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Tool support for multiple (striped) segments (incomplete).

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This commit is contained in:
Alasdair Kergon 2001-11-27 13:42:37 +00:00
parent 33dee813b5
commit 09476171a6
3 changed files with 87 additions and 16 deletions
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6
tools/commands.h
View File

@ -110,12 +110,13 @@ xx(lvextend,
"\t[-A/--autobackup y/n]\n"
"\t[-d/--debug]\n"
"\t[-h/-?/--help]\n"
"\t[-i|--stripes Stripes [-I|--stripesize StripeSize]]\n"
"\t{-l/--extents [+]LogicalExtentsNumber |\n"
"\t -L/--size [+]LogicalVolumeSize[kKmMgGtT]}\n"
"\t[-v/--verbose]\n"
"\tLogicalVolume[Path] [ PhysicalVolumePath... ]\n",
autobackup_ARG, extents_ARG, size_ARG)
autobackup_ARG, extents_ARG, size_ARG, stripes_ARG, stripesize_ARG)
xx(lvmchange,
"With the device mapper, lvmchange is obsolete and does nothing.",
@ -205,12 +206,13 @@ xx(lvresize,
"\t[-A/--autobackup y/n]\n"
"\t[-d/--debug]\n"
"\t[-h/-?/--help]\n"
"\t[-i|--stripes Stripes [-I|--stripesize StripeSize]]\n"
"\t{-l/--extents [+/-]LogicalExtentsNumber |\n"
"\t -L/--size [+/-]LogicalVolumeSize[kKmMgGtT]}\n"
"\t[-v/--verbose]\n"
"\tLogicalVolume[Path] [ PhysicalVolumePath... ]\n",
autobackup_ARG, extents_ARG, size_ARG)
autobackup_ARG, extents_ARG, size_ARG, stripes_ARG, stripesize_ARG)
xx(lvscan,
"List all logical volumes in all volume groups",

92
tools/lvresize.c
View File

@ -26,6 +26,9 @@ int lvresize(int argc, char **argv)
struct logical_volume *lv;
uint32_t extents = 0;
uint32_t size = 0;
uint32_t stripes = 0, stripesize = 0;
uint32_t seg_stripes = 0, seg_stripesize = 0, seg_size = 0;
uint32_t size_rest;
sign_t sign = SIGN_NONE;
char *lv_name, *vg_name;
char *st;
@ -33,6 +36,7 @@ int lvresize(int argc, char **argv)
const char *cmd_name;
struct list *lvh, *pvh, *pvl;
int opt = 0;
int seg;
enum {
LV_ANY = 0,
@ -71,6 +75,14 @@ int lvresize(int argc, char **argv)
return EINVALID_CMD_LINE;
}
if (arg_count(stripes_ARG)) {
log_print("Stripes not yet implemented in LVM2. Ignoring.");
stripes = arg_int_value(stripes_ARG, 1);
}
if (arg_count(stripesize_ARG))
stripesize = 2 * arg_int_value(stripesize_ARG, 0);
if (!argc) {
log_error("Please provide the logical volume name");
return EINVALID_CMD_LINE;
@ -154,17 +166,6 @@ int lvresize(int argc, char **argv)
extents = lv->le_count - extents;
}
/************ FIXME Stripes (lvreduce)
size_rest = new_size % (vg->lv[l]->lv_stripes * vg->pe_size);
if (size_rest != 0) {
log_print
("rounding size %ld KB to stripe boundary size ",
new_size / 2);
new_size = new_size - size_rest;
printf("%ld KB\n", new_size / 2);
}
***********************/
if (!extents) {
log_error("New size of 0 not permitted");
return EINVALID_CMD_LINE;
@ -176,6 +177,72 @@ int lvresize(int argc, char **argv)
return EINVALID_CMD_LINE;
}
/* If extending, find stripes, stripesize & size of last segment */
if (extents > lv->le_count && (!stripes || !stripesize)) {
for (seg = 0; seg < lv->segment_count; seg++) {
uint32_t sz = lv->segments[seg]->stripesize;
uint32_t str = lv->segments[seg]->stripes;
if ((seg_stripesize && seg_stripesize != sz
&& !stripesize) ||
(seg_stripes && seg_stripes != str
&& !stripes)) {
log_error("Please specify number of "
"stripes (-i) and stripesize (-I)");
return EINVALID_CMD_LINE;
}
seg_stripesize = sz;
seg_stripes = str;
}
if (!stripesize)
stripesize = seg_stripesize;
if (!stripes)
stripes = seg_stripes;
seg_size = extents - lv->le_count;
}
/* If reducing, find stripes, stripesize & size of last segment */
if (extents < lv->le_count) {
uint32_t extents_used = 0;
if (stripes || stripesize)
log_error("Ignoring stripes and stripesize arguments "
"when reducing");
for (seg = 0; seg < lv->segment_count; seg++) {
uint32_t seg_extents = lv->segments[seg]->pe_count *
vg->extent_size;
seg_stripesize = lv->segments[seg]->stripesize;
seg_stripes = lv->segments[seg]->stripes;
if (extents <= extents_used + seg_extents)
break;
extents_used += seg_extents;
}
seg_size = extents - extents_used;
stripesize = seg_stripesize;
stripes = seg_stripes;
}
if ((size_rest = seg_size % (stripes * vg->extent_size))) {
log_print("Rounding size (%d extents) down to stripe boundary "
"size of last segment (%d extents)", extents,
extents - size_rest );
extents = extents - size_rest;
}
if (extents == lv->le_count) {
log_error("New size (%d extents) matches existing size "
"(%d extents)", extents, lv->le_count);
return EINVALID_CMD_LINE;
}
if (extents < lv->le_count) {
if (resize == LV_EXTEND) {
log_error("New size given (%d extents) not larger "
@ -259,7 +326,8 @@ int lvresize(int argc, char **argv)
log_print("Extending logical volume %s to %s", lv_name, dummy);
dbg_free(dummy);
lv_extend(lv, extents - lv->le_count, pvh);
lv_extend(lv, stripes, stripesize, extents - lv->le_count,
pvh);
}
/********* FIXME Suspend lv ***********/

5
tools/lvscan.c
View File

@ -94,8 +94,9 @@ static int lvscan_single(struct logical_volume *lv)
dbg_free(dummy);
/* FIXME sprintf? */
if (lv->stripes > 1 && !(lv->status & SNAPSHOT))
log_print(" striped[%u]", lv->stripes);
/* FIXME Handle segments? */
if (lv->segments[0]->stripes > 1 && !(lv->status & SNAPSHOT))
log_print(" striped[%u]", lv->segments[0]->stripes);
/******** FIXME Device number display & Snapshot
if (arg_count(blockdevice_ARG))