Date: Mon, 13 May 2019 13:58:32 +0000 From: bugzilla-noreply@freebsd.org To: fs@FreeBSD.org Subject: [Bug 237807] ZFS: ZVOL writes fast, ZVOL reads abysmal... Message-ID: <bug-237807-3630-wvnf2p47Nv@https.bugs.freebsd.org/bugzilla/> In-Reply-To: <bug-237807-3630@https.bugs.freebsd.org/bugzilla/> References: <bug-237807-3630@https.bugs.freebsd.org/bugzilla/>
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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=237807 --- Comment #7 from Nils Beyer <nbe@renzel.net> --- (In reply to crest from comment #6) the ZVOLs are used for ReFS-formatted (64kB cluster size) Veeam backup repositories connected via iSCSI and 10GBit: ============================================================================== morsleben-grube2/dshyp02-veeam type volume - morsleben-grube2/dshyp02-veeam creation Fri Mar 29 11:01 2019 - morsleben-grube2/dshyp02-veeam used 40.2T - morsleben-grube2/dshyp02-veeam available 12.8T - morsleben-grube2/dshyp02-veeam referenced 30.4T - morsleben-grube2/dshyp02-veeam compressratio 1.00x - morsleben-grube2/dshyp02-veeam reservation none default morsleben-grube2/dshyp02-veeam volsize 40T local morsleben-grube2/dshyp02-veeam volblocksize 64K - morsleben-grube2/dshyp02-veeam checksum on default morsleben-grube2/dshyp02-veeam compression lz4 inherited from morsleben-grube2 morsleben-grube2/dshyp02-veeam readonly off default morsleben-grube2/dshyp02-veeam createtxg 76 - morsleben-grube2/dshyp02-veeam copies 1 default morsleben-grube2/dshyp02-veeam refreservation 40.2T local morsleben-grube2/dshyp02-veeam guid 10198386066639651165 - morsleben-grube2/dshyp02-veeam primarycache metadata local morsleben-grube2/dshyp02-veeam secondarycache none local morsleben-grube2/dshyp02-veeam usedbysnapshots 0 - morsleben-grube2/dshyp02-veeam usedbydataset 30.4T - morsleben-grube2/dshyp02-veeam usedbychildren 0 - morsleben-grube2/dshyp02-veeam usedbyrefreservation 9.78T - morsleben-grube2/dshyp02-veeam logbias latency default morsleben-grube2/dshyp02-veeam dedup off default morsleben-grube2/dshyp02-veeam mlslabel - morsleben-grube2/dshyp02-veeam sync standard default morsleben-grube2/dshyp02-veeam refcompressratio 1.00x - morsleben-grube2/dshyp02-veeam written 30.4T - morsleben-grube2/dshyp02-veeam logicalused 30.5T - morsleben-grube2/dshyp02-veeam logicalreferenced 30.5T - morsleben-grube2/dshyp02-veeam volmode default default morsleben-grube2/dshyp02-veeam snapshot_limit none default morsleben-grube2/dshyp02-veeam snapshot_count none default morsleben-grube2/dshyp02-veeam redundant_metadata all default ============================================================================== Using CTL as the iSCSI target (4k blocksize) for the Windows Server 2016 hosts: ============================================================================== lun 0 { path /dev/zvol/morsleben-grube2/dshyp02-veeam blocksize 4k } ============================================================================== Nothing else besides "ctld" is running on the storage system... -- You are receiving this mail because: You are the assignee for the bug.
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