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node_device: detect DASD devices

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Make Direct Access Storage Devices (DASDs) available in the node_device driver.

Reviewed-by: Bjoern Walk <bwalk@linux.ibm.com>
Reviewed-by: Erik Skultety <eskultet@redhat.com>
Signed-off-by: Boris Fiuczynski <fiuczy@linux.ibm.com>
This commit is contained in:
Boris Fiuczynski 2020-09-14 21:11:46 +02:00 committed by Erik Skultety
parent ab655afa18
commit 33bbf589dd
1 changed files with 28 additions and 0 deletions
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28
src/node_device/node_device_udev.c
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@ -871,6 +871,19 @@ udevProcessSD(struct udev_device *device,
}
static int
udevProcessDASD(struct udev_device *device,
virNodeDeviceDefPtr def)
{
virNodeDevCapStoragePtr storage = &def->caps->data.storage;
if (udevGetStringSysfsAttr(device, "device/uid", &storage->serial) < 0)
return -1;
return udevProcessDisk(device, def);
}
/* This function exists to deal with the case in which a driver does
* not provide a device type in the usual place, but udev told us it's
* a storage device, and we can make a good guess at what kind of
@ -891,6 +904,19 @@ udevKludgeStorageType(virNodeDeviceDefPtr def)
def->sysfs_path);
return 0;
}
/* For Direct Access Storage Devices (DASDs) there are
* currently no identifiers in udev besides ID_PATH. Since
* ID_TYPE=disk does not exist on DASDs they fall through
* the udevProcessStorage detection logic. */
if (STRPREFIX(def->caps->data.storage.block, "/dev/dasd")) {
def->caps->data.storage.drive_type = g_strdup("dasd");
VIR_DEBUG("Found storage type '%s' for device "
"with sysfs path '%s'",
def->caps->data.storage.drive_type,
def->sysfs_path);
return 0;
}
VIR_DEBUG("Could not determine storage type "
"for device with sysfs path '%s'", def->sysfs_path);
return -1;
@ -978,6 +1004,8 @@ udevProcessStorage(struct udev_device *device,
ret = udevProcessFloppy(device, def);
} else if (STREQ(def->caps->data.storage.drive_type, "sd")) {
ret = udevProcessSD(device, def);
} else if (STREQ(def->caps->data.storage.drive_type, "dasd")) {
ret = udevProcessDASD(device, def);
} else {
VIR_DEBUG("Unsupported storage type '%s'",
def->caps->data.storage.drive_type);