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storage: lvm: use correct lv* command parameters

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lvcreate want's the parent pool's name, not the pool path
lvchange and lvremove want lv specified as $vgname/$lvname

This largely worked before because these commands strip off a
starting /dev. But https://bugzilla.redhat.com/show_bug.cgi?id=714986
is from a user using a 'nested VG' that was having problems.

I couldn't find any info on nested LVM and the reporter never responded,
but I reproduced with XML that specified a valid source name, and
set target path to a symlink.
This commit is contained in:
Cole Robinson 2012-04-13 07:34:41 -04:00
parent 455d222457
commit 61544d310e
1 changed files with 11 additions and 10 deletions
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21
src/storage/storage_backend_logical.c
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@ -672,7 +672,7 @@ virStorageBackendLogicalCreateVol(virConnectPtr conn,
char size[100];
const char *cmdargvnew[] = {
LVCREATE, "--name", vol->name, "-L", size,
pool->def->target.path, NULL
pool->def->source.name, NULL
};
const char *cmdargvsnap[] = {
LVCREATE, "--name", vol->name, "-L", size,
@ -778,23 +778,23 @@ virStorageBackendLogicalDeleteVol(virConnectPtr conn ATTRIBUTE_UNUSED,
unsigned int flags)
{
int ret = -1;
char *volpath = NULL;
virCommandPtr lvchange_cmd = NULL;
virCommandPtr lvremove_cmd = NULL;
virCheckFlags(0, -1);
if (virAsprintf(&volpath, "%s/%s",
pool->def->source.name, vol->name) < 0) {
virReportOOMError();
goto cleanup;
}
virFileWaitForDevices();
lvchange_cmd = virCommandNewArgList(LVCHANGE,
"-aln",
vol->target.path,
NULL);
lvremove_cmd = virCommandNewArgList(LVREMOVE,
"-f",
vol->target.path,
NULL);
lvchange_cmd = virCommandNewArgList(LVCHANGE, "-aln", volpath, NULL);
lvremove_cmd = virCommandNewArgList(LVREMOVE, "-f", volpath, NULL);
if (virCommandRun(lvremove_cmd, NULL) < 0) {
if (virCommandRun(lvchange_cmd, NULL) < 0) {
@ -807,6 +807,7 @@ virStorageBackendLogicalDeleteVol(virConnectPtr conn ATTRIBUTE_UNUSED,
ret = 0;
cleanup:
VIR_FREE(volpath);
virCommandFree(lvchange_cmd);
virCommandFree(lvremove_cmd);
return ret;