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filter-usable: remove udev dev size check

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For the pv_min_size check, always use dev_get_size()
which is commonly used elsewhere, and don't bother
asking libudev for the device size when
external_device_info_source=udev.
This commit is contained in:
David Teigland 2021-06-15 11:22:32 -05:00
parent 9048565093
commit deaf43d6f0
1 changed files with 4 additions and 73 deletions
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71
lib/filters/filter-usable.c
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@ -16,10 +16,6 @@
#include "lib/misc/lib.h"
#include "lib/filters/filter.h"
#include "lib/activate/activate.h"
#ifdef UDEV_SYNC_SUPPORT
#include <libudev.h>
#include "lib/device/dev-ext-udev-constants.h"
#endif
struct filter_data {
filter_mode_t mode;
@ -28,7 +24,7 @@ struct filter_data {
static const char *_too_small_to_hold_pv_msg = "Too small to hold a PV";
static int _native_check_pv_min_size(struct device *dev)
static int _check_pv_min_size(struct device *dev)
{
uint64_t size;
int ret = 0;
@ -50,61 +46,6 @@ out:
return ret;
}
#ifdef UDEV_SYNC_SUPPORT
static int _udev_check_pv_min_size(struct device *dev)
{
struct dev_ext *ext;
const char *size_str;
char *endp;
uint64_t size;
if (!(ext = dev_ext_get(dev)))
return_0;
if (!(size_str = udev_device_get_sysattr_value((struct udev_device *)ext->handle, DEV_EXT_UDEV_SYSFS_ATTR_SIZE))) {
log_debug_devs("%s: Skipping: failed to get size from sysfs [%s:%p]",
dev_name(dev), dev_ext_name(dev), dev->ext.handle);
return 0;
}
errno = 0;
size = strtoull(size_str, &endp, 10);
if (errno || !endp || *endp) {
log_debug_devs("%s: Skipping: failed to parse size from sysfs [%s:%p]",
dev_name(dev), dev_ext_name(dev), dev->ext.handle);
return 0;
}
if (size < pv_min_size()) {
log_debug_devs("%s: Skipping: %s [%s:%p]", dev_name(dev),
_too_small_to_hold_pv_msg,
dev_ext_name(dev), dev->ext.handle);
return 0;
}
return 1;
}
#else
static int _udev_check_pv_min_size(struct device *dev)
{
return 1;
}
#endif
static int _check_pv_min_size(struct device *dev)
{
if (dev->ext.src == DEV_EXT_NONE)
return _native_check_pv_min_size(dev);
if (dev->ext.src == DEV_EXT_UDEV)
return _udev_check_pv_min_size(dev);
log_error(INTERNAL_ERROR "Missing hook for PV min size check "
"using external device info source %s", dev_ext_name(dev));
return 0;
}
static int _passes_usable_filter(struct cmd_context *cmd, struct dev_filter *f, struct device *dev, const char *use_filter_name)
{
struct filter_data *data = f->private;
@ -156,19 +97,9 @@ static int _passes_usable_filter(struct cmd_context *cmd, struct dev_filter *f,
}
if (r) {
/* check if the device is not too small to hold a PV */
switch (mode) {
case FILTER_MODE_NO_LVMETAD:
/* fall through */
case FILTER_MODE_PRE_LVMETAD:
r = _check_pv_min_size(dev);
if (!r)
dev->filtered_flags |= DEV_FILTERED_MINSIZE;
break;
case FILTER_MODE_POST_LVMETAD:
/* nothing to do here */
break;
}
}
return r;