From owner-freebsd-questions@freebsd.org Wed Jan 2 14:03:04 2019 Return-Path: Delivered-To: freebsd-questions@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id 238D414211AE for ; Wed, 2 Jan 2019 14:03:04 +0000 (UTC) (envelope-from paul@ifdnrg.com) Received: from outbound.ifdnrg.com (outbound2.ifdnrg.com [193.200.98.38]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client CN "outbound.ifdnrg.com", Issuer "COMODO RSA Domain Validation Secure Server CA" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id C2F318D754 for ; Wed, 2 Jan 2019 14:03:00 +0000 (UTC) (envelope-from paul@ifdnrg.com) Received: from [192.168.0.10] (38.156-30-62.static.virginmediabusiness.co.uk [62.30.156.38]) (authenticated bits=0) by outbound.ifdnrg.com (8.15.2/8.15.2) with ESMTPSA id x02DhD1r029698 (version=TLSv1.2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128 verify=NO) for ; Wed, 2 Jan 2019 13:43:14 GMT (envelope-from paul@ifdnrg.com) X-Authentication-Warning: outbound.ifdnrg.com: Host 38.156-30-62.static.virginmediabusiness.co.uk [62.30.156.38] claimed to be [192.168.0.10] To: freebsd-questions@freebsd.org From: Paul Macdonald Subject: parallel zfs sends Message-ID: <6924d723-773b-ecf7-e392-8a2126937a69@ifdnrg.com> Date: Wed, 2 Jan 2019 13:47:37 +0000 User-Agent: Mozilla/5.0 (Windows NT 10.0; WOW64; rv:60.0) Gecko/20100101 Thunderbird/60.3.3 MIME-Version: 1.0 Content-Language: en-GB X-Rspamd-Queue-Id: C2F318D754 X-Spamd-Bar: ---- X-Spamd-Result: default: False [-4.70 / 15.00]; RCVD_VIA_SMTP_AUTH(0.00)[]; R_SPF_ALLOW(-0.20)[+ip4:193.200.98.0/23]; HAS_XAW(0.00)[]; TO_DN_NONE(0.00)[]; DKIM_TRACE(0.00)[ifdnrg.com:+]; DMARC_POLICY_ALLOW(-0.50)[ifdnrg.com,quarantine]; MX_GOOD(-0.01)[as1.ifdnrg.com,as3.ifdnrg.com]; NEURAL_HAM_SHORT(-0.40)[-0.401,0]; RCVD_IN_DNSWL_LOW(-0.10)[38.98.200.193.list.dnswl.org : 127.0.5.1]; FROM_EQ_ENVFROM(0.00)[]; MIME_TRACE(0.00)[0:+,1:+]; ASN(0.00)[asn:20860, ipnet:193.200.98.0/23, country:GB]; IP_SCORE(-0.19)[asn: 20860(-0.84), country: GB(-0.10)]; MID_RHS_MATCH_FROM(0.00)[]; ARC_NA(0.00)[]; NEURAL_HAM_MEDIUM(-1.00)[-1.000,0]; R_DKIM_ALLOW(-0.20)[ifdnrg.com:s=ifdnrg-default]; FROM_HAS_DN(0.00)[]; TO_MATCH_ENVRCPT_ALL(0.00)[]; NEURAL_HAM_LONG(-1.00)[-0.999,0]; MIME_GOOD(-0.10)[multipart/alternative,text/plain]; PREVIOUSLY_DELIVERED(0.00)[freebsd-questions@freebsd.org]; RCPT_COUNT_ONE(0.00)[1]; DWL_DNSWL_LOW(-1.00)[ifdnrg.com.dwl.dnswl.org : 127.0.5.1]; RCVD_COUNT_TWO(0.00)[2]; RCVD_TLS_ALL(0.00)[] Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: 8bit X-Content-Filtered-By: Mailman/MimeDel 2.1.29 X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 02 Jan 2019 14:03:04 -0000 Is there any obvious problem with running parallel zfs sends onto a target pool, I'm seeing broken pipe messages pretty reproducibly if i have 2 syncs running at the same time and am in a situation where i can't easily guarantee jobs won;t overlap I'm presuming that in principle it's ok to do this, and its some resource issue  ( also, where does the logging go with -v on the receive end, not seeing anythng in /var/log/messages?) thanks Paul -- ------------------------- Paul Macdonald IFDNRG Ltd Web and video hosting ------------------------- t: 0131 5548070 m: 07970339546 e: paul@ifdnrg.com w: http://www.ifdnrg.com ------------------------- IFDNRG 40 Maritime Street Edinburgh EH6 6SA ---------------------------------------------------- Virtual Servers from £50.00pm High specification Dedicated Servers from £150.00pm ----------------------------------------------------