Date: Mon, 23 Feb 2015 23:31:34 +0100 From: "Frank de Bot (lists)" <lists@searchy.net> Cc: freebsd-stable@freebsd.org Subject: Re: ZFS L2arc 16.0E size Message-ID: <54EBAA46.1020705@searchy.net> In-Reply-To: <20150223172452.GA44463@zxy.spb.ru> References: <54E1388C.3060602@searchy.net> <54E13F41.7000703@multiplay.co.uk> <20150222212135.GA64559@zxy.spb.ru> <20150223172452.GA44463@zxy.spb.ru>
next in thread | previous in thread | raw e-mail | index | archive | help
Slawa Olhovchenkov wrote: > On Mon, Feb 23, 2015 at 12:21:35AM +0300, Slawa Olhovchenkov wrote: > >> On Mon, Feb 16, 2015 at 12:52:17AM +0000, Steven Hartland wrote: >> >>> IIRC this was fixed by r273060, if your remove your cache device and >>> then add it back I think you should be good. >> >> r273060 will be reverted. >> I am use stable (r276179) and still have (partialy) this problem: >> >> cache - - - - - - >> ada0 477G 477G 16.0E - 0% 100% >> ada1 477G 477G 16.9M - 0% 99% >> da2 477G 477G 25.0M - 0% 99% >> da3 477G 477G 14.6M - 0% 99% >> da4 477G 477G 30.6M - 0% 99% >> da5 477G 477G 15.0M - 0% 99% >> da6 477G 477G 298K - 0% 99% >> da7 477G 477G 18.2M - 0% 99% > > same server, some time late: > cache - - - - - - > ada0 477G 477G 16.8M - 0% 99% > ada1 477G 477G 32.1M - 0% 99% > da2 477G 477G 5.70M - 0% 99% > da3 477G 477G 16.0E - 0% 100% > da4 477G 477G 26.1M - 0% 99% > da5 477G 477G 26.6M - 0% 99% > da6 477G 477G 16.0E - 0% 100% > da7 477G 477G 16.0E - 0% 100% > > hmm, -p don't affect -v values. Tonight I had run some tests: - Disabling compression (by changing ZIO_COMPRESS_LZ4 to ZIO_COMPRESS_OFF in sys/cddl/contrib/opensolaris/uts/common/fs/zfs/arc.c in l2arc_compress_buf - disabling trim by vfs.zfs.trim.enabled=0 in loader.conf - trying to prevent io queues, but I don't think this was good. I was thinking there maybe is a possibility that between filling a writebuffer for a vdev the size of l2arc was checked, but didn't take in account that not all data is there (I really don't have a clue if this makes any sense) None of these test were successful, every time free space is 16.0E and used space keeps on growing and growing. Slawa, I do notice that first ada0 was at 16.0E, but at your second post not anymore.
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?54EBAA46.1020705>