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This is a short (10-15 min) talk that I give to introduce the main
features of libguestfs. The "slides" are in the form of a complete
self-contained HTML page with a handful images that can be easily
distributed before the talk.
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When given an invalid debug command, libguestfs responds with the
error message:
libguestfs: error: debug: use 'debug help' to list the supported commands
However this command does not work, as debug requires two
arguments. This change updates the message to prompt the user to use
'debug help 0'.
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Because this is a useful introspection API, it is a candidate for
being backported into older stable branches.
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This warning was applied unevenly. Potentially any command can be
dangerous or safe, so it was a needless warning.
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This dependency is optional, don't fail the test if it's not
installed.
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This dependency is optional, so don't fail the test if it
is not installed.
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(thanks Matt Booth).
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size_after on Debian was 10136K. The host filesystem was ext3 (vs
ext4 for Fedora where we did the original testing). Probably indirect
blocks (vs more efficient extents on ext4) causes the difference,
although I did not look at it in detail.
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Tools like virt-edit would not be able to edit disks marked as
<readonly/> in the libvirt XML. It's not clear if this is a bug or a
feature.
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This optional argument controls how <readonly/> disks in
the libvirt XML are handled. It can be set to one of:
"write" (default) - add them R/W
"read" - add them R/O
"error" - throw an error if asked to add them R/W
"ignore" - ignore these disks
I have added limited regression tests for this feature. However
libvirt's test:/// XML does not allow you to specify that a domain
starts off shut down, so we cannot fully test this. Instead I tested
it by hand.
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This changes the private function guestfs___for_each_disk so that the
<readonly/> flag on libvirt disks is detected and passed through to
the callback function.
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Use a Gaussian distribution for random numbers so that smaller numbers
are chosen more frequently.
This also exposes a bug in this test which only happens when small
numbers are chosen:
If the test thread starts up quickly, it can get to
guestfs_user_cancel before the guestfs_upload command has happened in
the main thread. This causes the cancel to be ignored (correctly) and
we end up in the second loop writing data until the disk runs out of
space. Fix this by repeatedly asserting the cancel flag in the second
loop.
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Commit 2910413850c7d9e8df753afad179e415f0638d6d caused Windows 7
resizes to break with the 0xc0000225 boot error.
Change the --align-first auto (default) option so that it is more
conservative about when it moves the first partition. In particular
it doesn't move it if it's already aligned (as it is for Win7), nor if
there is more than one partition (also Win7).
Tested with: Windows XP, 2003, 7, Ubuntu 10.10 and RHEL 5.
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Also we only permit MBR (DOS) and GPT partition tables. In theory
previously we allowed other partition table types, but it is unlikely
that it would have worked in reality.
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The four new APIs:
guestfs_copy_device_to_device,
guestfs_copy_device_to_file,
guestfs_copy_file_to_device, and
guestfs_copy_file_to_file
let you copy from a source to a destination, between files and
devices, optionally allowing source and destination offsets and size
to be specified.
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Add a dependency so these tools are rebuilt from scratch if the
Guestfs API changes. This prevents the error:
"[...] make inconsistent assumptions over interface Guestfs".
This commit includes the generated changes to .depend files.
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This adds an extra column containing this information, looking
like this:
Name Type VFS Label MBR Size Parent
/dev/sda1 filesystem ntfs - - 6.0G -
/dev/sda1 partition - - 07 6.0G /dev/sda
/dev/sda device - - - 6.0G -
In particular you can use this to tell if a partition is an extended
partition, because the field will contain '05' or '0f'.
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This converts a partition device name (eg. /dev/sda1) to a partition
number (eg. 1). This is useful in conjunction with the parted APIs
that mostly take a disk device + partnum.
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Also add this option, if necessary, when testing for virtio-serial
support.
When the workaround is enabled, we specify machine type 'pc'.
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This reverts commit 025dba7f803419f510fd8f085ce693838af82878.
If build and source directories are the same, you get this error:
make[3]: Leaving directory `/home/rjones/d/libguestfs/generator'
make[2]: Circular guestfs_protocol.c <- guestfs_protocol.c dependency dropped.
make[2]: Circular guestfs_protocol.h <- guestfs_protocol.h dependency dropped.
rm -f guestfs_protocol.h
ln guestfs_protocol.h
ln: accessing `guestfs_protocol.h': No such file or directory
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NB: This requires hivex >= 1.3.2 before this syntax becomes true.
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This is just code refactoring.
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