Date: Wed, 08 Jul 2015 15:19:19 +0100 From: Matthew Seaman <m.seaman@infracaninophile.co.uk> To: freebsd-fs@freebsd.org Subject: Re: Speeding up resilvering Message-ID: <559D3167.1000705@infracaninophile.co.uk> In-Reply-To: <559D2C7C.6060201@denninger.net> References: <559D2AB6.5070007@FreeBSD.org> <559D2C7C.6060201@denninger.net>
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This is an OpenPGP/MIME signed message (RFC 4880 and 3156) --0vIn11cr7atgHNNdPN6Dr7L5Aol8EfJva Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable On 2015/07/08 14:58, Karl Denninger wrote: > On 7/8/2015 08:50, Matthew Seaman wrote: >> Hi, >> >> I've a zpool which is taking an inordinately long time to resilver and= >> replace a device. It had only got to about 8% completion after a day,= >> implying over a week to resilver about 6TB data. >> >> Now, I've applied the resilver performance tuning sysctls from >> https://wiki.freebsd.org/ZFSTuningGuide: >> >> vfs.zfs.scrub_delay=3D0 >> vfs.zfs.top_maxinflight=3D128 >> vfs.zfs.resilver_min_time_ms=3D5000 >> vfs.zfs.resilver_delay=3D0 >> >> but it doesn't seem to have made a great deal of difference. Most of >> the benefit there would apparently come from reducing scrub_delay or >> resilver_delay -- but this system is only booted to single user mode, = so >> the drives are otherwise idle and the resilver should have automatical= ly >> switched to running full throttle anyhow. >> >> Given the machine is not going to be doing anything else other than >> resilvering for the time being, is there any more aggressive tuning or= >> tricks to get it to go faster that people would recommend? >> >> Cheers, >> >> Matthew >> >=20 > What OS version? >=20 10.1-RELEASE-p10 Cheers, Matthew --0vIn11cr7atgHNNdPN6Dr7L5Aol8EfJva Content-Type: application/pgp-signature; name="signature.asc" Content-Description: OpenPGP digital signature Content-Disposition: attachment; filename="signature.asc" -----BEGIN PGP SIGNATURE----- Comment: GPGTools - https://gpgtools.org iQJ8BAEBCgBmBQJVnTFvXxSAAAAAAC4AKGlzc3Vlci1mcHJAbm90YXRpb25zLm9w ZW5wZ3AuZmlmdGhob3JzZW1hbi5uZXQxOUYxNTRFQ0JGMTEyRTUwNTQ0RTNGMzAw MDUxM0YxMEUwQTlFNEU3AAoJEABRPxDgqeTnDRIP/iMrFSeTk8KOIit94mvlLrOD suQz5ZL65QSDRyrBtRsD1PSVCLgkpG+DPTIOFeWd0ES6qhZrsXKj4saaJoIsR9LN sTZhXcUxZHIhK7IItZYlo+8jVJtgsg8fiPaMU76sjPH1lc2VS9LsD71Zs0FujU80 fFvtkn0jreC9A48X/5e3e/ueh8Ny1kLxr5dUkFDnvLaoo+CUBe4GqdBXvCaAlBsS KPBeztNypJD0FCVa79XYb0RCFhD2LquzkfOmm4bhbjTJqYEeqzPOZeZcjtu1Rm5c r8mnRMEeGbnPVJQFejHxz4MO4JcTmNpKAiejHSM5WM2KrXFE8orp3dJ9xhA+2wpO WfvTMJ0W4BWnjBC+AjFE9AlV8yKsiSPlj6ntcU3QrVMoZVIvZB3mHST2g3t9rap+ SXNK3wovTb0XSTFrNFGyzFyJjJZdGw9JdDqLjaG6+IkvYUqJlE0dhskPeQDYLdRc zNQYre5cFqLr5fcSe2+SR059fI2p/CkJOvIQ5ONzL4o6JXMULxR96jK9ib8ZSsUd ENKE+1qkFtDKWv7sX4Ns6yIaRck8hibrVSsmBvJGfugBcLIubPKMr7f+dTlCe2mf iWyK+7qzZftGbJPBeVYAWHQjrsT4z+1dfaJ0jv1qfJGCRV1C8KSXF0IBR1tKf69C X5/9cBczGduqox4acfoT =oEf/ -----END PGP SIGNATURE----- --0vIn11cr7atgHNNdPN6Dr7L5Aol8EfJva--
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