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git://sourceware.org/git/lvm2.git
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d952358636
Device quirks may cause sysfs wwid file to change what it displays, from a bogus eui... string to an nvme... string. The old wwid may be saved in system.devices, so recognizing the device requires finding the old value from libnvme. After matching the old bogus value using libnvme, system.devices is updated with the current sysfs wwid value.
113 lines
4.1 KiB
C
113 lines
4.1 KiB
C
/*
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* Copyright (C) 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_DEV_TYPE_H
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#define _LVM_DEV_TYPE_H
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#include "lib/device/device.h"
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#include "lib/display/display.h"
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#include "lib/label/label.h"
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#include "lib/device/filesystem.h"
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#define NUMBER_OF_MAJORS 4096
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#ifdef __linux__
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# include "libdm/misc/kdev_t.h"
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#else
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# define MAJOR(x) major((x))
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# define MINOR(x) minor((x))
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# define MKDEV(x,y) makedev((x),(y))
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#endif
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#define PARTITION_SCSI_DEVICE (1 << 0)
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struct dev_type_def {
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int max_partitions; /* 0 means LVM won't use this major number. */
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int flags;
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};
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struct dev_types {
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unsigned md_major;
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unsigned blkext_major;
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unsigned drbd_major;
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unsigned device_mapper_major;
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unsigned emcpower_major;
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unsigned vxdmp_major;
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unsigned power2_major;
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unsigned dasd_major;
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unsigned loop_major;
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struct dev_type_def dev_type_array[NUMBER_OF_MAJORS];
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};
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struct dev_types *create_dev_types(const char *proc_dir, const struct dm_config_node *cn);
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/* Subsystems */
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int dev_subsystem_part_major(struct dev_types *dt, struct device *dev);
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const char *dev_subsystem_name(struct dev_types *dt, struct device *dev);
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int major_is_scsi_device(struct dev_types *dt, int major);
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/* Signature/superblock recognition with position returned where found. */
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int dev_is_md_component(struct cmd_context *cmd, struct device *dev, uint64_t *sb, int full);
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int dev_is_mpath_component(struct cmd_context *cmd, struct device *dev, dev_t *mpath_devno);
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int dev_is_swap(struct cmd_context *cmd, struct device *dev, uint64_t *signature, int full);
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int dev_is_luks(struct cmd_context *cmd, struct device *dev, uint64_t *signature, int full);
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int dasd_is_cdl_formatted(struct device *dev);
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const char *dev_mpath_component_wwid(struct cmd_context *cmd, struct device *dev);
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int dev_is_lvm1(struct device *dev, char *buf, int buflen);
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int dev_is_pool(struct device *dev, char *buf, int buflen);
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/* Signature wiping. */
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#define TYPE_LVM1_MEMBER 0x001
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#define TYPE_LVM2_MEMBER 0x002
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#define TYPE_DM_SNAPSHOT_COW 0x004
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int wipe_known_signatures(struct cmd_context *cmd, struct device *dev, const char *name,
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uint32_t types_to_exclude, uint32_t types_no_prompt,
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int yes, force_t force, int *wiped);
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/* Type-specific device properties */
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unsigned long dev_md_stripe_width(struct dev_types *dt, struct device *dev);
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int dev_is_md_with_end_superblock(struct dev_types *dt, struct device *dev);
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/* Partitioning */
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int major_max_partitions(struct dev_types *dt, int major);
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int dev_is_partitioned(struct cmd_context *cmd, struct device *dev);
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int dev_get_primary_dev(struct dev_types *dt, struct device *dev, dev_t *result);
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int dev_get_partition_number(struct device *dev, int *num);
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/* Various device properties */
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unsigned long dev_alignment_offset(struct dev_types *dt, struct device *dev);
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unsigned long dev_minimum_io_size(struct dev_types *dt, struct device *dev);
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unsigned long dev_optimal_io_size(struct dev_types *dt, struct device *dev);
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unsigned long dev_discard_max_bytes(struct dev_types *dt, struct device *dev);
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unsigned long dev_discard_granularity(struct dev_types *dt, struct device *dev);
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int dev_is_rotational(struct dev_types *dt, struct device *dev);
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int dev_is_pmem(struct dev_types *dt, struct device *dev);
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int dev_is_nvme(struct device *dev);
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int dev_is_lv(struct cmd_context *cmd, struct device *dev);
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#define FSTYPE_MAX 16
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int fs_block_size_and_type(const char *pathname, uint32_t *fs_block_size_bytes, char *fstype, int *nofs);
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int fs_get_blkid(const char *pathname, struct fs_info *fsi);
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int dev_is_used_by_active_lv(struct cmd_context *cmd, struct device *dev, int *used_by_lv_count,
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char **used_by_dm_name, char **used_by_vg_uuid, char **used_by_lv_uuid);
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#endif
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