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 8D2FF7374C; Thu, 15 Apr 2021 20:36:18 +0200 (CEST) Received: from firstgate.proxmox.com (localhost [127.0.0.1]) by firstgate.proxmox.com (Proxmox) with ESMTP id 776891D7C1; Thu, 15 Apr 2021 20:35:48 +0200 (CEST) Received: from proxmox-new.maurer-it.com (proxmox-new.maurer-it.com [212.186.127.180]) (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 5FEEB1D7B2; Thu, 15 Apr 2021 20:35:47 +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 2CBF645B0C; Thu, 15 Apr 2021 20:35:47 +0200 (CEST) Message-ID: <542b7a50-7a1b-88e3-2fa3-5fc7498f2d4b@proxmox.com> Date: Thu, 15 Apr 2021 20:35:46 +0200 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:88.0) Gecko/20100101 Thunderbird/88.0 Content-Language: en-US To: Proxmox VE development discussion , Stefan Reiter , pbs-devel@lists.proxmox.com References: <20210303095612.7475-1-s.reiter@proxmox.com> From: Thomas Lamprecht In-Reply-To: <20210303095612.7475-1-s.reiter@proxmox.com> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit X-SPAM-LEVEL: Spam detection results: 0 AWL -0.040 Adjusted score from AWL reputation of From: address KAM_DMARC_STATUS 0.01 Test Rule for DKIM or SPF Failure with Strict Alignment NICE_REPLY_A -0.001 Looks like a legit reply (A) RCVD_IN_DNSWL_MED -2.3 Sender listed at https://www.dnswl.org/, medium trust SPF_HELO_NONE 0.001 SPF: HELO does not publish an SPF Record SPF_PASS -0.001 SPF: sender matches SPF record Subject: Re: [pbs-devel] [pve-devel] [PATCH v2 00/11] live-restore for PBS snapshots X-BeenThere: pbs-devel@lists.proxmox.com X-Mailman-Version: 2.1.29 Precedence: list List-Id: Proxmox Backup Server development discussion List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 15 Apr 2021 18:36:18 -0000 On 03.03.21 10:56, Stefan Reiter wrote: > "live-restore" allows starting a VM immediately from a backup snapshot, no > waiting for a long restore process. This is made possible with QEMU backing > images, i.e. data is read from the backup which is attached to the VM as a > drive, but new data is written to the destination, while a background process > ('block-stream') copies over data in a linear fashion as well. as mentioned off-list, it works good in general, but live-migration afterwards seem to be broken, as resume on target fails: kvm: ../target/i386/kvm.c:2538: kvm_put_msr_feature_control: Assertion `ret == 1' failed. Stack trace of thread 1240139: #0 0x00007f96834617bb __GI_raise (libc.so.6) #1 0x00007f968344c535 __GI_abort (libc.so.6) #2 0x00007f968344c40f __assert_fail_base (libc.so.6) #3 0x00007f968345a102 __GI___assert_fail (libc.so.6) #4 0x000055e795c18b82 kvm_put_msr_feature_control (qemu-system-x86_64) #5 0x000055e795c9be7e do_kvm_cpu_synchronize_post_init (qemu-system-x86_64) #6 0x000055e795acc5a6 process_queued_cpu_work (qemu-system-x86_64) #7 0x000055e795d355b8 kvm_vcpu_thread_fn (qemu-system-x86_64) #8 0x000055e795ece91a qemu_thread_start (qemu-system-x86_64) #9 0x00007f96835f4fa3 start_thread (libpthread.so.0) #10 0x00007f96835234cf __clone (libc.so.6)