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 2D60FA94F for ; Tue, 5 Apr 2022 09:32:07 +0200 (CEST) Received: from firstgate.proxmox.com (localhost [127.0.0.1]) by firstgate.proxmox.com (Proxmox) with ESMTP id 20E331DCC8 for ; Tue, 5 Apr 2022 09:32:07 +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 61A671DCBF for ; Tue, 5 Apr 2022 09:32:06 +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 5557041FAC; Tue, 5 Apr 2022 09:26:52 +0200 (CEST) Message-ID: <3c6d1ee7-991c-50af-7427-f152ccdbe869@proxmox.com> Date: Tue, 5 Apr 2022 09:26:33 +0200 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:91.0) Gecko/20100101 Thunderbird/91.7.0 Content-Language: en-US To: Proxmox VE user list , Marco Gaiarin References: <461hhi-f5n2.ln1@hermione.lilliput.linux.it> From: Aaron Lauterer In-Reply-To: Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit X-SPAM-LEVEL: Spam detection results: 0 AWL 0.343 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 -0.631 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 T_SCC_BODY_TEXT_LINE -0.01 - URIBL_BLOCKED 0.001 ADMINISTRATOR NOTICE: The query to URIBL was blocked. See http://wiki.apache.org/spamassassin/DnsBlocklists#dnsbl-block for more information. [proxmox.com] Subject: Re: [PVE-User] Replication failed, got tiemout? X-BeenThere: pve-user@lists.proxmox.com X-Mailman-Version: 2.1.29 Precedence: list List-Id: Proxmox VE user list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 05 Apr 2022 07:32:07 -0000 Is the pool using HDDs? Could be that other things are happening at that moment and HDDs are really not great for random IO. I had that as well sometimes. Went away when I changed to SSDs. A dedicated special device vdev on (mirrored) SSDs should also improve the situation while not needing as many SSDs. Snapshots are a metadata operation. See [0] or `man zpoolconcepts` and look for "special device" Cheers Aaron [0] https://pve.proxmox.com/pve-docs/pve-admin-guide.html#sysadmin_zfs_special_device On 4/4/22 10:17, Marco Gaiarin wrote: >> New installed PVE6 2-node cluster, totally unloaded; only some test VMs that >> are replicated between the two nodes, conected via a 10G direct cable. >> Sometimes we get: >>   command 'zfs snapshot rpool/data/vm-103-disk-0@__replicate_103-0_1648656014__' failed: got timeout >> What can be?! Thanks. > > We catch a log on /var/log/pve/replicate/, but seems, at least to me, not > providing some more clue: > > 2022-04-02 14:00:14 103-0: start replication job > 2022-04-02 14:00:14 103-0: guest => VM 103, running => 5167 > 2022-04-02 14:00:14 103-0: volumes => local-zfs:vm-103-disk-0 > 2022-04-02 14:00:16 103-0: create snapshot '__replicate_103-0_1648900814__' on local-zfs:vm-103-disk-0 > 2022-04-02 14:00:21 103-0: end replication job with error: command 'zfs snapshot rpool/data/vm-103-disk-0@__replicate_103-0_1648900814__' failed: got timeout > > I'm seeking info. Thanks. >