; + + dlocn++; + /* Is it possible to have multiple data/metadata areas? I haven't + seen devices that have it. */ + if (dlocn->offset) + { + grub_error (GRUB_ERR_NOT_IMPLEMENTED_YET, + "we don't support multiple LVM data areas"); + +#ifdef GRUB_UTIL + grub_util_info ("we don't support multiple LVM data areas\n"); +#endif + goto fail; + } + + dlocn++; + mda_offset = grub_le_to_cpu64 (dlocn->offset); + mda_size = grub_le_to_cpu64 (dlocn->size); + + /* It's possible to have multiple copies of metadata areas, we just use the + first one. */ + + /* Allocate buffer space for the circular worst-case scenario. */ + metadatabuf = grub_malloc (2 * mda_size); + if (! metadatabuf) + goto fail; + + err = grub_disk_read (disk, 0, mda_offset, mda_size, metadatabuf); + if (err) + goto fail2; + + mdah = (struct grub_lvm_mda_header *) metadatabuf; + if ((grub_strncmp ((char *)mdah->magic, GRUB_LVM_FMTT_MAGIC, + sizeof (mdah->magic))) + || (grub_le_to_cpu32 (mdah->version) != GRUB_LVM_FMTT_VERSION)) + { + grub_error (GRUB_ERR_NOT_IMPLEMENTED_YET, + "unknown LVM metadata header"); +#ifdef GRUB_UTIL + grub_util_info ("unknown LVM metadata header\n"); +#endif + goto fail2; + } + + rlocn = mdah->raw_locns; + if (grub_le_to_cpu64 (rlocn->offset) + grub_le_to_cpu64 (rlocn->size) > + grub_le_to_cpu64 (mdah->size)) + { + /* Metadata is circular. Copy the wrap in place. */ + grub_memcpy (metadatabuf + mda_size, + metadatabuf + GRUB_LVM_MDA_HEADER_SIZE, + grub_le_to_cpu64 (rlocn->offset) + + grub_le_to_cpu64 (rlocn->size) - + grub_le_to_cpu64 (mdah->size)); + } + p = q = metadatabuf + grub_le_to_cpu64 (rlocn->offset); + + while (*q != ' ' && q < metadatabuf + mda_size) + q++; + + if (q == metadatabuf + mda_size) + { +#ifdef GRUB_UTIL + grub_util_info ("error parsing metadata\n"); +#endif + goto fail2; + } + + vgname_len = q - p; + vgname = grub_malloc (vgname_len + 1); + if (!vgname) + goto fail2; + + grub_memcpy (vgname, p, vgname_len); + vgname[vgname_len] = '\0'; + + p = grub_strstr (q, "id = \""); + if (p == NULL) + { +#ifdef GRUB_UTIL + grub_util_info ("couldn't find ID\n"); +#endif + goto fail3; + } + p += sizeof ("id = \"") - 1; + grub_memcpy (vg_id, p, GRUB_LVM_ID_STRLEN); + vg_id[GRUB_LVM_ID_STRLEN] = '\0'; + + for (vg = vg_list; vg; vg = vg->next) + { + if (! grub_memcmp(vg_id, vg->id, GRUB_LVM_ID_STRLEN)) + break; + } + + if (! vg) + { + /* First time we see this volume group. We've to create the + whole volume group structure. */ + vg = grub_malloc (sizeof (*vg)); + if (! vg) + goto fail3; + vg->name = vgname; + grub_memcpy (vg->id, vg_id, GRUB_LVM_ID_STRLEN+1); + + vg->extent_size = grub_lvm_getvalue (&p, "extent_size = "); + if (p == NULL) + { +#ifdef GRUB_UTIL + grub_util_info ("unknown extent size\n"); +#endif + goto fail4; + } + + vg->lvs = NULL; + vg->pvs = NULL; + + p = grub_strstr (p, "physical_volumes {"); + if (p) + { + p += sizeof ("physical_volumes {") - 1; + + /* Add all the pvs to the volume group. */ + while (1) + { + int s; + while (grub_isspace (*p)) + p++; + + if (*p == '}') + break; + + pv = grub_malloc (sizeof (*pv)); + q = p; + while (*q != ' ') + q++; + + s = q - p; + pv->name = grub_malloc (s + 1); + grub_memcpy (pv->name, p, s); + pv->name[s] = '\0'; + + p = grub_strstr (p, "id = \""); + if (p == NULL) + goto pvs_fail; + p += sizeof("id = \"") - 1; + + grub_memcpy (pv->id, p, GRUB_LVM_ID_STRLEN); + pv->id[GRUB_LVM_ID_STRLEN] = '\0'; + + pv->start = grub_lvm_getvalue (&p, "pe_start = "); + if (p == NULL) + { +#ifdef GRUB_UTIL + grub_util_info ("unknown pe_start\n"); +#endif + goto pvs_fail; + } + + p = grub_strchr (p, '}'); + if (p == NULL) + { +#ifdef GRUB_UTIL + grub_util_info ("error parsing pe_start\n"); +#endif + goto pvs_fail; + } + p++; + + pv->disk = NULL; + pv->next = vg->pvs; + vg->pvs = pv; + + continue; + pvs_fail: + grub_free (pv->name); + grub_free (pv); + goto fail4; + } + } + + p = grub_strstr (p, "logical_volumes"); + if (p) + { + p += 18; + + /* And add all the lvs to the volume group. */ + while (1) + { + int s; + int skip_lv = 0; + struct grub_lvm_lv *lv; + struct grub_lvm_segment *seg; + int is_pvmove; + + while (grub_isspace (*p)) + p++; + + if (*p == '}') + break; + + lv = grub_malloc (sizeof (*lv)); + + q = p; + while (*q != ' ') + q++; + + s = q - p; + lv->name = grub_malloc (vgname_len + 1 + s + 1); + grub_memcpy (lv->name, vgname, vgname_len); + lv->name[vgname_len] = '-'; + grub_memcpy (lv->name + vgname_len + 1, p, s); + lv->name[vgname_len + 1 + s] = '\0'; + + lv->size = 0; + + lv->visible = grub_lvm_check_flag (p, "status", "VISIBLE"); + is_pvmove = grub_lvm_check_flag (p, "status", "PVMOVE"); + + lv->segment_count = grub_lvm_getvalue (&p, "segment_count = "); + if (p == NULL) + { +#ifdef GRUB_UTIL + grub_util_info ("unknown segment_count\n"); +#endif + goto lvs_fail; + } + lv->segments = grub_malloc (sizeof (*seg) * lv->segment_count); + seg = lv->segments; + + for (i = 0; i < lv->segment_count; i++) + { + + p = grub_strstr (p, "segment"); + if (p == NULL) + { +#ifdef GRUB_UTIL + grub_util_info ("unknown segment\n"); +#endif + goto lvs_segment_fail; + } + + seg->start_extent = grub_lvm_getvalue (&p, "start_extent = "); + if (p == NULL) + { +#ifdef GRUB_UTIL + grub_util_info ("unknown start_extent\n"); +#endif + goto lvs_segment_fail; + } + seg->extent_count = grub_lvm_getvalue (&p, "extent_count = "); + if (p == NULL) + { +#ifdef GRUB_UTIL + grub_util_info ("unknown extent_count\n"); +#endif + goto lvs_segment_fail; + } + + p = grub_strstr (p, "type = \""); + if (p == NULL) + goto lvs_segment_fail; + p += sizeof("type = \"") - 1; + + lv->size += seg->extent_count * vg->extent_size; + + if (grub_memcmp (p, "striped\"", + sizeof ("striped\"") - 1) == 0) + { + struct grub_lvm_node *stripe; + + seg->type = GRUB_LVM_STRIPED; + seg->node_count = grub_lvm_getvalue (&p, "stripe_count = "); + if (p == NULL) + { +#ifdef GRUB_UTIL + grub_util_info ("unknown stripe_count\n"); +#endif + goto lvs_segment_fail; + } + + if (seg->node_count != 1) + seg->stripe_size = grub_lvm_getvalue (&p, "stripe_size = "); + + seg->nodes = grub_zalloc (sizeof (*stripe) + * seg->node_count); + stripe = seg->nodes; + + p = grub_strstr (p, "stripes = ["); + if (p == NULL) + { +#ifdef GRUB_UTIL + grub_util_info ("unknown stripes\n"); +#endif + goto lvs_segment_fail2; + } + p += sizeof("stripes = [") - 1; + + for (j = 0; j < seg->node_count; j++) + { + p = grub_strchr (p, '"'); + if (p == NULL) + continue; + q = ++p; + while (*q != '"') + q++; + + s = q - p; + + stripe->name = grub_malloc (s + 1); + if (stripe->name == NULL) + goto lvs_segment_fail2; + + grub_memcpy (stripe->name, p, s); + stripe->name[s] = '\0'; + + stripe->start = grub_lvm_getvalue (&p, ","); + if (p == NULL) + continue; + + stripe++; + } + } + else if (grub_memcmp (p, "mirror\"", sizeof ("mirror\"") - 1) + == 0) + { + seg->type = GRUB_LVM_MIRROR; + seg->node_count = grub_lvm_getvalue (&p, "mirror_count = "); + if (p == NULL) + { +#ifdef GRUB_UTIL + grub_util_info ("unknown mirror_count\n"); +#endif + goto lvs_segment_fail; + } + + seg->nodes = grub_zalloc (sizeof (seg->nodes[0]) + * seg->node_count); + + p = grub_strstr (p, "mirrors = ["); + if (p == NULL) + { +#ifdef GRUB_UTIL + grub_util_info ("unknown mirrors\n"); +#endif + goto lvs_segment_fail2; + } + p += sizeof("mirrors = [") - 1; + + for (j = 0; j < seg->node_count; j++) + { + char *lvname; + + p = grub_strchr (p, '"'); + if (p == NULL) + continue; + q = ++p; + while (*q != '"') + q++; + + s = q - p; + + lvname = grub_malloc (s + 1); + if (lvname == NULL) + goto lvs_segment_fail2; + + grub_memcpy (lvname, p, s); + lvname[s] = '\0'; + seg->nodes[j].name = lvname; + p = q + 1; + } + /* Only first (original) is ok with in progress pvmove. */ + if (is_pvmove) + seg->node_count = 1; + } + else + { +#ifdef GRUB_UTIL + char *p2; + p2 = grub_strchr (p, '"'); + if (p2) + *p2 = 0; + grub_util_info ("unknown LVM type %s\n", p); + if (p2) + *p2 ='"'; +#endif + /* Found a non-supported type, give up and move on. */ + skip_lv = 1; + break; + } + + seg++; + + continue; + lvs_segment_fail2: + grub_free (seg->nodes); + lvs_segment_fail: + goto fail4; + } + + if (p != NULL) + p = grub_strchr (p, '}'); + if (p == NULL) + goto lvs_fail; + p += 3; + + if (skip_lv) + { + grub_free (lv->name); + grub_free (lv); + continue; + } + + lv->number = lv_count++; + lv->vg = vg; + lv->next = vg->lvs; + vg->lvs = lv; + + continue; + lvs_fail: + grub_free (lv->name); + grub_free (lv); + goto fail4; + } + } + + /* Match lvs. */ + { + struct grub_lvm_lv *lv1; + struct grub_lvm_lv *lv2; + for (lv1 = vg->lvs; lv1; lv1 = lv1->next) + for (i = 0; i < lv1->segment_count; i++) + for (j = 0; j < lv1->segments[i].node_count; j++) + { + if (vg->pvs) + for (pv = vg->pvs; pv; pv = pv->next) + { + if (! grub_strcmp (pv->name, + lv1->segments[i].nodes[j].name)) + { + lv1->segments[i].nodes[j].pv = pv; + break; + } + } + if (lv1->segments[i].nodes[j].pv == NULL) + for (lv2 = vg->lvs; lv2; lv2 = lv2->next) + if (grub_strcmp (lv2->name + grub_strlen (vg->name) + 1, + lv1->segments[i].nodes[j].name) == 0) + lv1->segments[i].nodes[j].lv = lv2; + } + + } + + vg->next = vg_list; + vg_list = vg; + } + else + { + grub_free (vgname); + } + + /* Match the device we are currently reading from with the right + PV. */ + if (vg->pvs) + for (pv = vg->pvs; pv; pv = pv->next) + { + if (! grub_memcmp (pv->id, pv_id, GRUB_LVM_ID_STRLEN)) + { + /* This could happen to LVM on RAID, pv->disk points to the + raid device, we shouldn't change it. */ + if (! pv->disk) + pv->disk = grub_disk_open (name); + break; + } + } + + goto fail2; + + /* Failure path. */ + fail4: + grub_free (vg); + fail3: + grub_free (vgname); + + /* Normal exit path. */ + fail2: + grub_free (metadatabuf); + fail: + grub_disk_close (disk); + if (grub_errno == GRUB_ERR_OUT_OF_RANGE) + grub_errno = GRUB_ERR_NONE; + grub_print_error (); + return 0; +} + +static struct grub_disk_dev grub_lvm_dev = + { + .name = "lvm", + .id = GRUB_DISK_DEVICE_LVM_ID, + .iterate = grub_lvm_iterate, + .open = grub_lvm_open, + .close = grub_lvm_close, + .read = grub_lvm_read, + .write = grub_lvm_write, +#ifdef GRUB_UTIL + .memberlist = grub_lvm_memberlist, +#endif + .next = 0 + }; + + +GRUB_MOD_INIT(lvm) +{ + grub_device_iterate (&grub_lvm_scan_device); + if (grub_errno) + { + grub_print_error (); + grub_errno = GRUB_ERR_NONE; + } + + grub_disk_dev_register (&grub_lvm_dev); +} + +GRUB_MOD_FINI(lvm) +{ + grub_disk_dev_unregister (&grub_lvm_dev); + vg_list = NULL; + /* FIXME: free the lvm list. */ +} |