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Sat, 14 Sep 2024 09:14:38 -0400 (EDT) Date: Sat, 14 Sep 2024 14:14:36 +0100 From: void To: freebsd-virtualization@freebsd.org Subject: nvme virtualisation string for bhyve Message-ID: Mail-Followup-To: freebsd-virtualization@freebsd.org List-Id: Discussion List-Archive: https://lists.freebsd.org/archives/freebsd-virtualization List-Help: List-Post: List-Subscribe: List-Unsubscribe: X-BeenThere: freebsd-virtualization@freebsd.org Sender: owner-freebsd-virtualization@FreeBSD.org MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8; format=flowed Content-Disposition: inline Content-Transfer-Encoding: 8bit X-Spamd-Bar: --- X-Spamd-Result: default: False [-3.60 / 15.00]; NEURAL_HAM_SHORT(-1.00)[-1.000]; NEURAL_HAM_MEDIUM(-1.00)[-1.000]; NEURAL_HAM_LONG(-1.00)[-1.000]; MID_RHS_NOT_FQDN(0.50)[]; DMARC_POLICY_ALLOW(-0.50)[f-m.fm,none]; R_DKIM_ALLOW(-0.20)[f-m.fm:s=fm1,messagingengine.com:s=fm1]; R_SPF_ALLOW(-0.20)[+ip4:103.168.172.128/27]; RCVD_IN_DNSWL_LOW(-0.10)[103.168.172.156:from]; MIME_GOOD(-0.10)[text/plain]; ARC_NA(0.00)[]; TO_MATCH_ENVRCPT_ALL(0.00)[]; FREEMAIL_FROM(0.00)[f-m.fm]; RCVD_TLS_LAST(0.00)[]; RCPT_COUNT_ONE(0.00)[1]; MIME_TRACE(0.00)[0:+]; RCVD_COUNT_THREE(0.00)[3]; FROM_HAS_DN(0.00)[]; FREEMAIL_ENVFROM(0.00)[f-m.fm]; PREVIOUSLY_DELIVERED(0.00)[freebsd-virtualization@freebsd.org]; TO_DN_NONE(0.00)[]; FROM_EQ_ENVFROM(0.00)[]; DKIM_TRACE(0.00)[f-m.fm:+,messagingengine.com:+]; MLMMJ_DEST(0.00)[freebsd-virtualization@freebsd.org]; RCVD_VIA_SMTP_AUTH(0.00)[]; RWL_MAILSPIKE_POSSIBLE(0.00)[103.168.172.156:from]; MISSING_XM_UA(0.00)[]; ASN(0.00)[asn:209242, ipnet:103.168.172.0/24, country:US]; DWL_DNSWL_NONE(0.00)[messagingengine.com:dkim] X-Rspamd-Queue-Id: 4X5WqM3xvfz4SCp Hi, I have a vm in bhyve. The virtual disk is a ssd zvol, and the zpool the zvol is on is composed of two ssds in a stripe. The ashift=12. The host OS is recent -current I usually start my vms with a bhyve variable for the disk like: -s 4,virtio-blk,/dev/zvol/ssd/vm2 \ The man page for bhyve says this: ### NVMe device backends ### • devpath[,maxq=#][,qsz=#][,ioslots=#][,sectsz=#][,ser=#][,eui64=#][,dsm=opt] How do I get this information? Like maxq qsg ioslots sectorz ser eui64 dsm The ssds are: nvme0: nvme1: The ssds are of different sizes and different nvme versions: nda0: nvme version 1.2 nda0: 3815447MB (7814037168 512 byte sectors) nda1: nvme version 1.0 nda1: 1907729MB (3907029168 512 byte sectors) thanks in advance for any tips/advice --