mirror of
git://sourceware.org/git/lvm2.git
synced 2025-01-03 05:18:29 +03:00
ff64e3500f
New options to 'lvchange' allow users to scrub their RAID LVs.
Synopsis:
lvchange --syncaction {check|repair} vg/raid_lv
RAID scrubbing is the process of reading all the data and parity blocks in
an array and checking to see whether they are coherent. 'lvchange' can
now initaite the two scrubbing operations: "check" and "repair". "check"
will go over the array and recored the number of discrepancies but not
repair them. "repair" will correct the discrepancies as it finds them.
'lvchange --syncaction repair vg/raid_lv' is not to be confused with
'lvconvert --repair vg/raid_lv'. The former initiates a background
synchronization operation on the array, while the latter is designed to
repair/replace failed devices in a mirror or RAID logical volume.
Additional reporting has been added for 'lvs' to support the new
operations. Two new printable fields (which are not printed by
default) have been added: "syncaction" and "mismatches". These
can be accessed using the '-o' option to 'lvs', like:
lvs -o +syncaction,mismatches vg/lv
"syncaction" will print the current synchronization operation that the
RAID volume is performing. It can be one of the following:
- idle: All sync operations complete (doing nothing)
- resync: Initializing an array or recovering after a machine failure
- recover: Replacing a device in the array
- check: Looking for array inconsistencies
- repair: Looking for and repairing inconsistencies
The "mismatches" field with print the number of descrepancies found during
a check or repair operation.
The 'Cpy%Sync' field already available to 'lvs' will print the progress
of any of the above syncactions, including check and repair.
Finally, the lv_attr field has changed to accomadate the scrubbing operations
as well. The role of the 'p'artial character in the lv_attr report field
as expanded. "Partial" is really an indicator for the health of a
logical volume and it makes sense to extend this include other health
indicators as well, specifically:
'm'ismatches: Indicates that there are discrepancies in a RAID
LV. This character is shown after a scrubbing
operation has detected that portions of the RAID
are not coherent.
'r'efresh : Indicates that a device in a RAID array has suffered
a failure and the kernel regards it as failed -
even though LVM can read the device label and
considers the device to be ok. The LV should be
'r'efreshed to notify the kernel that the device is
now available, or the device should be 'r'eplaced
if it is suspected of failing.
178 lines
6.3 KiB
C
178 lines
6.3 KiB
C
/*
|
|
* Copyright (C) 2001-2004 Sistina Software, Inc. All rights reserved.
|
|
* Copyright (C) 2004-2012 Red Hat, Inc. All rights reserved.
|
|
*
|
|
* This file is part of LVM2.
|
|
*
|
|
* This copyrighted material is made available to anyone wishing to use,
|
|
* modify, copy, or redistribute it subject to the terms and conditions
|
|
* of the GNU Lesser General Public License v.2.1.
|
|
*
|
|
* You should have received a copy of the GNU Lesser General Public License
|
|
* along with this program; if not, write to the Free Software Foundation,
|
|
* Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
|
|
*/
|
|
|
|
#ifndef LVM_ACTIVATE_H
|
|
#define LVM_ACTIVATE_H
|
|
|
|
#include "metadata-exported.h"
|
|
|
|
struct lvinfo {
|
|
int exists;
|
|
int suspended;
|
|
unsigned int open_count;
|
|
int major;
|
|
int minor;
|
|
int read_only;
|
|
int live_table;
|
|
int inactive_table;
|
|
uint32_t read_ahead;
|
|
};
|
|
|
|
struct lv_activate_opts {
|
|
int exclusive;
|
|
int origin_only;
|
|
int no_merging;
|
|
int send_messages;
|
|
int skip_in_use;
|
|
unsigned revert;
|
|
unsigned read_only;
|
|
};
|
|
|
|
/* target attribute flags */
|
|
#define MIRROR_LOG_CLUSTERED 0x00000001U
|
|
|
|
/* thin target attribute flags */
|
|
enum {
|
|
/* bitfields - new features from 1.1 version */
|
|
THIN_FEATURE_DISCARDS = (1 << 0),
|
|
THIN_FEATURE_EXTERNAL_ORIGIN = (1 << 1),
|
|
THIN_FEATURE_HELD_ROOT = (1 << 2),
|
|
THIN_FEATURE_BLOCK_SIZE = (1 << 3),
|
|
THIN_FEATURE_DISCARDS_NON_POWER_2 = (1 << 4),
|
|
};
|
|
|
|
void set_activation(int activation);
|
|
int activation(void);
|
|
|
|
int driver_version(char *version, size_t size);
|
|
int library_version(char *version, size_t size);
|
|
int lvm1_present(struct cmd_context *cmd);
|
|
|
|
int module_present(struct cmd_context *cmd, const char *target_name);
|
|
int target_present(struct cmd_context *cmd, const char *target_name,
|
|
int use_modprobe);
|
|
int target_version(const char *target_name, uint32_t *maj,
|
|
uint32_t *min, uint32_t *patchlevel);
|
|
int lvm_dm_prefix_check(int major, int minor, const char *prefix);
|
|
int list_segment_modules(struct dm_pool *mem, const struct lv_segment *seg,
|
|
struct dm_list *modules);
|
|
int list_lv_modules(struct dm_pool *mem, const struct logical_volume *lv,
|
|
struct dm_list *modules);
|
|
|
|
void activation_release(void);
|
|
void activation_exit(void);
|
|
|
|
/* int lv_suspend(struct cmd_context *cmd, const char *lvid_s); */
|
|
int lv_suspend_if_active(struct cmd_context *cmd, const char *lvid_s, unsigned origin_only, unsigned exclusive);
|
|
int lv_resume(struct cmd_context *cmd, const char *lvid_s, unsigned origin_only);
|
|
int lv_resume_if_active(struct cmd_context *cmd, const char *lvid_s,
|
|
unsigned origin_only, unsigned exclusive, unsigned revert);
|
|
int lv_activate(struct cmd_context *cmd, const char *lvid_s, int exclusive);
|
|
int lv_activate_with_filter(struct cmd_context *cmd, const char *lvid_s,
|
|
int exclusive);
|
|
int lv_deactivate(struct cmd_context *cmd, const char *lvid_s);
|
|
|
|
int lv_mknodes(struct cmd_context *cmd, const struct logical_volume *lv);
|
|
|
|
/*
|
|
* Returns 1 if info structure has been populated, else 0.
|
|
*/
|
|
int lv_info(struct cmd_context *cmd, const struct logical_volume *lv, int use_layer,
|
|
struct lvinfo *info, int with_open_count, int with_read_ahead);
|
|
int lv_info_by_lvid(struct cmd_context *cmd, const char *lvid_s, int use_layer,
|
|
struct lvinfo *info, int with_open_count, int with_read_ahead);
|
|
|
|
int lv_check_not_in_use(struct cmd_context *cmd, struct logical_volume *lv,
|
|
struct lvinfo *info);
|
|
|
|
/*
|
|
* Returns 1 if activate_lv has been set: 1 = activate; 0 = don't.
|
|
*/
|
|
int lv_activation_filter(struct cmd_context *cmd, const char *lvid_s,
|
|
int *activate_lv);
|
|
/*
|
|
* Checks against the auto_activation_volume_list and
|
|
* returns 1 if the LV should be activated, 0 otherwise.
|
|
*/
|
|
int lv_passes_auto_activation_filter(struct cmd_context *cmd, struct logical_volume *lv);
|
|
|
|
int lv_check_transient(struct logical_volume *lv);
|
|
/*
|
|
* Returns 1 if percent has been set, else 0.
|
|
*/
|
|
int lv_snapshot_percent(const struct logical_volume *lv, percent_t *percent);
|
|
int lv_mirror_percent(struct cmd_context *cmd, const struct logical_volume *lv,
|
|
int wait, percent_t *percent, uint32_t *event_nr);
|
|
int lv_raid_percent(const struct logical_volume *lv, percent_t *percent);
|
|
int lv_raid_dev_health(const struct logical_volume *lv, char **dev_health);
|
|
int lv_raid_mismatch_count(const struct logical_volume *lv, uint64_t *cnt);
|
|
int lv_raid_sync_action(const struct logical_volume *lv, char **sync_action);
|
|
int lv_raid_message(const struct logical_volume *lv, const char *msg);
|
|
int lv_thin_pool_percent(const struct logical_volume *lv, int metadata,
|
|
percent_t *percent);
|
|
int lv_thin_percent(const struct logical_volume *lv, int mapped,
|
|
percent_t *percent);
|
|
int lv_thin_pool_transaction_id(const struct logical_volume *lv,
|
|
uint64_t *transaction_id);
|
|
|
|
/*
|
|
* Return number of LVs in the VG that are active.
|
|
*/
|
|
int lvs_in_vg_activated(const struct volume_group *vg);
|
|
int lvs_in_vg_opened(const struct volume_group *vg);
|
|
|
|
int lv_is_active(const struct logical_volume *lv);
|
|
int lv_is_active_but_not_locally(const struct logical_volume *lv);
|
|
int lv_is_active_exclusive(const struct logical_volume *lv);
|
|
int lv_is_active_exclusive_locally(const struct logical_volume *lv);
|
|
int lv_is_active_exclusive_remotely(const struct logical_volume *lv);
|
|
|
|
int lv_has_target_type(struct dm_pool *mem, struct logical_volume *lv,
|
|
const char *layer, const char *target_type);
|
|
|
|
int monitor_dev_for_events(struct cmd_context *cmd, struct logical_volume *lv,
|
|
const struct lv_activate_opts *laopts, int do_reg);
|
|
|
|
#ifdef DMEVENTD
|
|
# include "libdevmapper-event.h"
|
|
char *get_monitor_dso_path(struct cmd_context *cmd, const char *libpath);
|
|
int target_registered_with_dmeventd(struct cmd_context *cmd, const char *libpath,
|
|
struct logical_volume *lv, int *pending);
|
|
int target_register_events(struct cmd_context *cmd, const char *dso, struct logical_volume *lv,
|
|
int evmask __attribute__((unused)), int set, int timeout);
|
|
#endif
|
|
|
|
int add_linear_area_to_dtree(struct dm_tree_node *node, uint64_t size,
|
|
uint32_t extent_size, int use_linear_target,
|
|
const char *vgname, const char *lvname);
|
|
|
|
/*
|
|
* Returns 1 if PV has a dependency tree that uses anything in VG.
|
|
*/
|
|
int pv_uses_vg(struct physical_volume *pv,
|
|
struct volume_group *vg);
|
|
|
|
/*
|
|
* Returns 1 if mapped device is not suspended.
|
|
*/
|
|
int device_is_usable(struct device *dev);
|
|
|
|
/*
|
|
* Declaration moved here from fs.h to keep header fs.h hidden
|
|
*/
|
|
void fs_unlock(void);
|
|
|
|
#endif
|