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1c7a509bed
Just like MD filtering that detects components of software RAID (md),
add detection for firmware RAID.
We're not adding any native code to detect this - there are lots of
firmware RAIDs out there which is just out of LVM scope. However,
with current changes with which we're able to get device info from
external sources (e.g. external_device_info_source="udev"), we can
do this easily if the external device status source has this kind
of information - which is the case of "udev" source where the results
of blkid scans are stored.
This detection should cover all firmware RAIDs that blkid can detect and
which are identified as:
ID_FS_TYPE = {adaptec,ddf,hpt45x,hpt37x,isw,jmicron,lsi_mega,nvidia,promise_fasttrack,silicon_medley,via}_raid_member
123 lines
2.7 KiB
C
123 lines
2.7 KiB
C
/*
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* Copyright (C) 2014 Red Hat, Inc. All rights reserved.
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*
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* This file is part of LVM2.
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*
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* This copyrighted material is made available to anyone wishing to use,
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* modify, copy, or redistribute it subject to the terms and conditions
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* of the GNU Lesser General Public License v.2.1.
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*
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* You should have received a copy of the GNU Lesser General Public License
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* along with this program; if not, write to the Free Software Foundation,
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* Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#include "lib.h"
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#include "filter.h"
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#ifdef UDEV_SYNC_SUPPORT
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#include <libudev.h>
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#endif
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#ifdef __linux__
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#ifdef UDEV_SYNC_SUPPORT
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static int _udev_dev_is_fwraid(struct device *dev)
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{
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const char *value;
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value = udev_device_get_property_value((struct udev_device *)dev->ext.handle, "ID_FS_TYPE");
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if (value && strcmp(value, "linux_raid_member") && strstr(value, "_raid_member"))
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return 1;
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return 0;
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}
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#else
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static int _udev_dev_is_fwraid(struct device *dev)
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{
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return 0;
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}
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#endif
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static int _native_dev_is_fwraid(struct device *dev)
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{
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log_verbose("%s: Firmware RAID detection is not supported by LVM natively. "
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"Skipping firmware raid detection. ", dev_name(dev));
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return 0;
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}
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static int _dev_is_fwraid(struct device *dev)
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{
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if (dev->ext.src == DEV_EXT_NONE)
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return _native_dev_is_fwraid(dev);
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if (dev->ext.src == DEV_EXT_UDEV)
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return _udev_dev_is_fwraid(dev);
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log_error(INTERNAL_ERROR "Missing hook for firmware RAID recognition "
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"using external device info source %s", dev_ext_name(dev));
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return 0;
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}
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static int _ignore_fwraid(struct dev_filter *f __attribute__((unused)),
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struct device *dev)
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{
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int ret;
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if (!fwraid_filtering())
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return 1;
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ret = _dev_is_fwraid(dev);
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if (ret == 1) {
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log_debug_devs("%s: Skipping firmware RAID component device [%s:%p]",
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dev_name(dev), dev_ext_name(dev), dev->ext.handle);
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return 0;
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}
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if (ret < 0) {
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log_debug_devs("%s: Skipping: error in firmware RAID component detection",
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dev_name(dev));
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return 0;
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}
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return 1;
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}
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static void _destroy(struct dev_filter *f)
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{
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if (f->use_count)
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log_error(INTERNAL_ERROR "Destroying firmware RAID filter while in use %u times.", f->use_count);
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dm_free(f);
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}
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struct dev_filter *fwraid_filter_create(struct dev_types *dt __attribute__((unused)))
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{
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struct dev_filter *f;
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if (!(f = dm_zalloc(sizeof(*f)))) {
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log_error("Firmware RAID filter allocation failed");
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return NULL;
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}
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f->passes_filter = _ignore_fwraid;
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f->destroy = _destroy;
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f->use_count = 0;
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f->private = NULL;
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log_debug_devs("Firmware RAID filter initialised.");
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return f;
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}
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#else
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struct dev_filter *fwraid_filter_create(struct dev_types *dt __attribute__((unused)))
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{
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return NULL;
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}
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#endif
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