[Devel] [PATCH VZ9 v3 1/5] block/blk-cbt: rework uuid field

Using uuid as a bitmap name is too restrictive. We are going to expose bitmap names to libvirt where we cannot expect users to follow such constraint. QEMU allows bitmap names up to 1024 symbols, but this seems too big for the structure. We do not want to mess with dynamic length, so set the max le

[Devel] [PATCH VZ9 v3 0/5] blk-cbt improvements

Currently blk-cbt use UUID as a name. This is a big limitation. We are going to expose bitmap names to libvirt, so we should not expect users to follow this. Moreover, even VHI backup utilities use non-UUID names sometimes. Technically QEMU allows us bitmap names up to 1024 bytes, but 128 should be

[Devel] [PATCH VZ9 v3 2/5] block/blk-cbt: allow multiple cbts in a single queue

Store cbts in a list instead of a single pointer. Allow up to 16 entries. Update all APIs to work with user-specified bitmap. We need to exercise extra care when accessing queue->cbt_list to be sure that accessed element still exists. Majority of accesses, which are mostly user-space ioctls, are p

[Devel] [PATCH VZ9 v3 4/5] block/blk-cbt: add BLKCBTLIST ioctl

so user can query the list of active bitmaps. https://virtuozzo.atlassian.net/browse/VSTOR-96269 Signed-off-by: Andrey Zhadchenko --- v2: - add abi version - remove total_count from struct blk_user_cbt_list block/blk-cbt.c | 36 block/ioctl.c

[Devel] [PATCH VZ9 v3 5/5] block/blk-cbt: add BLKCBTRENAME instead of BLKCBTSET flag

Users could rename cbts with CI_FLAG_NEW_NAME flag during BLKCBTSET ioctl. Set command now uses ci_name to identify target, so we need a new field to present updated name. Add new BLKCBTRENAME ioctl instead of adding new fields to blk_user_cbt_info. Note that we do not need to extra protect cbt->n

[Devel] [PATCH VZ9 v3 3/5] block/blk-cbt: introduce ABI versioning

so it will be easier to change anything in the future https://virtuozzo.atlassian.net/browse/VSTOR-96269 Signed-off-by: Andrey Zhadchenko --- block/blk-cbt.c | 10 ++ include/uapi/linux/fs.h | 4 2 files changed, 14 insertions(+) diff --git a/block/blk-cbt.c b/block/blk-cb

[Devel] [PATCH VZ9 0/2] vhost/vsock: allow reset for qemu live-update

https://virtuozzo.atlassian.net/browse/VSTOR-98105 Signed-off-by: Pavel Tikhomirov Pavel Tikhomirov (2): vhost/vsock: split out vhost_vsock_drop_backends helper vhost/vsock: add VHOST_RESET_OWNER ioctl drivers/vhost/vsock.c | 56 --- 1 file changed, 4

[Devel] [PATCH VZ9 2/2] vhost/vsock: add VHOST_RESET_OWNER ioctl

We plan to use it to be able to execute new qemu version and take over the contol over /dev/vhost-vsock file by reseting the owner and setting a new one. We expect not to lose any AF_VSOCK connection while this happens. https://virtuozzo.atlassian.net/browse/VSTOR-98105 Signed-off-by: Pavel Tikhom

Re: [Devel] [PATCH VZ9 v3 0/5] blk-cbt improvements

Reviewed-by: Pavel Tikhomirov On 1/28/25 16:15, Andrey Zhadchenko wrote: Currently blk-cbt use UUID as a name. This is a big limitation. We are going to expose bitmap names to libvirt, so we should not expect users to follow this. Moreover, even VHI backup utilities use non-UUID names sometimes

[Devel] [PATCH VZ9 1/2] vhost/vsock: split out vhost_vsock_drop_backends helper

Split the actual backend dropping part from vhost_vsock_stop, we will need to use it where vsock->dev.mutex is already taken and owner is checked. https://virtuozzo.atlassian.net/browse/VSTOR-98105 Signed-off-by: Pavel Tikhomirov --- drivers/vhost/vsock.c | 26 +- 1 file

[Devel] [PATCH RHEL9 COMMIT] block/blk-cbt: rework uuid field

The commit is pushed to "branch-rh9-5.14.0-427.44.1.vz9.80.x-ovz" and will appear at g...@bitbucket.org:openvz/vzkernel.git after rh9-5.14.0-427.44.1.vz9.80.7 --> commit 5eb9590b303d5f92a72ecb39d7cc3c0ed1b27b01 Author: Andrey Zhadchenko Date: Tue Jan 28 11:15:05 2025 +0300 block/blk-cb

[Devel] [PATCH RHEL9 COMMIT] block/blk-cbt: allow multiple cbts in a single queue

The commit is pushed to "branch-rh9-5.14.0-427.44.1.vz9.80.x-ovz" and will appear at g...@bitbucket.org:openvz/vzkernel.git after rh9-5.14.0-427.44.1.vz9.80.7 --> commit 0d3dc1c86af908554c169a1b03b1a585279a48f0 Author: Andrey Zhadchenko Date: Tue Jan 28 11:15:06 2025 +0300 block/blk-cb

[Devel] [PATCH RHEL9 COMMIT] block/blk-cbt: add BLKCBTLIST ioctl

The commit is pushed to "branch-rh9-5.14.0-427.44.1.vz9.80.x-ovz" and will appear at g...@bitbucket.org:openvz/vzkernel.git after rh9-5.14.0-427.44.1.vz9.80.7 --> commit 3684562b9ec0e5fe8d9362ff0d006da3a86aecf0 Author: Andrey Zhadchenko Date: Tue Jan 28 11:15:08 2025 +0300 block/blk-cb

[Devel] [PATCH RHEL9 COMMIT] block/blk-cbt: add BLKCBTRENAME instead of BLKCBTSET flag

The commit is pushed to "branch-rh9-5.14.0-427.44.1.vz9.80.x-ovz" and will appear at g...@bitbucket.org:openvz/vzkernel.git after rh9-5.14.0-427.44.1.vz9.80.7 --> commit a9f7d2a1874eca7f2a4f1f3ade3ee8a23e750c0e Author: Andrey Zhadchenko Date: Tue Jan 28 11:15:09 2025 +0300 block/blk-cb

[Devel] [PATCH RHEL9 COMMIT] block/blk-cbt: introduce ABI versioning

The commit is pushed to "branch-rh9-5.14.0-427.44.1.vz9.80.x-ovz" and will appear at g...@bitbucket.org:openvz/vzkernel.git after rh9-5.14.0-427.44.1.vz9.80.7 --> commit c692713fc23739893b1bfa0fc6a7da514fd7b3a5 Author: Andrey Zhadchenko Date: Tue Jan 28 11:15:07 2025 +0300 block/blk-cb

[Devel] [PATCH RHEL7 COMMIT] ve: rework task_ve pointer reset for zombies

The commit is pushed to "branch-rh7-3.10.0-1160.119.1.vz7.224.x-ovz" and will appear at g...@bitbucket.org:openvz/vzkernel.git after rh7-3.10.0-1160.119.1.vz7.224.5 --> commit 2ebd55d0b735906ca6088e5c0ebbdbd3a68da2d7 Author: Pavel Tikhomirov Date: Mon Jan 27 15:15:00 2025 +0800 ve: rew

[Devel] [PATCH RHEL9 COMMIT] vhost/vsock: split out vhost_vsock_drop_backends helper

The commit is pushed to "branch-rh9-5.14.0-427.44.1.vz9.80.x-ovz" and will appear at g...@bitbucket.org:openvz/vzkernel.git after rh9-5.14.0-427.44.1.vz9.80.8 --> commit 31d603dfc116ddaadf4167eb823a333ba805163f Author: Pavel Tikhomirov Date: Tue Jan 28 18:48:00 2025 +0800 vhost/vsock:

[Devel] [PATCH RHEL9 COMMIT] vhost/vsock: add VHOST_RESET_OWNER ioctl

The commit is pushed to "branch-rh9-5.14.0-427.44.1.vz9.80.x-ovz" and will appear at g...@bitbucket.org:openvz/vzkernel.git after rh9-5.14.0-427.44.1.vz9.80.8 --> commit ad35221ad13416f3eb981d5f2c33312dd88fa692 Author: Pavel Tikhomirov Date: Tue Jan 28 18:48:01 2025 +0800 vhost/vsock:

[Devel] [PATCH RHEL9 COMMIT] fs/fuse kio: get the correct rpc pointer in pcs_rpc_sent_cb()

The commit is pushed to "branch-rh9-5.14.0-427.44.1.vz9.80.x-ovz" and will appear at g...@bitbucket.org:openvz/vzkernel.git after rh9-5.14.0-427.44.1.vz9.80.8 --> commit 78870d51913bd072aa62f0b5a0b0b9d92655f3c2 Author: Liu Kui Date: Tue Jan 28 13:43:52 2025 +0800 fs/fuse kio: get the c