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/linux-4.1.27/Documentation/device-mapper/
Dsnapshot.txt1 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
49 * snapshot-merge <origin> <COW device> <persistent> <chunksize>
[all …]
Dera.txt12 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
Dzero.txt11 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" | \
Dthin-provisioning.txt173 i) Creating an internal snapshot.
177 N.B. If the origin device that you wish to snapshot is active, you
178 must suspend it before creating the snapshot to avoid corruption.
188 ii) Using an internal snapshot.
191 between the origin and the snapshot. Indeed the snapshot is no
218 i) Creating a snapshot of an external device
225 ii) Using a snapshot of an external device.
231 N.B. All descendants (internal snapshots) of this snapshot require the
327 Create a new snapshot of another thinly-provisioned device.
331 of which the new device will be a snapshot.
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Dkcopyd.txt6 notification. It is used by dm-snapshot and dm-mirror.
Dpersistent-data.txt11 - Another multi-snapshot target based on a design of Daniel Phillips
/linux-4.1.27/Documentation/power/
Duserland-swsusp.txt10 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
[all …]
Dswsusp.txt243 with state snapshot
245 state snapshot: copy of whole used memory is taken with interrupts disabled
Ddevices.txt496 image forms an atomic snapshot of the system state.
/linux-4.1.27/kernel/power/
Dswap.c441 struct snapshot_handle *snapshot, in save_image() argument
461 ret = snapshot_read_next(snapshot); in save_image()
464 ret = swap_write_page(handle, data_of(*snapshot), &bio); in save_image()
576 struct snapshot_handle *snapshot, in save_image_lzo() argument
682 ret = snapshot_read_next(snapshot); in save_image_lzo()
690 data_of(*snapshot), PAGE_SIZE); in save_image_lzo()
817 struct snapshot_handle snapshot; in swsusp_write() local
835 memset(&snapshot, 0, sizeof(struct snapshot_handle)); in swsusp_write()
836 error = snapshot_read_next(&snapshot); in swsusp_write()
843 header = (struct swsusp_info *)data_of(snapshot); in swsusp_write()
[all …]
DMakefile10 obj-$(CONFIG_HIBERNATION) += hibernate.o snapshot.o swap.o user.o \
/linux-4.1.27/arch/x86/kernel/cpu/
Dperf_event_intel_bts.c54 bool snapshot; member
104 buf->snapshot = overwrite; in bts_buffer_setup_aux()
148 if (!buf->snapshot) { in bts_config_buffer()
165 ds->bts_interrupt_threshold = !buf->snapshot in bts_config_buffer()
179 if (buf->snapshot) in bts_buffer_is_full()
202 if (!buf->snapshot) { in bts_update()
230 if (!buf->snapshot) in __bts_event_start()
309 if (buf->snapshot) in bts_buffer_reset()
396 if (!buf || buf->snapshot) in intel_bts_interrupt()
429 if (buf->snapshot) in bts_event_del()
Dperf_event_intel_pt.c395 if (!buf->snapshot && !pt_cap_get(PT_CAP_topa_multiple_entries)) { in topa_insert_pages()
477 if (buf->snapshot) { in pt_update_head()
544 if (!pt_cap_get(PT_CAP_topa_multiple_entries) && !buf->snapshot && in pt_handle_status()
621 if (buf->snapshot) in pt_buffer_reset_markers()
714 if (buf->snapshot) in pt_buffer_reset_offsets()
797 pt_buffer_setup_aux(int cpu, void **pages, int nr_pages, bool snapshot) in pt_buffer_setup_aux() argument
815 buf->snapshot = snapshot; in pt_buffer_setup_aux()
852 if (buf->snapshot) in pt_buffer_is_full()
986 if (buf->snapshot) in pt_event_del()
1011 if (!buf->snapshot) { in pt_event_add()
Dintel_pt.h115 bool snapshot; member
Dperf_event_intel_cqm.c1140 EVENT_ATTR_STR(llc_occupancy.snapshot, intel_cqm_llc_snapshot, "1");
/linux-4.1.27/fs/nilfs2/
Dsysfs.h98 NILFS_CP_ATTR_STRUCT(snapshot);
141 NILFS_INFO_ATTR(snapshot, name)
143 NILFS_RO_ATTR(snapshot, name)
145 NILFS_RW_ATTR(snapshot, name)
DKconfig17 snapshot is mountable as a read-only file system concurrently with
/linux-4.1.27/tools/perf/util/
Dpmu.h33 bool snapshot; member
45 bool snapshot; member
Dpmu.c196 alias->snapshot = true; in perf_pmu__parse_snapshot()
725 (info->snapshot && alias->snapshot)) in check_info_data()
734 if (alias->snapshot) in check_info_data()
735 info->snapshot = alias->snapshot; in check_info_data()
759 info->snapshot = false; in perf_pmu__check_alias()
Devsel.h76 bool snapshot; member
Dparse-events.c672 evsel->snapshot = info.snapshot; in parse_events_add_pmu()
/linux-4.1.27/Documentation/filesystems/
Dnilfs2.txt18 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:
Dqnx6.txt38 In write mode with reach new snapshot (after each synchronous write), the
41 So basically the snapshot functionality is realized by an atomic final
164 The rational behind that is that a write request can work on a new snapshot
Dpath-lookup.txt184 dentry seqlock (d_seq) is used to take a "coherent snapshot" of what the dentry
185 looks like (its name, parent, and inode). That snapshot is then used to start
186 the next part of the path walk. When loading the coherent snapshot under d_seq,
226 path string, rcu-walk uses a d_seq protected snapshot. When looking up a
227 child of this parent snapshot, we open d_seq critical section on the child
278 parent snapshot fails, the house comes down, because we had closed the d_seq
Dceph.txt53 Ceph includes flexible snapshot mechanism that allows a user to create
54 a snapshot on any subdirectory (and its nested contents) in the
Dbtrfs.txt126 operations). This was previously the behavior only when a snapshot is
Dxfs.txt176 system uuid. This is useful to mount LVM snapshot volumes,
Dproc.txt206 snapshot of a moment, you can see /proc/<pid>/smaps file and scan page table.
/linux-4.1.27/Documentation/ABI/testing/
Dsysfs-bus-rbd13 The snapshot name can be "-" or omitted to map the image read/write. A <dev-id>
14 will be assigned for any registered block device. If snapshot is used, it will
93 The current snapshot for which the device is mapped.
Dsysfs-devices5 The /sys/devices tree contains a snapshot of the
Dsysfs-fs-nilfs2256 Show number of inodes for snapshot.
262 Show number of blocks for snapshot.
Dsysfs-devices-memory5 The /sys/devices/system/memory contains a snapshot of the
Dsysfs-class-devfreq72 This is a snapshot of available frequencies and not limited
Dsysfs-kernel-slab7 The /sys/kernel/slab directory contains a snapshot of the
/linux-4.1.27/drivers/misc/echo/
Decho.c265 ec->snapshot = kcalloc(ec->taps, sizeof(int16_t), GFP_KERNEL); in oslec_create()
266 if (!ec->snapshot) in oslec_create()
302 kfree(ec->snapshot); in oslec_free()
341 memcpy(ec->snapshot, ec->fir_taps16[0], ec->taps * sizeof(int16_t)); in oslec_snapshot()
Decho.h184 int16_t *snapshot; member
/linux-4.1.27/fs/qnx6/
DREADME2 This is a snapshot of the QNX6 filesystem for Linux.
/linux-4.1.27/fs/qnx4/
DREADME2 This is a snapshot of the QNX4 filesystem for Linux.
/linux-4.1.27/net/ceph/
DMakefile14 pagevec.o snapshot.o
/linux-4.1.27/Documentation/trace/
Devents.txt438 - snapshot
440 This command causes a snapshot to be triggered whenever the
443 The following command creates a snapshot every time a block request
445 events or functions at the time, the snapshot trace buffer would
448 # echo 'snapshot if nr_rq > 1' > \
451 To only snapshot once:
453 # echo 'snapshot:1 if nr_rq > 1' > \
458 # echo '!snapshot if nr_rq > 1' > \
461 # echo '!snapshot:1 if nr_rq > 1' > \
464 Note that there can be only one snapshot trigger per triggering
Dftrace.txt290 snapshot:
292 This displays the "snapshot" buffer and also lets the user
293 take a snapshot of the current running trace.
446 per_cpu/cpu0/snapshot:
448 This is similar to the main "snapshot" file, but will only
449 snapshot the current CPU (if supported). It only displays
450 the content of the snapshot for a given CPU, and if
456 from the snapshot buffer for the given CPU.
1989 system clock since it started. A snapshot of this time is
2434 - snapshot
[all …]
/linux-4.1.27/drivers/md/
DMakefile8 dm-snapshot-y += dm-snap.o dm-exception-store.o dm-snap-transient.o \
47 obj-$(CONFIG_DM_SNAPSHOT) += dm-snapshot.o
/linux-4.1.27/Documentation/video4linux/
Dmeye.txt113 Takes a snapshot in an uncompressed or compressed jpeg format.
114 This ioctl blocks until the snapshot is done and returns (for
115 jpeg snapshot) the size of the image. The image data is
DREADME.cx8847 (1) Try upgrading to the latest snapshot, maybe it has been added
DREADME.ir11 from http://bytesex.org/snapshot/input-<date>.tar.gz
DREADME.pvrusb218 last known snapshot and evolved the driver to the state it is in
143 in the standalone snapshot).
/linux-4.1.27/arch/parisc/math-emu/
DREADME10 in any way. This copy of this snapshot is no longer the property
/linux-4.1.27/drivers/media/usb/pwc/
DKconfig45 This option makes USB Philips cameras register the snapshot button as
/linux-4.1.27/kernel/trace/
DKconfig242 bool "Create a snapshot trace buffer"
245 Allow tracing users to take snapshot of the current buffer using the
248 echo 1 > /sys/kernel/debug/tracing/snapshot
249 cat snapshot
252 bool "Allow snapshot to swap per CPU"
256 Allow doing a snapshot of a single CPU buffer instead of a
260 echo 1 > /sys/kernel/debug/tracing/per_cpu/cpu2/snapshot
Dtrace.c2475 if (iter->snapshot && iter->trace->use_max_tr) in s_start()
2479 if (!iter->snapshot) in s_start()
2520 if (iter->snapshot && iter->trace->use_max_tr) in s_stop()
2524 if (!iter->snapshot) in s_stop()
2972 if (iter->snapshot && trace_empty(iter)) in s_show()
3024 __tracing_open(struct inode *inode, struct file *file, bool snapshot) in __tracing_open() argument
3060 if (tr->current_trace->print_max || snapshot) in __tracing_open()
3065 iter->snapshot = snapshot; in __tracing_open()
3083 if (!iter->snapshot) in __tracing_open()
3175 if (!iter->snapshot) in tracing_release()
[all …]
/linux-4.1.27/include/linux/
Dnilfs2_fs.h557 NILFS_CHECKPOINT_FNS(SNAPSHOT, snapshot)
590 NILFS_CPINFO_FNS(SNAPSHOT, snapshot)
Dftrace_event.h94 bool snapshot; member
/linux-4.1.27/Documentation/sound/alsa/
Dtimestamping.txt3 - Trigger_tstamp is the system time snapshot taken when the .trigger
4 callback is invoked. This snapshot is taken by the ALSA core in the
30 along with a snapshot of system time. Applications can select from
DHD-Audio.txt660 way to try the latest ALSA code is to build from the snapshot
661 tarball. There are daily tarballs and the latest snapshot tarball.
664 install(-modules). See INSTALL in the package. The snapshot tarballs
667 - ftp://ftp.suse.com/pub/people/tiwai/snapshot/
/linux-4.1.27/drivers/scsi/isci/
Dscu_task_context.h866 struct transport_snapshot snapshot; /* read only set to 0 */ member
/linux-4.1.27/Documentation/block/
Dstat.txt12 represent a consistent snapshot of the state of the device. If the
/linux-4.1.27/Documentation/ko_KR/
DHOWTO289 커널 트리의 snapshot 들이 있다. 이 패치들은 일반적으로 날마다 배포되며
/linux-4.1.27/arch/powerpc/boot/dts/
Dacadia.dts176 * that it uses to generate snapshot triggers. We
/linux-4.1.27/Documentation/
Dgdb-kernel-debugging.txt147 this is just a snapshot of the initial version:
Drfkill.txt100 userspace is able to get a consistent snapshot of all rfkill devices in the
Diostats.txt40 each snapshot of your disk statistics.
Dedac.txt30 is also a tarball snapshot available.
Ddevices.txt448 231 = /dev/snapshot System memory snapshot device
Dkernel-parameters.txt418 Allocate the ftrace snapshot buffer on boot up when the
/linux-4.1.27/mm/
Dpage-writeback.c1141 goto snapshot; in __bdi_update_bandwidth()
1151 snapshot: in __bdi_update_bandwidth()
DKconfig306 # a major rework effort. Instead, use the bounce buffer to snapshot pages
/linux-4.1.27/Documentation/networking/
DREADME.ipw2200169 of the ipw2200 development snapshot releases available from the
403 development snapshot releases.
/linux-4.1.27/drivers/net/wireless/ipw2x00/
Dipw2100.c2326 #define SNAPSHOT_ADDR(ofs) (priv->snapshot[((ofs) >> 12) & 0xff] + ((ofs) & 0xfff))
2330 if (!priv->snapshot[0]) in ipw2100_snapshot_free()
2333 kfree(priv->snapshot[i]); in ipw2100_snapshot_free()
2334 priv->snapshot[0] = NULL; in ipw2100_snapshot_free()
2341 if (priv->snapshot[0]) in ipw2100_snapshot_alloc()
2344 priv->snapshot[i] = kmalloc(0x1000, GFP_ATOMIC); in ipw2100_snapshot_alloc()
2345 if (!priv->snapshot[i]) { in ipw2100_snapshot_alloc()
2349 kfree(priv->snapshot[--i]); in ipw2100_snapshot_alloc()
2350 priv->snapshot[0] = NULL; in ipw2100_snapshot_alloc()
3878 if (priv->snapshot[0]) in show_memory()
[all …]
Dipw2100.h516 u8 *snapshot[0x30]; member
/linux-4.1.27/Documentation/ABI/stable/
Dsysfs-class-tpm93 for a snapshot in time.
/linux-4.1.27/tools/perf/
Dbuiltin-stat.c447 if (!evsel->snapshot) in read_cb()
485 if (!counter->snapshot) in read_counter_aggr()
/linux-4.1.27/Documentation/fb/
Dframebuffer.txt45 read and write their contents. You can, for example, make a screen snapshot by
/linux-4.1.27/drivers/scsi/aic7xxx/
Daic79xx.seq1486 * that a FIFO will be freed to handle snapshot requests for
1879 * Switch to the active FIFO after clearing the snapshot
1910 * The first is a snapshot save pointers where the current FIFO is not
1911 * active and contains a snapshot of the current poniter information.
1916 * of snapshot is not active.
/linux-4.1.27/Documentation/development-process/
D2.Process285 Stephen Rothwell. The linux-next tree is, by design, a snapshot of what
/linux-4.1.27/Documentation/sysctl/
Dvm.txt699 why oom happens. You can get snapshot.
/linux-4.1.27/Documentation/RCU/
DRTFP.txt2160 readers to confine themselves to the desired snapshot of the
2571 readers to confine themselves to the desired snapshot of the