iSCSI - SCSI over IP - mount disks across the network

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OpenStack Cinder: iSCSI login negotiation failure after reboot

I have a Cinder storage and controller node running on the same CentOS 7 box as Nova compute. Everything worked fine, until I rebooted. Now my instances can't mount volumes and I get the errors below. ...
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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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997 views

iscsi TGTD gets continuous tgtd: conn_close(100) connection closed, 0x10b9288 1

I have a NAS server running tgtd on Centos 6. In my /var/log/messages, I an getting a constant entry every 3 seconds: Sep 26 22:21:24 san2 tgtd: conn_close(100) connection closed, 0x1143728 1 Sep ...
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2k views

Enable Flow Control on a VMware vSwitch

I can't figure out how to enable Flow Control on a VMware vSwitch. I've been talking with Equallogic and VMware, and they said we need it on for better performance. I can't find out how to enable it ...
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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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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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366 views

Debian 7: HA NAS with pacemaker, drbd and iSCSI

I currently am trying to make a highly available NAS under debian 7. I am using following packages: drbd8-utils iscsitarget iscsitarget-dkms pacemaker corosync ...
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692 views

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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1k views

Fine tuning iSCSI Initiator configuration in Windows Server 2008 R2

I've set up a 3 node cluster with Windows Server 2008 R2. I need to connect to these nodes a lot of lun (18 LUN on each node; not my decision... :( ). After digging a while with iSCSI Initiator ...
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3answers
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How to use iSCSI MPIO to increase bandwidth with XenServer?

I have a FreeNAS Server with four network interfaces. The iSCSI traffic goes through two of those interfaces, and each interface has one IP address in a different subnet. As example: igb0: ...
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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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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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2answers
55 views

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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24 views

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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31 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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21 views

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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ShadowCopy Error 7001 (Unable to create a shadow copy) but SC got created and works fine, what to do?

I'm running Windows Server 2008 R2 on a Dell R410. A QNAP NAS is connected to it via gigabit crossover. A 2.6 TB LUN is mounted via iSCSI as Volume Z:. A task should create Shadow Copies three times ...
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104 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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22 views

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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661 views

How to force iscsi initiator to login only once

Trying to setup a few CentOS nodes to connect to a Dell MD3600i array, I'm running into the issue that the MD3600i shows 4 different portals (with different IP addresses). When I launch the initiator ...
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Volume manager of Windows Server 2008 R2 does not show all iSCSI volumes

We set up a backup server (Windows 2008 r2) for our VMware infrastructure which uses an iSCSI SAN for storage. The backup server has to be connected to the SAN for Veeam to be able to backup virtual ...
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fdisk -l do not detect device accessed using iSCSI on XEN virtual machine

I am experiencing an issue when accessing the iSCSI target in VMs created on XEN hypervisor. I have used SUSE 11 SP3 to configure this. After discovering the iSCSI targets from VM, I am able to view ...
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397 views

Connecting to EqualLogic with Starwind Starport Initiator, login trouble?

We have a working iSCSI SAN, an Equallogic, which runs fine with the Microsoft iSCSI initiator. With the Starport Initiator, we can't even connect. There's no login needed, neither local nor LDAP. ...
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2k views

iSCSI target volume does not show on Windows 7 iSCSI Initiator

I have a Windows VPS sitting in a DC and another Linux box sitting in another data centre. My Windows VPS (running on Windows 7 64 bit) have a small hard drive and cost a lot to upgrade, and the Linux ...
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241 views

Does the FreeNAS target make use of iSCSI offload cards?

When using a FreeNAS as iSCSI target, would it use the iSCSI offload engine on cards that have it, or is it an initiator-only feature? For clarification, I want to know if a supported iSCSI offload ...
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2k views

CentOS 6.4 iSCSI Target - crm shell error

I try to make a iSCSI Target on CentOS 6.4 with DRBD, Pacemaker, Open-iSCSI and LVM2. Now I need to prepare the HA iSCSI Target configuration on the crm shell, but if I enter the configure mode, ...
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1k views

How to connect SAN from CentOS through two iSCSI Targets

I had asked the similar question before. This time I want to use subnet for two iSCSI Targets, hence I start a new question. I have an old Promise VTrak M500i SAN Server. It comes with 2 iSCSI ports. ...
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Removing an iSCSI Target - iSCSI initiator 2.0 on Windows Server 2003 R2

For the life of me I cannot figure out how to remove an iSCSI target (Dell Equallogic SAN) from a Windows Server 2003 box. The volume shows up in Windows as drive letter Y. Using the iSCSI ...
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iSCSI: LUNs per target?

My question relates specifically to ZFS/COMSTAR but I assume is generally applicable to any iSCSI system. Should one prefer to create a target for every LUN that you want to expose? Or is it good ...
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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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1answer
301 views

iSCSI target rebooting causes initiators to reboot as well

I'm running a couple of iSCSI Targets with OCFS2. I had to reboot my iSCSI Target (the physical iSCSI Target) due to some hardware changes and it caused all the initiators to reboot. I want to prevent ...
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Fatal: module iscsi_trgt not found — trying to get my iscsi target to run on debian

My server info: Linux Microknoppix 2.6.39.3 #21 SMP PREEMPT Sat Jul 23 09:48:39 CEST 2011 i686 GNU/Linux modprobe iscsi_trgt results in FATAL: Module iscsi_trgt not found. So I run # ...
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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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36 views

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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36 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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228 views

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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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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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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How to best tune Dell PowerVault MD3600i SAN/Initiators for best performance?

Recent owner of a Dell PowerVault MD3600i i'm experiencing some weird results. I have a dedicated 24x 10GbE Switch (PowerConnect 8024), setup to jumbo frames 9K. The MD3600 has 2 RAID controllers, ...
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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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3k views

iSCSI / SAN / Cluster / multiple NICs failover

Got a problem with NIC failover with iSCSI. Setup: A server with 3 NICs. One NIC is local network, other 2 are SAN. Using Microsoft iSCSI Initiator. A managed network switch. A QNAP SAN, connected ...
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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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549 views

iscsi not working after host reboot

I have a host that is acting as both an iscsi initiator and target. It's an OpenStack box that acts as both the storage node (cinder) and also as a compute node. There is also another compute nodes on ...
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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 ...