search for: nlb

Hi All, We have a somewhat serious issue around NLB on Windows 2012 and Xen. First, let me describe our environment and then I''ll let you know what''s wrong. 2 X Debian-squeeze boxes running the latest provided AMD64 Xen kernel and about 100GB of RAM. These boxes are connected via infiniband and DRBD is running over this(IPoIB). Ea...

Hello all, The question is not necessarily CentOS-specific - but there are lots of bright people on here, and - quite possibly - the final implementation will be on CentOS hence I figured I'd ask it here. Here is the situation. I need to configure a Linux-based network load balancer (NLB) solution. The idea is this. Let us say I have a public facing load balancer machine with an public IP of, say, 50.50.50.50. It is to receive the traffic (let's say, HTTP traffic) and then route it to two private HTTP servers, let's say, 192.168.10.10 and 192.168.10.11. It has to have persi...

...o_blk_discard *range; + struct bio *bio; + + if (block_size < 512 || !block_size) + return -1; + + range = kmalloc_array(segments, sizeof(*range), GFP_ATOMIC); + if (!range) + return -1; + + __rq_for_each_bio(bio, req) { + u64 slba = (bio->bi_iter.bi_sector << 9) / block_size; + u32 nlb = bio->bi_iter.bi_size / block_size; + + range[n].reserved = cpu_to_le32(0); + range[n].nlba = cpu_to_le32(nlb); + range[n].slba = cpu_to_le64(slba); + n++; + } + + if (WARN_ON_ONCE(n != segments)) { + kfree(range); + return -1; + } + + req->special_vec.bv_page = virt_to_page(range); +...

...o_blk_discard *range; + struct bio *bio; + + if (block_size < 512 || !block_size) + return -1; + + range = kmalloc_array(segments, sizeof(*range), GFP_ATOMIC); + if (!range) + return -1; + + __rq_for_each_bio(bio, req) { + u64 slba = (bio->bi_iter.bi_sector << 9) / block_size; + u32 nlb = bio->bi_iter.bi_size / block_size; + + range[n].reserved = cpu_to_le32(0); + range[n].nlba = cpu_to_le32(nlb); + range[n].slba = cpu_to_le64(slba); + n++; + } + + if (WARN_ON_ONCE(n != segments)) { + kfree(range); + return -1; + } + + req->special_vec.bv_page = virt_to_page(range); +...

We are building an exchange cluster with two front end Outlook Web Access servers. We would like to at least have some sort of failover, and prefereably load balancing for them. The MS recommended way is to use NLB, but for various reasons that's not working with our set up. We are looking to set up a single linux server and use something like LVS to load balance/fail over the connections. Looking at LVS, it looks like it hasn't been updated in a while. Is it stable? Is it still the preferred...

...if (block_size < 512 || !block_size) > + return -1; > + > + range = kmalloc_array(segments, sizeof(*range), GFP_ATOMIC); > + if (!range) > + return -1; > + > + __rq_for_each_bio(bio, req) { > + u64 slba = (bio->bi_iter.bi_sector << 9) / block_size; > + u32 nlb = bio->bi_iter.bi_size / block_size; > + > + range[n].reserved = cpu_to_le32(0); > + range[n].nlba = cpu_to_le32(nlb); > + range[n].slba = cpu_to_le64(slba); > + n++; > + } > + > + if (WARN_ON_ONCE(n != segments)) { > + kfree(range); > + return -1; > + } &g...

...> + return -1; > > + > > + range = kmalloc_array(segments, sizeof(*range), GFP_ATOMIC); > > + if (!range) > > + return -1; > > + > > + __rq_for_each_bio(bio, req) { > > + u64 slba = (bio->bi_iter.bi_sector << 9) / block_size; > > + u32 nlb = bio->bi_iter.bi_size / block_size; > > + > > + range[n].reserved = cpu_to_le32(0); > > + range[n].nlba = cpu_to_le32(nlb); > > + range[n].slba = cpu_to_le64(slba); > > + n++; > > + } > > + > > + if (WARN_ON_ONCE(n != segments)) { > > +...

...> + return -1; > > + > > + range = kmalloc_array(segments, sizeof(*range), GFP_ATOMIC); > > + if (!range) > > + return -1; > > + > > + __rq_for_each_bio(bio, req) { > > + u64 slba = (bio->bi_iter.bi_sector << 9) / block_size; > > + u32 nlb = bio->bi_iter.bi_size / block_size; > > + > > + range[n].reserved = cpu_to_le32(0); > > + range[n].nlba = cpu_to_le32(nlb); > > + range[n].slba = cpu_to_le64(slba); > > + n++; > > + } > > + > > + if (WARN_ON_ONCE(n != segments)) { > > +...

...Department of Mathematics and Computer Science :: ul.Umultowska 87, room: B4-5 :: 61-614 Pozna? :: email: dominikz@amu.edu.pl, dominik.zalewski@gmail.com :: mobile: +48 692484801, phone: +48 618295333 :: gg: 2662959 :: www: http://www.staff.amu.edu.pl/~dominikz, http://tri.wmid.amu.edu.pl, http://nlb.amu.edu.pl

...Severity: enhancement Priority: P5 Component: bridging AssignedTo: netfilter-buglog at lists.netfilter.org ReportedBy: sophal.lee at live.com Estimated Hours: 0.0 Non-IP multicast/broadcast Ethernet does get flooded in all bridge ports as expected (e.g. ARP/NLB/STP all get through). IP packets with multicast Ethernet address gets dropped instead of being broadcast to all bridge ports. I've managed to work around problem by forwarding IP to the broadcast address of ff:ff:ff:ff:ff:ff. However, I think the bridging should determine whether IP packets i...

Hi all, These 2 patches added virtio-nvme to kernel and qemu, basically modified from virtio-blk and nvme code. As title said, request for your comments. Play it in Qemu with: -drive file=disk.img,format=raw,if=none,id=D22 \ -device virtio-nvme-pci,drive=D22,serial=1234,num_queues=4 The goal is to have a full NVMe stack from VM guest(virtio-nvme) to host(vhost_nvme) to LIO NVMe-over-fabrics

Hi all, These 2 patches added virtio-nvme to kernel and qemu, basically modified from virtio-blk and nvme code. As title said, request for your comments. Play it in Qemu with: -drive file=disk.img,format=raw,if=none,id=D22 \ -device virtio-nvme-pci,drive=D22,serial=1234,num_queues=4 The goal is to have a full NVMe stack from VM guest(virtio-nvme) to host(vhost_nvme) to LIO NVMe-over-fabrics

...e Source Destination Protocol Length Info 9225 7.503015 192.168.20.48 xx.xxx.xx.xxx SIP/SDP 886 Request: INVITE sip:004982349663847 at fpbx.de | Frame 9225: 886 bytes on wire (7088 bits), 886 bytes captured (7088 bits) Ethernet II, Src: MS-NLB-PhysServer-01_01:01:05:01 (02:01:01:01:05:01), Dst: D-Link_03:a4:18 (00:1b:11:03:a4:18) Internet Protocol Version 4, Src: 192.168.20.48 (192.168.20.48), Dst: xx.xxx.xx.xxx (xx.xxx.xx.xxx) User Datagram Protocol, Src Port: 5060 (5060), Dst Port: 5060 (5060) Session Initiation Protocol (INVITE) R...

...Destination Protocol Length Info > 9225 7.503015 192.168.20.48 xx.xxx.xx.xxx SIP/SDP 886 Request: INVITE sip:004982349663847 at fpbx.de | > > Frame 9225: 886 bytes on wire (7088 bits), 886 bytes captured (7088 bits) > Ethernet II, Src: MS-NLB-PhysServer-01_01:01:05:01 (02:01:01:01:05:01), Dst: D-Link_03:a4:18 (00:1b:11:03:a4:18) > Internet Protocol Version 4, Src: 192.168.20.48 (192.168.20.48), Dst: xx.xxx.xx.xxx (xx.xxx.xx.xxx) > User Datagram Protocol, Src Port: 5060 (5060), Dst Port: 5060 (5060) > Session Initiation Protocol...

Colleagues- I am working on the design of a fairly large samba deployment, and I am looking for feedback on some of my design ideas. I have 10 buildings spread out in and around a city, all interconnected via 1.5Mb leased lines. There are samba servers in each building. I have some users that move from building to building. We are using primarily windows 98 desktops, with a few 2K and XPP

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