| /Linux-v4.19/Documentation/device-mapper/ |
| D | snapshot.txt | 1 Device-mapper snapshot support
11 *) To merge a snapshot of a block device back into the snapshot's origin
18 For snapshot merge the contents of the COW storage are merged back into
23 snapshot, snapshot-origin, and snapshot-merge.
25 *) snapshot-origin <origin>
29 original data will be saved in the <COW device> of each snapshot to keep
33 *) snapshot <origin> <COW device> <persistent?> <chunksize>
35 A snapshot of the <origin> block device is created. Changed chunks of
39 smaller than the origin and if it fills up the snapshot will become
46 snapshot status. So supported store types are "P", "PO" and "N".
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| D | era.txt | 12 coherency after rolling back a vendor snapshot.
44 Drop the metadata snapshot.
65 snapshot was the primary use case when developing this target:
67 Taking a vendor snapshot
72 - Take vendor snapshot (the era and snapshot should be forever
75 Rolling back to an vendor snapshot
80 - Take metadata snapshot
81 - Ascertain which blocks have been written since the snapshot was taken
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| D | zero.txt | 11 conjunction with dm-snapshot. A sparse device reports a device-size larger
26 Then create a snapshot of the zero device, using any available block-device as
31 echo "0 $TEN_TERABYTES snapshot /dev/mapper/zero1 /dev/sdb1 p 128" | \
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| D | thin-provisioning.txt | 176 i) Creating an internal snapshot.
180 N.B. If the origin device that you wish to snapshot is active, you
181 must suspend it before creating the snapshot to avoid corruption.
191 ii) Using an internal snapshot.
194 between the origin and the snapshot. Indeed the snapshot is no
221 i) Creating a snapshot of an external device
228 ii) Using a snapshot of an external device.
234 N.B. All descendants (internal snapshots) of this snapshot require the
346 Create a new snapshot of another thinly-provisioned device.
350 of which the new device will be a snapshot.
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| /Linux-v4.19/tools/testing/selftests/ftrace/test.d/trigger/ |
| D | trigger-snapshot.tc | 27 if [ ! -f snapshot ]; then
35 FEATURE=`grep snapshot events/sched/sched_process_fork/trigger`
42 echo 0 > snapshot
47 grep sched_process_fork snapshot > /dev/null || \
51 echo 0 > snapshot
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| D | trigger-trace-marker-snapshot.tc | 9 echo 0 > snapshot
24 if [ ! -f snapshot ]; then
65 grep -q 'Snapshot is allocated' snapshot
70 test_trace snapshot 2
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| /Linux-v4.19/tools/testing/selftests/ftrace/test.d/00basic/ |
| D | snapshot.tc | 5 [ ! -f snapshot ] && exit_unsupported
11 echo 1 > snapshot
14 grep -q "Snapshot is allocated" snapshot
23 echo 1 > snapshot
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| /Linux-v4.19/Documentation/power/ |
| D | userland-swsusp.txt | 10 utilities that will read/write the system memory snapshot from/to the
19 be read from /sys/class/misc/snapshot/dev.
39 SNAPSHOT_CREATE_IMAGE - create a snapshot of the system memory; the
42 creating the snapshot (1) or after restoring the system memory state
44 SNAPSHOT_CREATE_IMAGE ioctl() again); after the snapshot
49 uploaded snapshot image; before calling it you should transfer
50 the system memory snapshot back to the kernel using the write()
51 operation; this call will not succeed if the snapshot
54 SNAPSHOT_FREE - free memory allocated for the snapshot image
99 The device's read() operation can be used to transfer the snapshot image from
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| /Linux-v4.19/kernel/power/ |
| D | swap.c | 533 struct snapshot_handle *snapshot, in save_image() argument
554 ret = snapshot_read_next(snapshot); in save_image()
557 ret = swap_write_page(handle, data_of(*snapshot), &hb); in save_image()
669 struct snapshot_handle *snapshot, in save_image_lzo() argument
774 ret = snapshot_read_next(snapshot); in save_image_lzo()
782 data_of(*snapshot), PAGE_SIZE); in save_image_lzo()
906 struct snapshot_handle snapshot; in swsusp_write() local
924 memset(&snapshot, 0, sizeof(struct snapshot_handle)); in swsusp_write()
925 error = snapshot_read_next(&snapshot); in swsusp_write()
932 header = (struct swsusp_info *)data_of(snapshot); in swsusp_write()
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| D | Makefile | 13 obj-$(CONFIG_HIBERNATION) += hibernate.o snapshot.o swap.o user.o
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| /Linux-v4.19/fs/nilfs2/ |
| D | sysfs.h | 89 NILFS_CP_ATTR_STRUCT(snapshot);
132 NILFS_INFO_ATTR(snapshot, name)
134 NILFS_RO_ATTR(snapshot, name)
136 NILFS_RW_ATTR(snapshot, name)
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| /Linux-v4.19/arch/x86/events/intel/ |
| D | bts.c | 64 bool snapshot; member
110 buf->snapshot = overwrite; in bts_buffer_setup_aux()
154 if (!buf->snapshot) { in bts_config_buffer()
171 ds->bts_interrupt_threshold = !buf->snapshot in bts_config_buffer()
196 if (!buf->snapshot) { in bts_update()
232 if (!buf->snapshot) in __bts_event_start()
318 if (buf->snapshot) in bts_event_stop()
376 if (buf->snapshot) in bts_buffer_reset()
476 if (buf->snapshot) in intel_bts_interrupt()
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| D | pt.c | 693 if (!buf->snapshot && !pt_cap_get(PT_CAP_topa_multiple_entries)) { in topa_insert_pages()
775 if (buf->snapshot) { in pt_update_head()
843 if (!pt_cap_get(PT_CAP_topa_multiple_entries) && !buf->snapshot && in pt_handle_status()
1024 if (buf->snapshot) in pt_buffer_reset_offsets()
1107 pt_buffer_setup_aux(int cpu, void **pages, int nr_pages, bool snapshot) in pt_buffer_setup_aux() argument
1125 buf->snapshot = snapshot; in pt_buffer_setup_aux()
1352 if (!buf->snapshot) { in pt_event_start()
1404 if (buf->snapshot) in pt_event_stop()
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| /Linux-v4.19/net/core/ |
| D | devlink.c | 363 struct devlink_snapshot *snapshot; in devlink_region_snapshot_get_by_id() local
365 list_for_each_entry(snapshot, ®ion->snapshot_list, list) in devlink_region_snapshot_get_by_id()
366 if (snapshot->id == id) in devlink_region_snapshot_get_by_id()
367 return snapshot; in devlink_region_snapshot_get_by_id()
372 static void devlink_region_snapshot_del(struct devlink_snapshot *snapshot) in devlink_region_snapshot_del() argument
374 snapshot->region->cur_snapshots--; in devlink_region_snapshot_del()
375 list_del(&snapshot->list); in devlink_region_snapshot_del()
376 (*snapshot->data_destructor)(snapshot->data); in devlink_region_snapshot_del()
377 kfree(snapshot); in devlink_region_snapshot_del()
3166 struct devlink_snapshot *snapshot) in devlink_nl_region_snapshot_id_put() argument
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| /Linux-v4.19/tools/perf/util/ |
| D | pmu.h | 41 bool snapshot; member
57 bool snapshot; member
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| D | pmu.c | 232 alias->snapshot = true; in perf_pmu__parse_snapshot()
269 old->snapshot = newalias->snapshot; in perf_pmu_update_alias()
326 alias->snapshot = false; in __perf_pmu__new_alias()
1177 (info->snapshot && alias->snapshot)) in check_info_data()
1186 if (alias->snapshot) in check_info_data()
1187 info->snapshot = alias->snapshot; in check_info_data()
1211 info->snapshot = false; in perf_pmu__check_alias()
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| /Linux-v4.19/Documentation/filesystems/ |
| D | nilfs2.txt | 18 full. Each snapshot is mountable as a read-only file system
57 cp=n Specify the checkpoint-number of the snapshot to be
59 user command. Only the checkpoints marked as snapshot
94 checkpoint and snapshot state. This ioctl is
161 mkcp make a checkpoint or a snapshot.
162 chcp change an existing checkpoint to a snapshot or vice versa.
165 To mount a snapshot,
169 where <cno> is the checkpoint number of the snapshot.
171 To unmount the NILFS2 mount point or snapshot, simply:
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| /Linux-v4.19/drivers/pwm/ |
| D | pwm-sti.c | 74 u32 snapshot[3]; member
372 high = ddata->snapshot[1] - ddata->snapshot[0]; in sti_pwm_capture()
373 low = ddata->snapshot[2] - ddata->snapshot[1]; in sti_pwm_capture()
444 &ddata->snapshot[ddata->index]); in sti_pwm_interrupt()
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| /Linux-v4.19/drivers/misc/echo/ |
| D | echo.c | 192 ec->snapshot = kcalloc(ec->taps, sizeof(int16_t), GFP_KERNEL); in oslec_create()
193 if (!ec->snapshot) in oslec_create()
229 kfree(ec->snapshot); in oslec_free()
268 memcpy(ec->snapshot, ec->fir_taps16[0], ec->taps * sizeof(int16_t)); in oslec_snapshot()
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| D | echo.h | 184 int16_t *snapshot; member
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| /Linux-v4.19/Documentation/ABI/testing/ |
| D | sysfs-bus-rbd | 12 The snapshot name can be "-" or omitted to map the image
14 device. If snapshot is used, it will be mapped read-only.
101 current_snap: (RO) The current snapshot for which the device
152 snap_id: (RO) The current snapshot's id.
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| /Linux-v4.19/drivers/perf/ |
| D | arm_spe_pmu.c | 56 bool snapshot; member
363 if (!buf->snapshot) in arm_spe_pmu_pad_buf()
503 limit = buf->snapshot ? arm_spe_pmu_next_snapshot_off(handle) in arm_spe_perf_aux_output_begin()
524 if (buf->snapshot) in arm_spe_perf_aux_output_end()
828 bool snapshot) in arm_spe_pmu_setup_aux() argument
844 if (!nr_pages || (snapshot && (nr_pages & 1))) in arm_spe_pmu_setup_aux()
874 buf->snapshot = snapshot; in arm_spe_pmu_setup_aux()
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| /Linux-v4.19/fs/qnx6/ |
| D | README | 2 This is a snapshot of the QNX6 filesystem for Linux.
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| /Linux-v4.19/fs/qnx4/ |
| D | README | 2 This is a snapshot of the QNX4 filesystem for Linux.
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| /Linux-v4.19/net/ceph/ |
| D | Makefile | 17 pagevec.o snapshot.o string_table.o
|
