search for: guestfs_add_drive_opt

CentOS 6 has libguestfs-devel 1.20.11, which predates the support in guestfs_add_drive_opts() for requesting an nbd drive instead of a local file. The guestfs plugin can still be built, so no configure changes are needed; but skip the tests that fail to compile so that 'make check' can at least complete. Signed-off-by: Eric Blake <eblake@redhat.com> --- Even with this p...

On 04/06/2018 04:26 AM, Richard W.M. Jones wrote: > On Thu, Apr 05, 2018 at 03:03:41PM -0500, Eric Blake wrote: >> CentOS 6 has libguestfs-devel 1.20.11, which predates the support >> in guestfs_add_drive_opts() for requesting an nbd drive instead >> of a local file. The guestfs plugin can still be built, so no >> configure changes are needed; but skip the tests that fail to >> compile so that 'make check' can at least complete. >> >> Signed-off-by: Eric Blake <...

...cksize> + +This parameter sets the sector size of the disk image. Similar to +I<--format> option it affects all subsequent I<-a> options. Using +I<--blocksize> with no argument switches disk sector size to the +default value which usually 512 bytes. See also +L<guestfs(3)/guestfs_add_drive_opts>. + =item B<-P> nr_threads Since libguestfs 1.22, virt-alignment-scan is multithreaded and diff --git a/cat/cat.c b/cat/cat.c index 4f0d7035e..eb070877a 100644 --- a/cat/cat.c +++ b/cat/cat.c @@ -70,6 +70,8 @@ usage (int status) " -d|--domain guest Add disks fr...

From: Nikolay Ivanets <stenavin@gmail.com> This patch depends on changes in 'common' sub-module posted here: https://www.redhat.com/archives/libguestfs/2020-February/msg00096.html Nikolay Ivanets (1): tools: add '--blocksize' option for C-based tools align/scan.c | 8 ++++++++ align/virt-alignment-scan.pod | 12 ++++++++++++ cat/cat.c

From: Nikolay Ivanets <stenavin@gmail.com> This patch adds 4096 bytes sector size for output disk. Side notes: While working on this patch I reveal long standing issue: virt-make-fs can fail if source directory/archive contains certain amount of really small or empty files or wide tree of directories. That is because of lack of available inodes on a small file system to keep files

From: Nikolay Ivanets <stenavin@gmail.com> This patch adds '--blocksize' command line option for virt-make-fs tool. This option allows specifying disk sector size as described in 'guestfs_add_drive_opts' libguestfs API. --- make-fs/make-fs.c | 28 ++++++++++++++++++++++++++-- make-fs/test-virt-make-fs.sh | 5 ++++- make-fs/virt-make-fs.pod | 10 ++++++++++ 3 files changed, 40 insertions(+), 3 deletions(-) diff --git a/make-fs/make-fs.c b/make-fs/make-fs.c index 5d8c3a385..81...

From: Nikolay Ivanets <stenavin@gmail.com> This patch adds '--blocksize' command line option for virt-make-fs tool. This option allows specifying disk sector size as described in 'guestfs_add_drive_opts' libguestfs API. --- make-fs/make-fs.c | 30 ++++++++++++++++++++++++++++-- make-fs/test-virt-make-fs.sh | 5 ++++- make-fs/virt-make-fs.pod | 10 ++++++++++ 3 files changed, 42 insertions(+), 3 deletions(-) diff --git a/make-fs/make-fs.c b/make-fs/make-fs.c index 5d8c3a385.....

The error message: hivex_close: do_hivex_close: you must call 'hivex-open' first to initialize the hivex handle This is the process flow: g = guestfs_create (); guestfs_add_drive_opts (g, diskFile,GUESTFS_ADD_DRIVE_OPTS_FORMAT, "raw",-1); guestfs_launch (g) char **roots = guestfs_inspect_os (g); guestfs_inspect_os returns NULL, guestfs_last_error(g) returns message above. And guestfs_last_errno(g) returns 0. However this same code works fine with a Server200...

Miscellaneous fixes to: - Handling of Ceph drives now works end-to-end (RHBZ#1026688). - In particular, you can now use rbd:/// URIs in guestfish (and they work). - Parse Ceph & NBD network drives from libvirt XML correctly, so that existing domains with Ceph/NBD drives can be added (eg. using guestfish -d option). - Add more testing of the above.

On Fri, Apr 06, 2018 at 09:02:01AM -0500, Eric Blake wrote: > On 04/06/2018 04:26 AM, Richard W.M. Jones wrote: > > On Thu, Apr 05, 2018 at 03:03:41PM -0500, Eric Blake wrote: > >> CentOS 6 has libguestfs-devel 1.20.11, which predates the support > >> in guestfs_add_drive_opts() for requesting an nbd drive instead > >> of a local file. The guestfs plugin can still be built, so no > >> configure changes are needed; but skip the tests that fail to > >> compile so that 'make check' can at least complete. > >> > >> Signe...

I'm using a Windows raw disk image that is "converted" to the VDI format by custom code that prepends a header to the image. I use 'vdi' for GUESTFS_ADD_DRIVE_OPTS_FORMAT of guestfs_add_drive_opts(). After launching the appliance, the call to guestfs_list_partitions() results in an empty list. Is there a way to add the drive but have an offset into the image file as a "starting point"? So that it could skip the header which apparently is causing th...

...ction has a potential vulnerability, although it will only affect you if you are modifying untrusted raw-format guests. The suggested replacement is 'add_drive_opts' (which also has more features). http://libguestfs.org/guestfs.3.html#guestfs_add_drive http://libguestfs.org/guestfs.3.html#guestfs_add_drive_opts https://bugzilla.redhat.com/642934 (3) Instead of using 'mount', use 'mount_options'. The 'mount' call adds some flags to the mountpoint which are not very useful and also make disk writes very slow. http://libguestfs.org/guestfs.3.html#guestfs_mount http://libguestfs.or...

...https://github.com/libguestfs/libguestfs/blob/master/lib/drives.c#L68 https://github.com/libguestfs/libguestfs/blob/master/lib/launch-direct.c#L78 However you can simply create your own overlay and use that. Run something like: qemu-img create -b orig_disk -f qcow2 my_overlay and change the guestfs_add_drive_opts call to use ?my_overlay? and don't use the readonly flag. > I'm talking about read-only mode so the real disks are not touched. The above won't touch the original disk, as long as you do _not_ run any commands such as ?qemu-img commit?. Rich. -- Richard Jones, Virtualization Gr...

Note this patch requires a non-upstream qemu patch that I've been experimenting with. See qemu-devel list. Rich.

From: Nikolay Ivanets <stenavin@gmail.com> This patch adds '--blocksize' command line option for virt-get-kernel tool. This option allows specifying disk sector size as described in 'guestfs_add_drive_opts' libguestfs API. --- get-kernel/get_kernel.ml | 22 ++++++++++++---------- get-kernel/virt-get-kernel.pod | 8 ++++++++ 2 files changed, 20 insertions(+), 10 deletions(-) diff --git a/get-kernel/get_kernel.ml b/get-kernel/get_kernel.ml index ab6b2d55e..d29d0ef7f 100644 --- a/get-kerne...

...h has shared access > token/secret on the URL. > > The URL likes like this: > 'https://<account>.blob.core.windows.net/<container>/<VMDiskImage>?sv=2017-04-17&sr=b&si=<guid>&sig=<secret>' > I try to use this API: > > int > guestfs_add_drive_opts (guestfs_h *g, > const char *filename, > ...); > > > My code looks like this: > char const *servers[] = { (char const *)"<account>.blob.core.windows.net", NULL }; > int addDriveRet = guestfs_add_drive_opts (g...

Hi, I could not find any option to set iSCSI initiator iqn while using guestfish, although the underlying qemu command has this option. It appears that each time guestfish tries to connect to iSCSI LUN, a randomly generated initiator iqn is being used. This is preventing guestfish to connect to the iSCSI target in our environment as the target allows incoming connection based on the preconfigured

I'm using qemu-nbd to setup the device with an offset into the image. Using libguestfs version 1.21.22 Code for adding the drive: char *server[] = { "localhost:3000", NULL }; if (guestfs_add_drive_opts (g, "" /* export name - see below */, GUESTFS_ADD_DRIVE_OPTS_FORMAT, "raw", GUESTFS_ADD_DRIVE_OPTS_PROTOCOL, "nbd", GUESTFS_ADD_DRIVE_OPTS_SERVER, server, -1) Here is some of the stdout. A mix of libguestfs and qemu-nbd messages. qemu-nbd -v -n...

...uot; }; { defaults with @@ -558,6 +568,10 @@ Disks with the E<lt>readonly/E<gt> flag are skipped. =back +If present, the value of C<logical_block_size> attribute of E<lt>blockio/E<gt> +tag in libvirt XML will be passed as C<blocksize> parameter to +C<guestfs_add_drive_opts>. + The other optional parameters are passed directly through to C<guestfs_add_drive_opts>." }; @@ -597,6 +611,10 @@ The optional C<readonlydisk> parameter controls what we do for disks which are marked E<lt>readonly/E<gt> in the libvirt XML. See C<guestfs_...

...tfs_set_trace (g, 1); + /* Create a raw-format sparse disk image, 512 MB in size. */ + if (guestfs_disk_create (g, "disk.img", "raw", UINT64_C(512)*1024*1024, + -1) == -1) + exit (EXIT_FAILURE); + /* Add the disk image to libguestfs. */ if (guestfs_add_drive_opts (g, "disk.img", GUESTFS_ADD_DRIVE_OPTS_FORMAT, "raw", /* raw format */ diff --git a/examples/mount-local.c b/examples/mount-local.c index 18970d0..291cb26 100644 --- a/examples/mount-local.c +++ b/examples/mount-local.c @@ -43,7 +43,7 @@ int main (int argc, char *argv...