Date: Wed, 15 Nov 2017 15:19:43 +0100 From: Harry Schmalzbauer <freebsd@omnilan.de> To: Peter Grehan <grehan@freebsd.org> Cc: freebsd-virtualization@freebsd.org Subject: Re: pci_virtio_block.c Assertion failed: line 216 Message-ID: <5A0C4CFF.7040902@omnilan.de> In-Reply-To: <2a8308c3-1570-08a3-a993-0f699fcd267d@freebsd.org> References: <586BFC91.4090404@omnilan.de> <2a8308c3-1570-08a3-a993-0f699fcd267d@freebsd.org>
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Bezüglich Peter Grehan's Nachricht vom 03.01.2017 20:36 (localtime): > Hi Harry, > >> trying to use bhyve(8) with virtio-blk and Windows guest results in core >> dump: >> Assertion failed: (n >= 2 && n <= BLOCKIF_IOV_MAX + 2), function >> pci_vtblk_proc, file usr.sbin/bhyve/pci_virtio_block.c, line >> 216. >> Abort trap (core dumped) >> >> Unfortunately this is on a production-test machine which lacks gdb etc. >> Will try to reproduce on antoher machine, but maybe someone already >> knows that problem? > > virtio-blk isn't currently supported with Windows guests. You'll need > to use ahci-hd for now. > > However, I do have a fix that can hopefully be committed shortly. … Mising in another reply: >> Wiadomość napisana przez Harry Schmalzbauer <freebsd@omnilan.de >> <mailto:freebsd@omnilan.de>> w dniu 03.01.2017, o godz. 20:33: … >> Will try to reproduce on antoher machine, but maybe someone already >> knows that problem? > > I've seen that problem and fixed it, will upstream the patch later today. > > JFYI, fixing > commit: https://github.com/freenas/os/commit/0e4d6e1826f8aa7041cbeeb4365c797eeec5c5f4 Thanks Jakub for the info. I can confirm that increasing BLOCKIF_IOV_MAX from 33 to 128, like the diff shows, solved the problem for me. I've successfully done some performace tests on Windows7 (virtio-blk vs. ahci,hd:) and also migrated one Server 2012R2 to bhyve using virtio-blk. Peter, is your mentioned fix different from just increasing BLOCKIF_IOV_MAX? If not, would you commit that please? Thanks, -harry
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