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Jeff Cody 3722290074 block: update block commit documentation regarding image truncation 
This updates the documentation for commiting snapshot images.
Specifically, this highlights what happens when the base image
is either smaller or larger than the snapshot image being committed.

In the case of the base image being smaller, it is resized to the
larger size of the snapshot image.  In the case of the base image
being larger, it is not resized automatically, but once the commit
has completed it is safe for the user to truncate the base image.

Signed-off-by: Jeff Cody <jcody@redhat.com>
Reviewed-by: Fam Zheng <famz@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2014-01-24 16:12:49 +01:00
audio audio: adjust pulse to 100Hz wakeup rate 2013-12-09 09:19:26 +01:00
backends rng: initialize file descriptor to -1 2014-01-06 13:45:46 -05:00
block block: resize backing image during active layer commit, if needed 2014-01-24 16:12:49 +01:00
bsd-user *-user: Improve documentation for lock_user function 2013-09-20 20:09:24 +04:00
default-configs default-configs: Add config for aarch64-linux-user 2014-01-08 19:07:21 +00:00
disas disas/ppc.c: Fix little endian disassembly 2013-09-02 10:06:41 +02:00
docs docs/memory.txt: Clarify and expand priority/overlap documentation 2013-11-05 19:59:24 -08:00
dtc@bc895d6d09 dtc: add submodule 2013-04-18 13:50:53 +02:00
fpu softfloat: Add support for ties-away rounding 2014-01-08 19:07:22 +00:00
fsdev fsdev: Fix potential memory leak 2013-07-09 13:38:56 -05:00
gdb-xml target-arm: Support fp registers in gdb stub 2013-12-17 19:42:32 +00:00
hw dataplane: fix shadowed return value 2014-01-22 13:48:18 +01:00
include block: Create authorizations mechanism for external snapshot and resize. 2014-01-24 16:07:08 +01:00
libcacard vscclient: do not add a socket watch if there is not data to send 2013-12-16 10:12:19 +01:00
linux-headers linux-headers: Update from v3.13-rc3 2013-12-06 11:16:09 -07:00
linux-user linux-user: Remove regs parameter of load_elf_binary and load_flt_binary 2014-01-10 08:51:37 +02:00
net misc: Use macro ARRAY_SIZE where possible 2013-12-23 16:02:19 +04:00
pc-bios roms: update vgabios binaries 2013-12-06 08:55:42 +01:00
pixman@97336fad32 qapi: move include files to include/qobject/ 2012-12-19 08:31:31 +01:00
po po: Update all *.po files 2013-08-07 12:48:00 -05:00
qapi qapi: fix memleak by adding implict struct functions in dealloc visitor 2013-11-05 19:58:38 -08:00
qga qga: Fix two format strings for MinGW 2013-11-25 20:35:28 -08:00
qobject qapi: extend qdict_flatten() for QLists 2014-01-22 12:07:17 +01:00
qom Merge remote branch 'luiz/queue/qmp' into qmpq 2014-01-14 12:10:08 +10:00
roms roms: enable seabios cross builds 2013-12-06 08:55:42 +01:00
scripts qapi: Add "errno" to the list of polluted words 2014-01-22 12:07:18 +01:00
slirp misc: Spelling and grammar fixes in comments 2013-10-26 13:06:45 +04:00
stubs Merge remote-tracking branch 'kiszka/queues/slirp' into staging 2013-09-17 10:01:24 -05:00
sysconfigs/target Eliminate cpus-x86_64.conf file 2012-09-21 15:12:58 +02:00
target-alpha misc: Replace 'struct QEMUTimer' by 'QEMUTimer' 2013-12-02 21:03:39 +04:00
target-arm Merge remote branch 'luiz/queue/qmp' into qmpq 2014-01-14 12:10:08 +10:00
target-cris target-cris: Use new qemu_ld/st opcodes 2013-12-08 09:36:02 +01:00
target-i386 Merge remote branch 'luiz/queue/qmp' into qmpq 2014-01-14 12:10:08 +10:00
target-lm32 target: Include softmmu_exec.h where forgotten 2013-09-02 09:08:30 -07:00
target-m68k Merge remote-tracking branch 'rth/tcg-pull' into staging 2013-10-11 09:36:52 -07:00
target-microblaze Microblaze: Convert Microblaze-pic handling to GPIOs 2014-01-14 11:08:36 +10:00
target-mips target-mips: Use new qemu_ld/st opcodes 2013-12-21 16:42:11 +01:00
target-moxie cpu: Drop cpu_model_str from CPU_COMMON 2013-10-07 11:48:47 +02:00
target-openrisc openrisc: Fix spelling in comment (transaltion -> translation) 2013-12-23 16:02:19 +04:00
target-ppc PPC: Fix compilation with TCG debug 2013-12-22 19:15:55 +01:00
target-s390x s390x/ioinst: CHSC has to set a condition code 2013-12-18 14:24:11 +01:00
target-sh4 target-sh4: Use new qemu_ld/st opcodes 2013-12-21 16:42:15 +01:00
target-sparc SPARC: Fix LEON3 power down instruction 2014-01-15 15:37:33 +10:00
target-unicore32 Merge remote-tracking branch 'rth/tcg-pull' into staging 2013-10-11 09:36:52 -07:00
target-xtensa target-xtensa: add missing DEBUG section to dc233c config 2013-11-08 09:26:07 +04:00
tcg tcg/i386: fix a comment 2013-12-21 16:41:56 +01:00
tests vmdk: Check for overhead when opening 2014-01-24 14:33:00 +01:00
trace trace: Add ftrace tracing backend 2013-05-03 13:58:09 +02:00
ui ui/cocoa: Remove stray tabs 2014-01-12 22:27:10 +00:00
util qemu-progress: Fix progress printing on SIGUSR1 2014-01-24 14:33:00 +01:00
.exrc qemu: add .exrc 2012-09-07 09:02:44 +03:00
.gitignore .gitignore: Ignore config.status 2013-12-02 21:02:57 +04:00
.gitmodules Use qemu-project.org domain name 2013-10-11 09:34:56 -07:00
.mailmap Update mailmap 2013-09-05 09:40:31 -05:00
.travis.yml .travis.yml: Add aarch64-* targets 2014-01-08 19:07:20 +00:00
aio-posix.c aio: make aio_poll(ctx, true) block with no fds 2013-12-06 16:53:51 +01:00
aio-win32.c aio: make aio_poll(ctx, true) block with no fds 2013-12-06 16:53:51 +01:00
arch_init.c migration: synchronize memory bitmap 64bits at a time 2014-01-13 14:04:55 +01:00
async.c aio / timers: aio_ctx_prepare sets timeout from AioContext timers 2013-08-22 19:10:28 +02:00
balloon.c softmmu: move include files to include/sysemu/ 2012-12-19 08:32:45 +01:00
block-migration.c block: per caller dirty bitmap 2013-11-29 13:40:33 +01:00
block.c block: resize backing file image during offline commit, if necessary 2014-01-24 16:12:49 +01:00
blockdev-nbd.c nbd: use BlockDriverState refcnt 2013-09-06 15:25:08 +02:00
blockdev.c qmp: Allow to take external snapshots on bs graphs node. 2014-01-24 16:07:08 +01:00
blockjob.c qapi: make use of new BlockJobType 2013-10-11 10:52:54 +02:00
bt-host.c sysemu: avoid proliferation of include/ subdirectories 2013-04-15 18:19:25 +02:00
bt-vhci.c sysemu: avoid proliferation of include/ subdirectories 2013-04-15 18:19:25 +02:00
Changelog Use qemu-project.org domain name 2013-10-11 09:34:56 -07:00
CODING_STYLE Replace Qemu by QEMU in internal documentation 2012-04-07 13:58:25 +00:00
configure gluster: Implement .bdrv_co_write_zeroes for gluster 2014-01-22 12:07:16 +01:00
COPYING
COPYING.LIB
coroutine-gthread.c block: move include files to include/block/ 2012-12-19 08:31:31 +01:00
coroutine-sigaltstack.c Merge remote-tracking branch 'kwolf/for-anthony' into staging 2013-02-26 07:44:39 -06:00
coroutine-ucontext.c Fix warnings suppressors to honor --disable-werror 2013-04-17 10:28:04 -05:00
coroutine-win32.c block: move include files to include/block/ 2012-12-19 08:31:31 +01:00
cpu-exec.c QOM CPUState refactorings / X86CPU 2014-01-10 11:04:31 -08:00
cpus.c target-i386: Move apic_state field from CPUX86State to X86CPU 2013-12-23 16:30:40 +01:00
cputlb.c memory: split cpu_physical_memory_* functions to its own include 2014-01-13 14:04:54 +01:00
device_tree.c device_tree: qemu_fdt_setprop: Rename val_array arg 2013-12-20 01:58:12 +01:00
device-hotplug.c hw: move device-hotplug.o to toplevel, compile it once 2013-03-01 13:57:13 +01:00
disas.c disas: Implement fallback to dump object code as hex 2013-08-24 07:26:45 +02:00
dma-helpers.c aio / timers: Untangle include files 2013-08-22 19:10:27 +02:00
dump.c dump-guest-memory: Check for the correct return value 2013-10-25 23:25:48 +02:00
exec.c memory: split cpu_physical_memory_* functions to its own include 2014-01-13 14:04:54 +01:00
gdbstub.c vl: allow "cont" from panicked state 2013-11-04 15:39:41 +02:00
HACKING HACKING: Document vaddr type usage 2013-07-23 02:41:31 +02:00
hmp-commands.hx block: update block commit documentation regarding image truncation 2014-01-24 16:12:49 +01:00
hmp.c qmp: Allow to take external snapshots on bs graphs node. 2014-01-24 16:07:08 +01:00
hmp.h monitor: add object-add (QMP) and object_add (HMP) command 2014-01-06 13:45:47 -05:00
iohandler.c iohandler: switch to GPollFD 2013-02-21 16:17:31 -06:00
ioport.c portio: Allow to mark portio lists as coalesced MMIO flushing 2013-10-17 17:24:15 +02:00
kvm-all.c memory: move bitmap synchronization to its own function 2014-01-13 14:04:55 +01:00
kvm-stub.c kvm irqfd: support direct msimessage to irq translation 2013-09-20 12:37:52 +02:00
LICENSE LICENSE: clarify 2013-08-12 09:15:12 -05:00
main-loop.c slirp: set mainloop timeout with more precise value 2013-09-17 12:26:05 +02:00
MAINTAINERS MAINTAINERS: add myself as cocoa UI co-maintainer 2014-01-12 22:27:10 +00:00
Makefile sun4m: Add FCode ROM for TCX framebuffer 2013-11-21 17:38:52 +01:00
Makefile.objs readline: move readline to a generic location 2014-01-22 12:07:17 +01:00
Makefile.target default-configs/: CONFIG_GDBSTUB_XML removed 2013-10-16 18:21:01 +02:00
memory_mapping.c cpu: Use QTAILQ for CPU list 2013-09-03 12:25:55 +02:00
memory.c memory: split cpu_physical_memory_* functions to its own include 2014-01-13 14:04:54 +01:00
migration-exec.c aio / timers: Untangle include files 2013-08-22 19:10:27 +02:00
migration-fd.c aio / timers: Untangle include files 2013-08-22 19:10:27 +02:00
migration-rdma.c rdma: constify ram_chunk_{index, start, end} 2013-09-24 13:22:50 +02:00
migration-tcp.c aio / timers: Untangle include files 2013-08-22 19:10:27 +02:00
migration-unix.c aio / timers: Untangle include files 2013-08-22 19:10:27 +02:00
migration.c Merge remote branch 'luiz/queue/qmp' into qmpq 2014-01-14 12:10:08 +10:00
monitor.c readline: move readline to a generic location 2014-01-22 12:07:17 +01:00
nbd.c nbd: don't change socket block during negotiate 2013-12-16 10:12:20 +01:00
os-posix.c Add option to mlock qemu and guest memory 2013-04-22 08:52:23 -05:00
os-win32.c qemu-timer: move timeBeginPeriod/timeEndPeriod to os-win32 2013-04-12 18:27:16 +02:00
page_cache.c remove some double-includes 2013-05-18 16:35:12 +04:00
qapi-schema.json block: update block commit documentation regarding image truncation 2014-01-24 16:12:49 +01:00
qdev-monitor.c Merge remote branch 'luiz/queue/qmp' into qmpq 2014-01-14 12:10:08 +10:00
qdict-test-data.txt Introduce QDict test data file 2009-09-04 09:37:34 -05:00
qemu-bridge-helper.c qemu-bridge-helper: force usage of a very high MAC address for the bridge 2013-03-28 12:58:52 -05:00
qemu-char.c misc: Use macro ARRAY_SIZE where possible 2013-12-23 16:02:19 +04:00
qemu-coroutine-io.c aio / timers: Untangle include files 2013-08-22 19:10:27 +02:00
qemu-coroutine-lock.c coroutine: remove qemu_co_queue_wait_insert_head 2013-12-02 17:11:49 +01:00
qemu-coroutine-sleep.c coroutine: add co_aio_sleep_ns() to allow sleep in block drivers 2013-10-30 12:22:09 +01:00
qemu-coroutine.c coroutine: add ./configure --disable-coroutine-pool 2013-09-12 10:12:48 +02:00
qemu-doc.texi docs: qcow2 compat=1.1 is now the default 2014-01-22 12:07:16 +01:00
qemu-file.c qemu-file: Move QEMUFile code to qemu-file.c 2014-01-13 12:39:49 +01:00
qemu-img-cmds.hx qemu-img: add -l for snapshot in convert 2013-12-04 15:19:00 +01:00
qemu-img.c qemu-option: Remove qemu_opts_create_nofail 2014-01-06 15:02:30 -05:00
qemu-img.texi block: update block commit documentation regarding image truncation 2014-01-24 16:12:49 +01:00
qemu-io-cmds.c qemu-io: add command completion 2014-01-22 12:07:17 +01:00
qemu-io.c qemu-io: Make filename optional 2014-01-22 12:07:18 +01:00
qemu-log.c qemu-log: default to stderr for logging output 2013-02-26 13:31:47 -06:00
qemu-nbd.c qemu-nbd: add doc for option -f 2013-12-04 15:19:00 +01:00
qemu-nbd.texi qemu-nbd: add doc for option -f 2013-12-04 15:19:00 +01:00
qemu-options-wrapper.h vl.c: In qemu -h output, only print options for the arch we are running as 2011-12-19 10:27:33 -06:00
qemu-options.h vl.c: Move option generation logic into a wrapper file 2011-12-19 10:27:33 -06:00
qemu-options.hx doc: Mention chardev:id in available devices for -serial 2014-01-01 18:03:55 +04:00
qemu-seccomp.c seccomp: exit if seccomp_init() fails 2013-12-20 16:38:29 -02:00
qemu-tech.texi qemu-tech.texi: update implemented xtensa features list 2012-11-29 13:00:52 -06:00
qemu-timer.c timer: add timer_mod_anticipate and timer_mod_anticipate_ns 2013-10-17 17:31:00 +02:00
qemu.nsi nsis: Improved support for parallel installation of 32 and 64 bit code 2013-11-07 07:02:44 +01:00
qemu.sasl Fix command example in qemu.sasl 2013-07-19 12:52:03 +04:00
qmp-commands.hx block: update block commit documentation regarding image truncation 2014-01-24 16:12:49 +01:00
qmp.c monitor: add object-add (QMP) and object_add (HMP) command 2014-01-06 13:45:47 -05:00
qtest.c qtest: split configuration of qtest accelerator and chardev 2013-12-10 12:29:56 +02:00
README Use qemu-project.org domain name 2013-10-11 09:34:56 -07:00
rules.mak rules.mak: New string testing functions 2013-10-16 18:21:00 +02:00
savevm.c savevm: Small comment about why timer QEMUFile/VMState code is in savevm.c 2014-01-13 12:39:49 +01:00
spice-qemu-char.c spice-char: implement chardev port event 2013-12-16 10:12:20 +01:00
tcg-runtime.c tcg: Implement multiword multiply helpers 2013-02-23 17:25:28 +00:00
tci.c misc: Use new rotate functions 2013-09-25 21:23:05 +02:00
thread-pool.c aio / timers: Untangle include files 2013-08-22 19:10:27 +02:00
thunk.c exec: move include files to include/exec/ 2012-12-19 08:31:31 +01:00
tpm.c tpm.c: Don't try to put -1 in a variable of type TpmModel 2013-07-29 10:37:10 -05:00
trace-events Merge remote-tracking branch 'stefanha/block' into staging 2013-12-07 07:35:31 -08:00
translate-all.c cputlb: Tidy memset() of arrays 2013-12-23 15:32:36 +01:00
translate-all.h split definitions for exec.c and translate-all.c radix trees 2013-12-10 12:29:56 +02:00
user-exec.c linux-user: fix segmentation fault passing with h2g(x) != x 2013-07-23 17:28:28 +03:00
VERSION Open 2.0 development tree 2013-11-27 14:02:45 -08:00
version.rc Use qemu-project.org domain name 2013-10-11 09:34:56 -07:00
vl.c Merge remote branch 'luiz/queue/qmp' into qmpq 2014-01-14 12:10:08 +10:00
vmstate.c vmstate: Move VMState code to vmstate.c 2014-01-13 12:39:49 +01:00
xbzrle.c Move XBZRLE encoding code to a separate file to allow testing 2013-02-01 08:32:20 +01:00
xen-all.c xen: fix two errors when debug is enabled 2013-12-01 18:25:48 +00:00
xen-mapcache.c hw: move headers to include/ 2013-04-08 18:13:10 +02:00
xen-stub.c pc: Initializing ram_memory under Xen. 2013-09-09 16:22:19 +00:00

README 

Read the documentation in qemu-doc.html or on http://wiki.qemu-project.org

- QEMU team