static void
virStorageBackendFileSystemNetFindNFSPoolSources(virNetfsDiscoverState *state)
{
/*
* # showmount --no-headers -e HOSTNAME
* /tmp *
* /A dir demo1.foo.bar,demo2.foo.bar
*
* Extract directory name (including possible interior spaces ...).
*/
const char *regexes[] = {
"^(/.*\\S) +\\S+$"
};
int vars[] = {
1
};
virCommandPtr cmd = NULL;
cmd = virCommandNewArgList(SHOWMOUNT,
"--no-headers",
"--exports",
state->host,
NULL);
if (virCommandRunRegex(cmd, 1, regexes, vars,
virStorageBackendFileSystemNetFindPoolSourcesFunc,
&state, NULL) < 0)
virResetLastError();
virCommandFree(cmd);
}
int
virISCSIScanTargets(const char *portal,
size_t *ntargetsret,
char ***targetsret)
{
/**
*
* The output of sendtargets is very simple, just two columns,
* portal then target name
*
* 192.168.122.185:3260,1 iqn.2004-04.com:fedora14:iscsi.demo0.bf6d84
* 192.168.122.185:3260,1 iqn.2004-04.com:fedora14:iscsi.demo1.bf6d84
* 192.168.122.185:3260,1 iqn.2004-04.com:fedora14:iscsi.demo2.bf6d84
* 192.168.122.185:3260,1 iqn.2004-04.com:fedora14:iscsi.demo3.bf6d84
*/
const char *regexes[] = {
"^\\s*(\\S+)\\s+(\\S+)\\s*$"
};
int vars[] = { 2 };
struct virISCSITargetList list;
size_t i;
int ret = -1;
virCommandPtr cmd = virCommandNewArgList(ISCSIADM,
"--mode", "discovery",
"--type", "sendtargets",
"--portal", portal,
"--op", "nonpersistent",
NULL);
memset(&list, 0, sizeof(list));
if (virCommandRunRegex(cmd,
1,
regexes,
vars,
virISCSIGetTargets,
&list, NULL, NULL) < 0)
goto cleanup;
if (ntargetsret && targetsret) {
*ntargetsret = list.ntargets;
*targetsret = list.targets;
} else {
for (i = 0; i < list.ntargets; i++)
VIR_FREE(list.targets[i]);
VIR_FREE(list.targets);
}
ret = 0;
cleanup:
virCommandFree(cmd);
return ret;
}
char *
virISCSIGetSession(const char *devpath,
bool probe)
{
/*
* # iscsiadm --mode session
* tcp: [1] 192.168.122.170:3260,1 demo-tgt-b
* tcp: [2] 192.168.122.170:3260,1 demo-tgt-a
*
* Pull out 2nd and 4th fields
*/
const char *regexes[] = {
"^tcp:\\s+\\[(\\S+)\\]\\s+\\S+\\s+(\\S+).*$"
};
int vars[] = {
2,
};
struct virISCSISessionData cbdata = {
.session = NULL,
.devpath = devpath,
};
char *error = NULL;
int exitstatus = 0;
virCommandPtr cmd = virCommandNewArgList(ISCSIADM, "--mode",
"session", NULL);
virCommandSetErrorBuffer(cmd, &error);
if (virCommandRunRegex(cmd,
1,
regexes,
vars,
virISCSIExtractSession,
&cbdata, NULL, &exitstatus) < 0)
goto cleanup;
if (cbdata.session == NULL && !probe)
virReportError(VIR_ERR_INTERNAL_ERROR,
_("cannot find iscsiadm session: %s"),
NULLSTR(error));
cleanup:
VIR_FREE(error);
virCommandFree(cmd);
return cbdata.session;
}
/*
* @sourceList: Pointer to a storage pool source list
*
* Use the pvs command to fill the list of pv_name and vg_name associated
* into the passed sourceList.
*
* Returns 0 if successful, -1 and sets error on failure
*/
static int
virStorageBackendLogicalGetPoolSources(virStoragePoolSourceListPtr sourceList)
{
/*
* # pvs --noheadings -o pv_name,vg_name
* /dev/sdb
* /dev/sdc VolGroup00
*/
const char *regexes[] = {
"^\\s*(\\S+)\\s+(\\S+)\\s*$"
};
int vars[] = {
2
};
virCommandPtr cmd;
int ret = -1;
/*
* NOTE: ignoring errors here; this is just to "touch" any logical volumes
* that might be hanging around, so if this fails for some reason, the
* worst that happens is that scanning doesn't pick everything up
*/
cmd = virCommandNew(VGSCAN);
if (virCommandRun(cmd, NULL) < 0)
VIR_WARN("Failure when running vgscan to refresh physical volumes");
virCommandFree(cmd);
cmd = virCommandNewArgList(PVS,
"--noheadings",
"-o", "pv_name,vg_name",
NULL);
if (virCommandRunRegex(cmd, 1, regexes, vars,
virStorageBackendLogicalFindPoolSourcesFunc,
sourceList, "pvs") < 0)
goto cleanup;
ret = 0;
cleanup:
virCommandFree(cmd);
return ret;
}
static int
virStorageBackendLogicalFindLVs(virStoragePoolObjPtr pool,
virStorageVolDefPtr vol)
{
/*
* # lvs --separator , --noheadings --units b --unbuffered --nosuffix --options \
* "lv_name,origin,uuid,devices,seg_size,vg_extent_size,size,lv_attr" VGNAME
*
* RootLV,,06UgP5-2rhb-w3Bo-3mdR-WeoL-pytO-SAa2ky,/dev/hda2(0),5234491392,33554432,5234491392,-wi-ao
* SwapLV,,oHviCK-8Ik0-paqS-V20c-nkhY-Bm1e-zgzU0M,/dev/hda2(156),1040187392,33554432,1040187392,-wi-ao
* Test2,,3pg3he-mQsA-5Sui-h0i6-HNmc-Cz7W-QSndcR,/dev/hda2(219),1073741824,33554432,1073741824,owi-a-
* Test3,,UB5hFw-kmlm-LSoX-EI1t-ioVd-h7GL-M0W8Ht,/dev/hda2(251),2181038080,33554432,2181038080,-wi-a-
* Test3,Test2,UB5hFw-kmlm-LSoX-EI1t-ioVd-h7GL-M0W8Ht,/dev/hda2(187),1040187392,33554432,1040187392,swi-a-
*
* Pull out name, origin, & uuid, device, device extent start #,
* segment size, extent size, size, attrs
*
* NB can be multiple rows per volume if they have many extents
*
* NB lvs from some distros (e.g. SLES10 SP2) outputs trailing "," on each line
*
* NB Encrypted logical volumes can print ':' in their name, so it is
* not a suitable separator (rhbz 470693).
* NB "devices" field has multiple device paths and "," if the volume is
* striped, so "," is not a suitable separator either (rhbz 727474).
*/
const char *regexes[] = {
"^\\s*(\\S+)#(\\S*)#(\\S+)#(\\S+)#(\\S+)#([0-9]+)#(\\S+)#([0-9]+)#([0-9]+)#(\\S+)#?\\s*$"
};
int vars[] = {
10
};
int ret = -1;
virCommandPtr cmd;
struct virStorageBackendLogicalPoolVolData cbdata = {
.pool = pool,
.vol = vol,
};
cmd = virCommandNewArgList(LVS,
"--separator", "#",
"--noheadings",
"--units", "b",
"--unbuffered",
"--nosuffix",
"--options",
"lv_name,origin,uuid,devices,segtype,stripes,seg_size,vg_extent_size,size,lv_attr",
pool->def->source.name,
NULL);
if (virCommandRunRegex(cmd,
1,
regexes,
vars,
virStorageBackendLogicalMakeVol,
&cbdata,
"lvs") < 0)
goto cleanup;
ret = 0;
cleanup:
virCommandFree(cmd);
return ret;
}
