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9048565093
related to config settings:
obtain_device_info_from_udev (controls if lvm gets
a list of devices from readdir /dev or from libudev)
external_device_info_source (controls if lvm asks
libudev for device information)
. Make the obtain_device_list_from_udev setting
affect only the choice of readdir /dev vs libudev.
The setting no longer controls if udev is used for
device type checks.
. Change obtain_device_list_from_udev default to 0.
This helps avoid boot timeouts due to slow libudev
queries, avoids reported failures from
udev_enumerate_scan_devices, and avoids delays from
"device not initialized in udev database" errors.
Even without errors, for a system booting with 1024 PVs,
lvm2-pvscan times improve from about 100 sec to 15 sec,
and the pvscan command from about 64 sec to about 4 sec.
. For external_device_info_source="none", remove all
libudev device info queries, and use only lvm
native device info.
. For external_device_info_source="udev", first check
lvm native device info, then check libudev info.
. Remove sleep/retry loop when attempting libudev
queries for device info. udev info will simply
be skipped if it's not immediately available.
. Only set up a libdev connection if it will be used by
obtain_device_list_from_udev/external_device_info_source.
. For native multipath component detection, use
/etc/multipath/wwids. If a device has a wwid
matching an entry in the wwids file, then it's
considered a multipath component. This is
necessary to natively detect multipath
components when the mpath device is not set up.
72 lines
2.7 KiB
C
72 lines
2.7 KiB
C
/*
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* Copyright (C) 2001-2004 Sistina Software, Inc. All rights reserved.
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* Copyright (C) 2004 Luca Berra
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* Copyright (C) 2004-2013 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#ifndef _LVM_FILTER_H
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#define _LVM_FILTER_H
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#include "lib/device/dev-cache.h"
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#include "lib/device/dev-type.h"
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struct dev_filter *composite_filter_create(int n, struct dev_filter **filters);
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struct dev_filter *lvm_type_filter_create(struct dev_types *dt);
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struct dev_filter *md_filter_create(struct cmd_context *cmd, struct dev_types *dt);
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struct dev_filter *fwraid_filter_create(struct dev_types *dt);
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struct dev_filter *mpath_filter_create(struct dev_types *dt);
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struct dev_filter *partitioned_filter_create(struct dev_types *dt);
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struct dev_filter *persistent_filter_create(struct dev_types *dt, struct dev_filter *f);
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struct dev_filter *sysfs_filter_create(void);
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struct dev_filter *signature_filter_create(struct dev_types *dt);
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struct dev_filter *deviceid_filter_create(struct cmd_context *cmd);
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struct dev_filter *internal_filter_create(void);
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int internal_filter_allow(struct dm_pool *mem, struct device *dev);
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void internal_filter_clear(void);
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/*
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* patterns must be an array of strings of the form:
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* [ra]<sep><regex><sep>, eg,
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* r/cdrom/ - reject cdroms
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* a|loop/[0-4]| - accept loops 0 to 4
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* r|.*| - reject everything else
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*/
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struct dev_filter *regex_filter_create(const struct dm_config_value *patterns, int config_filter, int config_global_filter);
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typedef enum {
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FILTER_MODE_NO_LVMETAD,
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FILTER_MODE_PRE_LVMETAD,
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FILTER_MODE_POST_LVMETAD
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} filter_mode_t;
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struct dev_filter *usable_filter_create(struct cmd_context *cmd, struct dev_types *dt, filter_mode_t mode);
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#define DEV_FILTERED_FWRAID 0x00000001
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#define DEV_FILTERED_INTERNAL 0x00000002
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#define DEV_FILTERED_MD_COMPONENT 0x00000004
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#define DEV_FILTERED_MPATH_COMPONENT 0x00000008
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#define DEV_FILTERED_PARTITIONED 0x00000010
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#define DEV_FILTERED_REGEX 0x00000020
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#define DEV_FILTERED_SIGNATURE 0x00000040
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#define DEV_FILTERED_SYSFS 0x00000080
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#define DEV_FILTERED_DEVTYPE 0x00000100
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#define DEV_FILTERED_MINSIZE 0x00000200
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#define DEV_FILTERED_UNUSABLE 0x00000400
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#define DEV_FILTERED_DEVICES_FILE 0x00000800
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#define DEV_FILTERED_DEVICES_LIST 0x00001000
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#define DEV_FILTERED_IS_LV 0x00002000
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#endif /* _LVM_FILTER_H */
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