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>
index | next in thread | previous in thread | raw e-mail
[-- Attachment #1 --] 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=0 >> vfs.zfs.top_maxinflight=128 >> vfs.zfs.resilver_min_time_ms=5000 >> vfs.zfs.resilver_delay=0 >> >> 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 automatically >> 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 >> > > What OS version? > 10.1-RELEASE-p10 Cheers, Matthew [-- Attachment #2 --] -----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-----home | help
Want to link to this message? Use this
URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?559D3167.1000705>