Date: Tue, 26 Apr 2016 18:30:37 +0200 From: Miroslav Lachman <000.fbsd@quip.cz> To: Jeremy Faulkner <gldisater@gmail.com>, freebsd-fs@freebsd.org Subject: Re: How to speed up slow zpool scrub? Message-ID: <571F97AD.9080107@quip.cz> In-Reply-To: <571F9064.2010602@gmail.com> References: <571F62AD.6080005@quip.cz> <571F687D.8040103@internetx.com> <571F6EA4.90800@quip.cz> <571F82B5.3010807@gmail.com> <571F845C.5060902@quip.cz> <571F9064.2010602@gmail.com>
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Jeremy Faulkner wrote on 04/26/2016 17:59: > > > On 2016-04-26 11:08 AM, Miroslav Lachman wrote: >> Jeremy Faulkner wrote on 04/26/2016 17:01: >>> zfs get all tank0 >> >> I set checksum=fletcher4 and compression=lz4 (+ atime & exec to Off), >> anything else is in default state. >> >> There are 19 filesystems on tank0 and each have about 5 snapshots. >> >> I don't know how long scrub runs on some others system. If it is limited >> by CPU, or disk IOps... but for me 3 - 4 days are really long. [...] > Check the drive health with smartctl (part of sysutils/smartmontools). > Are the drives desktop drives or nas drives? In gstat is one drive > busier than the rest? If so, replace that drive. Drives are OK, smartd is running on the background, I have monitoring of some SMART values and all drives are loaded equally. Model Family: Seagate NAS HDD Device Model: ST4000VN000-1H4168 Miroslav Lachman
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