From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from firstgate.proxmox.com (firstgate.proxmox.com [212.224.123.68]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits)) (No client certificate requested) by lists.proxmox.com (Postfix) with ESMTPS id 45F67799E3 for ; Wed, 27 Oct 2021 13:56:07 +0200 (CEST) Received: from firstgate.proxmox.com (localhost [127.0.0.1]) by firstgate.proxmox.com (Proxmox) with ESMTP id 3B13012B5C for ; Wed, 27 Oct 2021 13:55:37 +0200 (CEST) Received: from proxmox-new.maurer-it.com (proxmox-new.maurer-it.com [94.136.29.106]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits)) (No client certificate requested) by firstgate.proxmox.com (Proxmox) with ESMTPS id 2CF6412B4E for ; Wed, 27 Oct 2021 13:55:36 +0200 (CEST) Received: from proxmox-new.maurer-it.com (localhost.localdomain [127.0.0.1]) by proxmox-new.maurer-it.com (Proxmox) with ESMTP id 0153B45FDB for ; Wed, 27 Oct 2021 13:55:36 +0200 (CEST) To: pve-devel@lists.proxmox.com, Aaron Lauterer References: <20211021113030.2649985-1-a.lauterer@proxmox.com> From: Fabian Ebner Message-ID: Date: Wed, 27 Oct 2021 13:55:34 +0200 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:78.0) Gecko/20100101 Thunderbird/78.14.0 MIME-Version: 1.0 In-Reply-To: <20211021113030.2649985-1-a.lauterer@proxmox.com> Content-Type: text/plain; charset=utf-8; format=flowed Content-Language: en-US Content-Transfer-Encoding: 7bit X-SPAM-LEVEL: Spam detection results: 0 AWL 0.362 Adjusted score from AWL reputation of From: address BAYES_00 -1.9 Bayes spam probability is 0 to 1% KAM_DMARC_STATUS 0.01 Test Rule for DKIM or SPF Failure with Strict Alignment NICE_REPLY_A -0.215 Looks like a legit reply (A) SPF_HELO_NONE 0.001 SPF: HELO does not publish an SPF Record SPF_PASS -0.001 SPF: sender matches SPF record URIBL_BLOCKED 0.001 ADMINISTRATOR NOTICE: The query to URIBL was blocked. See http://wiki.apache.org/spamassassin/DnsBlocklists#dnsbl-block for more information. [zfspoolplugin.pm, lvmplugin.pm, pct.pm, lvmthinplugin.pm, proxmox.com, drive.pm, plugin.pm, qemu.pm, qm.pm, lxc.pm, storage.pm, rbdplugin.pm] Subject: Re: [pve-devel] [PATCH v3 storage qemu-server container 0/9] move disk or volume to other guests X-BeenThere: pve-devel@lists.proxmox.com X-Mailman-Version: 2.1.29 Precedence: list List-Id: Proxmox VE development discussion List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 27 Oct 2021 11:56:07 -0000 Nice work! For all patches except #8 it's only nits from my side, so those are: Reviewed-by: Fabian Ebner Tested-by: Fabian Ebner I did run into one strange issue with RBD upon destroying a VM, but it didn't pop up consistently and maybe it's just my cluster (all VMs were powered off): root@pve701 ~ # qm clone 12345 142 /dev/rbd0 create linked clone of drive scsi0 (rbdkvm:base-12345-disk-0) clone base-12345-disk-0: base-12345-disk-0 snapname __base__ to vm-142-disk-0 root@pve701 ~ # qm move_disk 142 scsi0 --target-vmid 111 --target-disk scsi3 moving disk 'scsi0' from VM '142' to '111' removing disk 'scsi0' from VM '142' config update VM 111: -scsi3 rbdkvm:base-12345-disk-0/vm-111-disk-0,size=4G /dev/rbd1 root@pve701 ~ # qm move_disk 111 scsi3 --target-vmid 142 --target-disk scsi3 moving disk 'scsi3' from VM '111' to '142' removing disk 'scsi3' from VM '111' config update VM 142: -scsi3 rbdkvm:base-12345-disk-0/vm-142-disk-0,size=4G /dev/rbd2 root@pve701 ~ # qm destroy 142 2021-10-27T12:17:13.202+0200 7f8b00d0e700 -1 librbd::image::PreRemoveRequest: 0x55e08f1cac30 check_image_watchers: image has watchers - not removing Removing image: 0% complete...failed. rbd: error: image still has watchers Could not remove disk 'rbdkvm:base-12345-disk-0/vm-142-disk-0', check manually: rbd rm 'base-12345-disk-0/vm-142-disk-0' error: rbd: error: image still has watchers Am 21.10.21 um 13:30 schrieb Aaron Lauterer: > This is the continuation of 'disk-reassign' but instead of a separate > API endpoint we now follow the approach to make it part of the > 'move-disk' and 'move-volume' endpoints for VMs and containers. > > The main idea is to make it easy to move a disk/volume to another guest. > Currently this is a manual and error prone process that requires > knowledge of how PVE handles disks/volumes and the mapping which guest > they belong to. > > With this, the 'qm move-disk' and 'pct move-volume' are changed in the > way that the storage parameter is optional as well as the new > target-vmid and target-{disk,volume}. This will keep old calls to move the > disk/volume to another storage working. To move to another guest, the > storage needs to be omitted. > > Major changes since the last iteration as dedicated API endpoint [0] are > that the storage layer only implements the renaming itself. The layer > above (qemu-server and pve-container) define the name of the new > volume/disk. Therefore it was necessary to expose the new > 'find_free_volname' function. The rename function on the storage layer > handles possible template references and the creation of the new volid > as that is highly dependent on the actual storage. > > The following storage types are implemented at the moment: > * dir based ones > * ZFS > * (thin) LVM > * Ceph RBD > > > Most parts of the disk-reassign code has been taken and moved into the > 'move_disk' and 'move_volume' endpoints with conditional checking if the > reassign code or the move to other storage code is meant to run > depending on the given parameters. > > Changes since v2: > * fixed base image handling > * fixed code style issues > > Changes since v1 [2] (thx @ Fabian_E for the reviews!): > * drop exposed 'find_free_diskname' method > * drop 'wants_fmt_suffix' method (not needed anymore) > * introduce 'find_free_volname' which decides if only the diskname is > needed or the longer path for directory based storages > * use $source_volname instead of $source_volid -> avoids some extra > calls to get to $source_volname again > * make --target-{disk,volume} optional and fall back to source key > * smaller fixes in code quality and using existing functions like > 'parse_volname' instead of a custom regex (possible with the new > changes) > > > Changes since the RFC [1]: > * added check if target guest is replicated and fail if storage does not > support replication > * only pass minimum of needed parameters to the storage layer and infer > other needed information from that > * lock storage and check if the volume aready exists (handling a > possible race condition between calling find_free_disk and the actual > renaming) > * use a helper method to determine if the plugin needs the fmt suffix > in the volume name > * getting format of the source and pass it to find_free_disk > * style fixes (long lines, multiline post-if, ...) > > [0] https://lists.proxmox.com/pipermail/pve-devel/2021-April/047481.html > [1] https://lists.proxmox.com/pipermail/pve-devel/2021-June/048400.html > [2] https://lists.proxmox.com/pipermail/pve-devel/2021-July/049445.html > > storage: Aaron Lauterer (2): > storage: add new find_free_volname > add disk rename feature > > PVE/Storage.pm | 29 +++++++++++++++++-- > PVE/Storage/LVMPlugin.pm | 24 ++++++++++++++++ > PVE/Storage/LvmThinPlugin.pm | 1 + > PVE/Storage/Plugin.pm | 54 ++++++++++++++++++++++++++++++++++++ > PVE/Storage/RBDPlugin.pm | 28 +++++++++++++++++++ > PVE/Storage/ZFSPoolPlugin.pm | 23 +++++++++++++++ > 6 files changed, 157 insertions(+), 2 deletions(-) > > > qemu-server: Aaron Lauterer (4): > cli: qm: change move_disk to move-disk > Drive: add valid_drive_names_with_unused > api: move-disk: add move to other VM > api: move-disk: cleanup very long lines > > PVE/API2/Qemu.pm | 242 ++++++++++++++++++++++++++++++++++++++-- > PVE/CLI/qm.pm | 3 +- > PVE/QemuServer/Drive.pm | 4 + > 3 files changed, 238 insertions(+), 11 deletions(-) > > > container: Aaron Lauterer (3): > cli: pct: change move_volume to move-volume > api: move-volume: add move to another container > api: move-volume: cleanup very long lines > > src/PVE/API2/LXC.pm | 286 +++++++++++++++++++++++++++++++++++++++----- > src/PVE/CLI/pct.pm | 3 +- > 2 files changed, 261 insertions(+), 28 deletions(-) > >