search for: blockdev

On 04/22/16 08:19, Leon Fauster wrote: <<>> > check it with: > > blockdev --getalignoff /dev/sd > > (if a '0' is returned, the partition is aligned) > ===> Leon, thank you for reply. ]$ sudo blockdev --getalignoff /dev/sdc1 0 ]$ sudo blockdev --getalignoff /dev/sdc2 0 ]$ sudo blockdev --getalignoff /dev/sdc5 2560 ]$ sudo blockdev --report /dev/sdc...

...ile::Spec; use File::stat; @@ -79,7 +80,36 @@ sub transfer path => $path, error => $!))); - my $vol = $target->create_volume($name, $st->size); + my $size; + + # If it's a block device, use the output of blockdev command + if (S_ISBLK($st->mode)) { + my $blockdev; + open($blockdev, '-|', 'blockdev', '--getsize64', $path) + or die("Unable to execute blockdev: $!"); + + while (<$blockdev>) { + if (defined($size)) { +...

...Oliver Dzombic wrote: > Hi, > > i try to test live-migration using this command: > > #virsh migrate --copy-storage-all --verbose --live kvm1776 > qemu+ssh://nodeb/system > > > Instant error message: > > error: internal error: unable to execute QEMU command 'blockdev-mirror': > Cannot find device=drive-sata0-0-0 nor node_name=drive-sata0-0-0 Hi, for completness I'm re-posting the reply I gave in the bug you filed at https://bugzilla.redhat.com/show_bug.cgi?id=1792088. The bug was caused by the switch to use blockdev. It was fixed in libvirt-6.0 wh...

...change, no functional change. --- dib/dib.ml | 5 ++--- 1 file changed, 2 insertions(+), 3 deletions(-) diff --git a/dib/dib.ml b/dib/dib.ml index 06a1f67..35ae6b7 100644 --- a/dib/dib.ml +++ b/dib/dib.ml @@ -781,9 +781,8 @@ let main () = ) @ mkfs_options @ [ "-t"; cmdline.fs_type; blockdev ] in ignore (g#debug "sh" (Array.of_list ([ "mkfs" ] @ mkfs_options))); g#set_label blockdev root_label; - (match cmdline.fs_type with - | x when String.is_prefix x "ext" -> g#set_uuid blockdev rootfs_uuid - | _ -> ()); + if String.is_prefix cmdline.fs_...

...;s locking is good enough to rely on for file based >> images. Hi Daniel, thank you for the direct confirmation. >> The flaws I mention with libvirt might actually finally be something >> we >> have fixed in 5.10.0 with QEMU 4.2.0, since we can finally use >> "blockdev" >> syntax for configuring disks. Copying Peter to confirm/deny this... > > The main issue was that we were leaking locks on the backing chain. > This > should be now fixed with -blockdev as we call the appropriate apis to > lock/unlock the images but I didn't try i...

...member of virStorageSource. > code path and while looking I didn't find a mechanism that would allow > an "empty" or "tray='open'" to actually create a dummy entry. > > I believe there needs to be a way via the (newer, but not supported in > libvirt) blockdev-change-medium qmp command to tell it what the secret > object id is. The object id of the secret is added via blockdev-add. Blockdev-change-medium then uses that node as a media for the drive. > > > There should be a upstream bugzilla tracking this and I'm planing to fix > &gt...

...oks +export TMP_HOOKS_PATH=$mysysroot/tmp/in_target.aux/hooks export DIB_ARGS=\"%s\" -export DIB_MANIFEST_SAVE_DIR=\"$mysysroot/tmp/aux/out/${IMAGE_NAME}.d\" +export DIB_MANIFEST_SAVE_DIR=\"$mysysroot/tmp/in_target.aux/out/${IMAGE_NAME}.d\" export IMAGE_BLOCK_DEVICE=$blockdev export IMAGE_ELEMENT=\"%s\" export DIB_ENV=%s @@ -204,11 +204,11 @@ export DIB_NO_TMPFS=1 export FS_TYPE=%s export DIB_CHECKSUM=%s -export TMP_BUILD_DIR=$mysysroot/tmp/aux -export TMP_IMAGE_DIR=$mysysroot/tmp/aux +export TMP_BUILD_DIR=$mysysroot/tmp/in_target.aux +export TMP_IMAGE_D...

[Following up on this thread: http://thread.gmane.org/gmane.linux.kernel.device-mapper.devel/14999] Alasdair G Kergon wrote: > Try > blkdev --flushbufs > after any cmd that writes to a dev to see if that makes any difference. Thanks for the work-around. Using "blockdev --flushbufs $dev" does indeed make parted behave the same with dm-backed storage as with other devices. Adjusting my small example, cd /tmp; truncate -s 10m g && loop=$(losetup --show -f g) echo 0 100 linear $loop 0 | dmsetup create zub dev=/dev/mapper/zub parted -s $dev \...

...p showing > whether anything changed between the two or there is a different > problem. > here is the good cmd: /usr/bin/qemu-system-x86_64 \ -name guest=debian10,debug-threads=on \ -S \ -object secret,id=masterKey0,format=raw,file=/var/lib/libvirt/qemu/domain-1-debian10/master-key.aes \ -blockdev '{"driver":"file","filename":"/usr/share/edk2-ovmf/OVMF_CODE.fd","node-name":"libvirt-pflash0-storage","auto-read-only":true,"discard":"unmap"}' \ -blockdev '{"node-name":"libvirt-pf...

...9;0x07' function='0x0'/> </disk> libvirt 5.9.0 is calling qemu 4.2.0 like [2], and libvirt 5.10.0 like [3], the differences being (5.9.0 1st, 5.10.0 2nd lines) [--drive file=/home/joj/lib/vm/windows/windows7-Office2013.qcow2,format=qcow2,if=none,id=drive-virtio-disk0-] {+-blockdev {"driver":"file","filename":"/home/joj/lib/vm/windows/windows7-taintable.qcow2","node-name":"libvirt-2-storage","auto-read-only":true,"discard":"unmap"} -blockdev {"node-name":"libvirt-2-format&...

On 04/22/2016 09:43 AM, g wrote: > ]$ sudo blockdev --getalignoff /dev/sdc1 > 0 > ]$ sudo blockdev --getalignoff /dev/sdc2 > 0 > ]$ sudo blockdev --getalignoff /dev/sdc5 > 2560 > ]$ sudo blockdev --report /dev/sdc1 > RO RA SSZ BSZ StartSec Size Device > rw 256 512 4096 2048 838860800 /...

The real sudo does it as well, and leaving them when preserving the environment (-E) maybe breaks the applications, as e.g. chroot will have a TMPDIR path pointing outside of it. --- dib/dib.ml | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/dib/dib.ml b/dib/dib.ml index df83ba1..d15cd19 100644 --- a/dib/dib.ml +++ b/dib/dib.ml @@ -301,6 +301,11 @@ if [ -z \"$preserve_env\" ];

This adds a binding for 'blockdev --setra', allowing you to adjust the readahead parameter for filesystems and devices. --- daemon/blockdev.c | 30 ++++++++++++++++++++---------- generator/actions.ml | 14 ++++++++++++++ 2 files changed, 34 insertions(+), 10 deletions(-) diff --git a/daemon/blockdev.c b/daemon/blockdev.c i...

...rce> <target dev="vdb" bus="virtio"/> <alias name="virtio-disk1"/> <address type="pci" domain="0x0000" bus="0x02" slot="0x00" function="0x0"/> </disk> QEMU cmdline: ... -blockdev {"driver":"file","filename":"/var/lib/libvirt/images/new.qcow2","node-name":"libvirt-2-storage","auto-read-only":true, *"discard":"unmap"*} -blockdev {"node-name":"libvirt-2-format","r...

...> > </disk> > > libvirt 5.9.0 is calling qemu 4.2.0 like [2], and libvirt 5.10.0 like [3], the > differences being (5.9.0 1st, 5.10.0 2nd lines) > > [--drive file=/home/joj/lib/vm/windows/windows7-Office2013.qcow2,format=qcow2,if=none,id=drive-virtio-disk0-] > {+-blockdev {"driver":"file","filename":"/home/joj/lib/vm/windows/windows7-taintable.qcow2","node-name":"libvirt-2-storage","auto-read-only":true,"discard":"unmap"} -blockdev {"node-name":"libvirt-2-format&...

See http://rwmj.wordpress.com/2014/11/23/mapping-files-to-disk/

Greetings, I have two machines running the same distro, both running qemu 5.1.0, one runs libvirt 6.7.0, the other 6.8.0. I've decided to test the viability of passing through my sata cdrom into a vm, so I went to the libvirt docs, read a bit and added the following to a debian10 uefi vm running on libvirt 6.8.0: <controller type='scsi' index='0'

...ueue limit parameters into block drive. And inits them for sg block drive. Some interfaces are also added for accessing them. Signed-off-by: Cong Meng <mc at linux.vnet.ibm.com> --- block/raw-posix.c | 58 +++++++++++++++++++++++++++++++++++++++++++++++++++++ block_int.h | 4 +++ blockdev.c | 15 +++++++++++++ hw/block-common.h | 3 ++ 4 files changed, 80 insertions(+), 0 deletions(-) diff --git a/block/raw-posix.c b/block/raw-posix.c index 0dce089..a086f89 100644 --- a/block/raw-posix.c +++ b/block/raw-posix.c @@ -53,6 +53,7 @@ #include <linux/cdrom.h> #include...

...ueue limit parameters into block drive. And inits them for sg block drive. Some interfaces are also added for accessing them. Signed-off-by: Cong Meng <mc at linux.vnet.ibm.com> --- block/raw-posix.c | 58 +++++++++++++++++++++++++++++++++++++++++++++++++++++ block_int.h | 4 +++ blockdev.c | 15 +++++++++++++ hw/block-common.h | 3 ++ 4 files changed, 80 insertions(+), 0 deletions(-) diff --git a/block/raw-posix.c b/block/raw-posix.c index 0dce089..a086f89 100644 --- a/block/raw-posix.c +++ b/block/raw-posix.c @@ -53,6 +53,7 @@ #include <linux/cdrom.h> #include...

Does *not* incorporate changes suggested by Pino yet. Rich.