iSCSI - SCSI over IP - mount disks across the network

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Log in to a single LUN of a target with iscsiadm (open-iscsi)?

Is it possible to connect to only a single LUN of an iscsi target when using iscsiadm? I have a target like "iqn.0000-00.iscsi.foo:bar" this target has 1000 LUN's. If I do iscsiadm -m node -l -T ...
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Automatically build kernel modules after unattended upgrades in ubuntu

For automatic upgrades I has installed unattended-upgrades package and configured it. After each unattend kernel upgrade I must run following commands to recompile iscsi kernel modules: apt-get ...
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How many clients on lower end iSCSI targets? [duplicate]

Was wondering if anyone has built an iSCSI server on current AMD hardware. I ask because i am slowly implementing ccdisk on a 28 machine internet cafe. Now i am starting to question my build. I ...
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25 views

Is it good idea to use Data Deduplication in VM on iSCSI LUN (Synology)?

I have a VM which will act as File server (Windows Server 2012 R2). VM's VHDX is placed on CSV disk (Synology iSCSI LUN). Size of VM's data volume is 10 TB. Synology model - RS3614RPxs Is it good ...
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24 views

How do I expand a PowerVault MD3000i virtual disk?

I have a PowerVault MD3000i connected to a PowerEdge 1950 via iSCSI. The MD3000i has ~7TB of space. We want to use pretty much all of this space as one large file server configured with RAID 5. We ...
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VMWare ESXi and iSCSI via FreeNAS

I've recently been setting up a sandbox ESXi environment with a VM running FreeNAS providing a volume which is connected as a datastore on the host via iSCSI. I've created a VM on this datastore and ...
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iSCSI to NetApp FAS: high latency for write load

Problem A Linux iSCSI initiator is seeing high service times when writing to a NetApp FAS target exposing a bunch of LUNs. Where to look for the cause and how to resolve this? Reproduction I am ...
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How can I specify the devices for an iscsi target?

I have an AWS Storage gateway that exposes two iscsi targets. I am attaching them to an EC2 instance running Amazon Linux: iscsiadm --mode node --targetname gateway.com.amazon:volume1 --portal ...
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32 views

Shared filesystem between KVMs

If I want to have shared fs between multiple kvm machines what is the best way to go when I'm already using ceph. I accessing my kvm disks directly through rbd devices but with ext4 on top of this ...
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Setup iscsi target without CHAP failure

I have been trying to connect to the Target with no luck. I can see the iqns but authentication fails. I checked the config files for CHAP and its disabled by default. ...
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Install SLES11 sp3 on HP BL460c Gen9 server with 650 FLB controller

I am trying to install SLES11 sp3 on HP BL460c Gen9 server with 650 FLB controller connected to a SAN over iSCSI, I need to install SLES on the remote SAN On the Disk Activation page while ...
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Configure HP BL460c Gen9 with external iSCSI SAN

Hi I am very new to servers. I have a HP BL460c Gen9 server with 650 FLB controller in Legacy mode. I need to connect this to a external SAN through iSCSI. I am not able to go to the NIC BIOS by ...
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107 views

XenServer, mapping SAN LUN to VDI

I have a few XenServer 6.2/6.5 hosts, and ZFS SAN datastore, providing iSCSI exports for VM storage. It's not an optimal solution to export huge 1-2 Tb LUN as XenServer LVMoiSCSI SR, because: a) no ...
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28 views

ISCSI vs ISCSId Services

From ISCSI clients, we execute # systemctl start iscsi. However, i can see there is another service called iscsid. Can anybody explain about iscsi service vs iscsid service in rhel7.?
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Deployment of Base-Node via iSCSI in Server 2012R2 HPC cluster fails (can not join domain)

We are currently evaluating Server 2012R2 with HPC Pack for an upcoming project. Sadly we are stuck at deploying the base node. The node boots via PXE (iPXE) and connects to iSCSI, installs Windows ...
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75 views

iSCSI Initiator: Targets Lost Server 2012 R2

I rebooted my servers last night after do a routine cleaning. When they came back online I saw my network maps had not reconnected so I investigated. Opening the iSCSI initiator screen every action I ...
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iSCSI on Windows Server 2003 data not showing on Windows Server 2012

I have a Western Digital My Cloud EX2 drive with 4TB RAID 1. I created a iSCSI Target on the disk and set up 2 initiators. One on Windows Server 2003 and one on Windows Server 2012 R1. My purpose ...
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Providing shared file level storage from a SAN

I'd like to get some advice on a system I'm setting up. I'm not quite sure which way to proceed. The goal is just some basic user storage space (Clients are Linux, Windows, and mac) that is baked by ...
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60 views

PAGE_FAULT_IN_NONPAGED_AREA (msiscsi.sys) - how to troubleshoot/resolve?

I am using Windows 8.1 Pro x64 with all updates installed. My machine is Lenovo W540 laptop and I have connection to iSCSI target (using gigabit wired Ethernet). iSCSI target is Synology NAS (DS415+). ...
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1answer
37 views

Persistent ESXi iSCSI datastore from guest VM based target? [closed]

I'm in the process of building a home lab environment for Cisco and VMware that will also double as a NAS. The system runs ESXi v6.0 bare metal. Part of my design is that I have a Lenovo TS440 with ...
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67 views

Windows Server 2008 R2 Standard Dropping Packets

I am seeing a strange problem with my WS2008R2 server I believe is related to networking. The symptom is that 6% of all attempts to ping the server using tcp fails. For example, from another machine, ...
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Source IP of VMware storage paths

I have an iSCSI array that is working fine with my VMware host. I'd like to disable several paths because they don't have end-to-end jumbo frames. For the life of me I can't tell what the source IP ...
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62 views

Hyper-v ISCSI Network Setup

I have Hyper-v installed on Windows Server 2012 R2. We are using 2 x Dell R730xd's with 8 NICS (4x10GigE 4x1GigE) per host. I would like to dedicate 2 NICS to our ISCSI network, however I am unsure ...
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Incredibly slow snapshot removal

I have an ESXi box with HP LeftHand storage exposed via iSCSI. I have a virtual machine with a 1TB disk, of which 800GB is consumed. The disk is thick provisioned on the LeftHand storage. A snapshot ...
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101 views

Why doesn't ESXi see the LUN in my Server 2012 iSCSI target?

I don't see what I'm missing here. In Server 2012, I installed the roles, created the virtual iSCSI disk, selected "create a new target" for this disk, named it, grabbed the IP and IQN of the ESXi ...
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74 views

Using a NAS as iSCSI to share a volume via Windows 2012 vs CIFS/Windows share

I'm migrating an Active Directory Windows 2003 server to Windows Server 2012 R2. Currently, I have a MyDocuments redirection policy enabled on the Window 2003 server to a local drive. Since the ...
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35 views

windows server 2008 R2 backup issue

I have configured and iSCSi drive by using iSCSi Initiator for a windows server 2008 R2 for the purpose of storing backup but when I try to run backup schedule and assign the iSCSi drive as a backup ...
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211 views

Windows - mount network drive with client-side read/write caching from Linux storage server

Is there a way to mount network drive on Windows with client-side read/write cache enabled? In my case drive is guaranteed to be mounted by 1 user, and performance is way more important than ...
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1answer
75 views

SATA drivers in Debian squeeze

I have Debian Squeeze installed on a compact flash card in ATA port. I copied the whole system to SATA drive but system holds in initramfs because can't mount root file system. I know that my system ...
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Linux iSCSI - Limit max concurrent sessions

I would like to understand if, and how to, limit the maximum number of simultaneous connections to a specific LUN under CentOS Linux, both with the old iSCSI stack (tgtadmin and friends) and the new ...
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iSCSI steps between 1Gb/s and 10Gb/s [closed]

So, I am in the process of building out a iSCSI system based off freeNAS. This is being connected to a few (around 20ish) ESXi 5.5 boxes. These ESXi boxes only have the boot drive and a few Gb of ...
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iScsiPrt errors preventing system from returning from display rest

I am encountering a weird error in Windows 7 x64 Ultimate SP1. At random intervals, when coming back to the computer after being away long enough for the screen to rest, it will instead come back to a ...
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47 views

MySQL intermittently fails to come up when data directory is configured on SAN via iSCSI

I am running Ubuntu Linux 14.04.2 on a Dell R610 Server. This box is used to host the MySQL service for my applications. The MySQL data directory is mounted on DELL SAN Equallogic so this box is also ...
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63 views

iSCSI or network share

Our new NAS has four network ports that are linkable and I would like to utilise that extra potential capacity. Should I; 1 - create an iSCSI volume, with its lower overhead, connect the main file ...
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How to automatically remount iscsi drive, after network errors on Vmware + FreeNAS

Is it possible to force Ubuntu to remount, rescan storage in time manner, to automatically mount it in rw mode? I have a Ubuntu virtual machine on VMware server. And have physical FreeNAS server ...
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254 views

Connecting Windows iSCSI initiator to Centos iSCSI target

Goal: To have my Linux VPS serve as an iSCSI disk for a Windows Why: Management of the storage space on a Linux box and to reduce cost of licensing. OS: Centos 6 (Target) Windows Server 2012 ...
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Storing backups on a remote filesystem

I have a FreeNAS solution, in which I'll would like to save my backups. Currently I was doing some scripting to rsync/tarball, but I want a something more easy to manage, so I figure out, to run a ...
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576 views

vSphere Datastore for specific datatypes: NFS or iSCSI

I am looking into improving performance in my vSphere environment. We are using a NetApp appliance with all VMs stored in Datastores that are mounted via NFS. It was suggested to me that, for some ...
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Can iSCSI and Internet work on same NIC? [closed]

I have a Synology RS815+ that supports iSCSI with 4 GbE ports. I have two Mac Mini's (2014) with built-in GbE and a TB to GbE adapter. All 8 connections are tied to the same switch, with client ...
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Can't attach iSCSI with multipathing in Citrix XenServer

Dear people of the world. I have a problem reattaching an iSCSI target on XenServer after a reboot. Whenever I try, I get several errors. Here's me in the attach screen on the redundant storage ...
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10Gb ISCSI to 1Gb server port

I have this setup in mind. Md3800i 4 10GBps Iscsi. 2 del r730 4 1Gbps ports. I will use this storage to backups and low profile mass storage. So i don't won't to put HBAs in the server. ...
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Poor iSCSI performance with SSD disks and 10 Gbe network

iSCSI Target Ubuntu 14.04 (Trusty Tahr) with 16 GB RAM and 16 core CPU as LVM backed iSCSI target using three Samsung SSD disks, each capable of doing 65k IOPS using an LSI 6 Gbit/s ...
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nova volume-detach fails silently, compute log shows libvirtError: invalid argument: no target device vdb

Using Openstack Havana, I'm trying to detach a cinder volume from a nova instance. Nova volume-list shows it as in-use: | 34b0ea26-f85c-4b62-8ebd-884b0e63e2d5 | in-use | filestore | 256 | None| ...
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2answers
280 views

How to know when to properly use iSCSI, NFS or SMB?

I have a File Server running Windows Server 2012 R2. It has four 6TB Western Digital RED drives. I want to host my Hyper-V Machines, WSUS (Windows Server Update Service) content and WDS/MDT deploy ISO ...
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128 views

Multiple iSCSI LUNs to one Server

I'm reasonably sure i'm ok to do this, but I would love some confirmation. Simple question, can I have two LUNs from the same SAN attached to the same server? More detail: I have a HP MSA2000 SAN, ...
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ISCSI drives suddenly lost partitions

We have a VM host, and each VM is given an ISCSI volume to boot off of. These ISCSI volumes are stored on a second server. Today, we had to reboot the VM host because ISCSI hosts kept going into ...
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2answers
405 views

Performance for ZVOLs presented over iSCSI?

I have the following setup for testing: HP Microserver N36L (Dual-core low-power Athlon64) 8GB ECC RAM 2-port Intel Gigabit NIC 4x3TB WD Green (5400 RPM?) 1 sata disk for OS image (FreeBSD 10.1) ...
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92 views

Multipath configuration is ignoring drives after /dev/sdaa, /dev/sdab, etc

I have a bare metal server running on Softlayer. It has many Consistent Performance iSCSI storage devices attached in a multipath configuration. One of the devices, represented by /dev/sdaa1 and ...
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694 views

XenServer 6.5 iSCSI MPIO with point-to-point links (without a Switch)

I'm doing some experiment with iSCSI MPIO between FreeNAS 9.3 and two XenServer 6.5 hosts. I would like to use iSCSI MPIO to serve as VM storage. Pretty common environment, but without a switch to ...
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OCFS2 “Heartbeat generation mismatch on device” error when mounting iscsi target

As said in the title, when I want to mount a iSCSI target on one machine I get the following error: (o2hb-3F92114867,7826,3):o2hb_check_own_slot:590 ERROR: Heartbeat generation mismatch on device ...