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Questions tagged [iscsi]

iSCSI - SCSI over IP - mount disks across the network

0
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1answer
32 views

Start open-iscsi at startup (systemd)

I'm on debian 8, I have no a lot of knowledge on linux and the last time I used it it was a while again. (when systemd didn't exist). When I do manually start the open-iscsi service the iSCSI drive ...
4
votes
3answers
102 views
+50

Why has open-iscsi two times slower writes than Samba via 10G Ethernet?

On my local file server I have raid-6 on 7x HDD drives. dd if=/dev/zero of=tempfile bs=1M count=2048 conv=fdatasync Local speed test gives me 349 MB/s write speed. Remote writes to Samba from SSD (...
0
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0answers
12 views

Performance issue with debian guests on xenserver with iscsi storage

I am facing a performance issue with my small virtualization environnment. I have two Dell PowerEdge 2950 and a Qnap TS-453-BU. The Dells are equipped with XenServer 6.5.0 and they are attached to an ...
0
votes
1answer
37 views

Ceph iSCSI Gateway installation on Ubuntu 18.04

I'm installing Ceph using Ansible with ceph-ansible project, branch static-3.2. There is a problem with iSCSI Gateway installation. If you are using iscsigws name in inventory file - it shows that ...
2
votes
1answer
28 views

What is difference between path and connection in iSCSI volume?

we have connected few Iscsi volumes. When we execute Get-IscsiConnection it shows connection between target IP address and initiator IP address. But when we execute mpclaim.exe -s -d It ...
0
votes
1answer
21 views

Resize iSCSI LUN from Linux Client

I have a Linux workstation with an iSCSI LUN mapped on the directory /mnt/nas509 the LUN is on /dev/sdb and with a partition /dev/sdb1 I expand it by the NAS Web Interface, and execute this command on ...
3
votes
2answers
69 views

Synology and vmware with 4 way MPIO slow iSCSI speeds

I am trying to achieve high iSCSI speeds between my ESX box, and the synology NAS. I am hoping to achieve a top speed of 300-400 Mb/s. But so far all i've reached is 150 - 170 MB/s. The main test ...
2
votes
1answer
40 views

How to do Iscsi deep discovery?

In our storage array we change the discovery IP. Once the discovery IP is changed, the Multipath connection has to be rebalanced (It should make connection again with new discovery ip). But it is not ...
2
votes
1answer
31 views

How to find which MPIO path is being used for IO?

We were experimenting MPIO with our Storage array. We saw the Get-Iscsisession and Get-Iscsiconnection cmdlet to find the paths created. But during IO ,i would like to know which path has been used. ...
1
vote
1answer
18 views

HP MSA1040 To Two ESX Servers No Switches

I'm looking to buy a HP MSA1040 to use as shared storage (for HA) between two ESX hosts. I don't have a 10gbps switch of any kind in the office. Can I connect 1 of the 10gbps iSCSI to one server and ...
0
votes
1answer
28 views

iSCSI read errors during iPXE boot

EDIT: Substantially updated 2019-02-16 to include additional troubleshooting information. I've had iPXE and iSCSI environments in place for years now, but for the first time I'm attempting to do an ...
2
votes
1answer
35 views

iscsi multipath on CentOS 7, is it possible with existing partition

I have an ISCSI server (NetApp) with multipath support, initially i login (iscsi login from client) with one controller and created an iscsi partition (sdb) in CentOS 7. Also i copied some data's ...
1
vote
1answer
33 views

How to check Unmap event in windows server 2012 R2?

We have created few volumes in storage array. Via Iscsi initiator those volume have been added into host machine which is Windows 2012 R2. For few volumes when we delete the contents ,the volume size ...
0
votes
0answers
79 views

Ccboot clients stuck at booting randomly

I've been using a pxe booting program called ccboot (www.ccboot.com). For those who are unfamiliar, It's essentially a simplified iscsi based pxe booting software for business use There are 5 drives, ...
0
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0answers
22 views

Proxmox HE shared storage redundancy

I am currently reading myself into Proxmox HE clusters. They mention everywhere how important it is to have redundant components (NICs, switches, etc.) but it is never mentioned that the ISCSI target ...
6
votes
2answers
60 views

vSphere P2V Conversion without converting an iSCSI disk

I have a physical Windows 2008 R2 server that connects via iSCSI, over ethernet, to a SAN. I need to convert the server to virtual, but I don't want to convert the iSCSI volume to VMDK, because I don'...
0
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1answer
37 views

Connecting to 2 iSCSI targets on same NAS

I have a NAS device with 2 iSCSI LUNs. These LUNs will only ever be used with one server so no switch is involved. I simply ran a Cat6 cable from a 10GbE port on the Server to a 10GbE port on the NAS....
1
vote
1answer
90 views

how to get kubernetes to mount ext4 volumes over iscsi in journaled mode instead of ordered

I'm running kubernetes on Ubuntu 18.04.1, running some of my pods with mounts via ISCSI. I've noticed recently (maybe due to improperly unmounting the iscsi volume or for other reasons) that at ...
0
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0answers
111 views

LIO iscsi multipath target with multiple ip but single path shown by windows MPIO

I have a centOS 7.6.1810 iscsi target server with latest patch, I am exporting to a windows 2016 v.1607 initiator some multipath lun using 2 different dedicated 10 Gb/s ethernet nics em1 and em2 on ...
1
vote
0answers
40 views

Confused about whether my iSCSI share is available/how to make it so

I am attempting to set up iSCSI with a virtual machine as the initiator and the host as the target. I was looking at these instructions, among others: https://www.tecmint.com/setup-iscsi-target-and-...
-2
votes
1answer
26 views

steps to troubleshoot server when it fails to attach and mount LUNs

How to troubleshoot when Windows Server 2012 R2 connected to SAN via iSCSI fails to attach and mount the LUNs from the iSCSI target
0
votes
1answer
64 views

Multipathing on VMware ESXi is missing

I'm trying to configure a storage multipathing on VMware web client. I'm running the version 6.5.0, build 6765664. The problem is that on my storage section I can't find the option about multipathing. ...
0
votes
1answer
142 views

LV Path is Missing

I have a pacemaker HA cluster with two nodes. Those two nodes use iSCSI disks and they can successfully connect iSCSI disks. However, recently an unknown error happened on my cluster: all the nodes ...
3
votes
2answers
970 views

Why can't I make a failover cluster using iSCSI for shared storage?

I’m trying to build a 2-node failover cluster (sqlnode-1, sqlnode-02) using Server 2016 guest VMs in my Hyper-V-based lab. The problem I have is that the cluster wizard doesn’t recognise my shared ...
2
votes
1answer
158 views

Windows Server Backup (WSB) on iSCSI Disk - space not freed after Backup deletion

I'm at a loss here and wanted to ask for your help. I take care of the IT infrastructures and backups of some external companies. This week, I've already had the same issue of no more space on the ...
0
votes
1answer
29 views

iSCSI: Disk at 100% after some traffic

We have a disk exported via iSCSI. When writing to this particular disk, following issue manifests: Initial speed is decent, then after a few gigabytes of writes i) disk becomes 100% busy ii) disk ...
1
vote
0answers
652 views

iSCSI Target is not visible on Windows Servers

I've recently installed a synology NAS in a business environment. After setting up an iSCSI target, I went to one of the Windows Servers, launched the iSCSI initiator and could not discover the ...
1
vote
0answers
575 views

How to make backup of VMWare ESXi host from Centos 7 using the ISCSI target?

I have the VMware ESXi 6.7 free version as the iSCSI initiator and the iSCSI target with CentOS 7 64bit. All of VMs installed in the iSCSI datastore. Is there any way to sync or copy the file from the ...
2
votes
1answer
38 views

Is live migration causing data corruption?

We have two virtual hosts (Xen 4.9) and live migrate guests between them. The storage of the guests is accessible via iSCSI. That is, a guest running on host A has its storage presented as a straight ...
1
vote
2answers
72 views

Is iSCSI across network wise?

I need an opinion in regards to mapping a QNAP iSCSI LUN in Location A to Server in Location B and find out if its wise to execute this plan or will I end up bottle necking my VPN connection between ...
2
votes
1answer
251 views

iSCSI vCenter/Veeam issue

I have a little pickle here that I cannot seem to find a solution for; As of a few days ago, my backups (VeeamB&R-9.5) started failing with the following error: Veeam output; Error: Cannot ...
1
vote
0answers
106 views

VirtualBox Failover Cluster with iSCSI

I have created 2 identical virtual machines running Windows Server 2008 r2 with the intention of creating a failover cluster environment. I attached an iSCSI device as hard disk to both nodes, but ...
2
votes
1answer
170 views

Adding ubuntu iscsi disk to windows failover cluster

I did this previously with a server on ubuntu 16.04 and targetcli. It worked and is still online today. I'm in need of more storage so I decided to make another machine with ubuntu 18.04 and targetcli-...
3
votes
1answer
669 views

Standard vSwitch static LAG with iSCSI hardware initiators - impossible configuration?

In one site, we have vSphere hosts with 2 10G NICs. Both NICs are in one vSwitch failover policy IP Hash for static LAG (this is to balance/failover VM traffic) Both NICs (HPE 534FLR-SFP+/QLogic ...
1
vote
1answer
145 views

Compatible hard drives for Powervault MD3000i

I recently acquired a Powervault MD3000i with several hard drives already installed, and was looking to see if it were possible to purchase additional hard drives without going directly though Dell. ...
2
votes
1answer
569 views

Cluster Shared Volume Owner Node After reboot

Problem: In a failover-cluster (Hyper-v) the CSV (iSCSI) gets "pulled" to the node that just restarted (after updates) when i don't want it to. I can not find any setting defining CSV owner ...
3
votes
0answers
213 views

FreeNAS iSCSI use - recommended percentage?

I have set up a FreeNAS system on a Dell R310 server with 4x4TB drives on a cross-flashed H200 controller in FreeNAS' own RAID10. I want to use that storage entirely for VM containers that run on ...
2
votes
1answer
175 views

iSCSI won't connect to Win10 ENT or Win SVR '12

I have an issue getting Windows 10 ENT or Windows Server '12 to connect to a Promise Vess 1840i. I have 2 ESXi servers connecting with no issues over iSCSI. When I try and connect with the Windows ...
2
votes
1answer
5k views

How to share a storage between multiple VMs using VMWare ESXi and VSphere?

I have two application servers running in a active/active cluster within a VMWare ESXi (5.5, upgrade to 6.5 in near future) virtual host running VSphere. The application needs a shared, high ...
0
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0answers
79 views

Can I create iscsi targets manually by editing the targetcli configuration file?

Rather than going through the tedious process of setting up about 20 backstore block devices and targets one at a time in targetcli, I'm looking at the config .json file, and it seems like it'd be a ...
0
votes
0answers
44 views

OpenStack with esxi as a storage service, Glassfish inside?

I have a 2 esxi 5.5 and vCenter with openstack and many ISCSI servers, the main idea is to store user files. Users are using JEE WebApp or android app to store files, then a Rest WEBAPI to comminucate ...
0
votes
0answers
41 views

iscsi authetication for ACL only not for whole TPG

I am trying to define authentication per acl basis. I dont want authentication for whole tpg ( target portal group) , instead , i want authentication for single acl only and rest of the acl should ...
1
vote
1answer
3k views

SAN: FC vs SAS vs iSCSI

I am currently preparing for an exam. I thought FC (Fibre Channel) was the transport protocol for SCSI and SAN. But now I read, that you have to decide if you want to use FC (SCSI), SAS or iSCSI in an ...
1
vote
1answer
116 views

starting Virtual Machine on ESXi Host 6.5 standalone host fails

I am having an issue with my iscsi-datastore. My Virtual Machines are making a backup on second HD connected to each Virtual machine. This HDs are located on iscsi-datastore. In windows, Veeam does ...
2
votes
0answers
44 views

Utilizing my old Physical Server [closed]

I have one question regarding a shared storage, hopefully, someone will help to choose. Long story short, I have an old Dell R710 server (Windows 2012) with a bunch of disks (6x2TB 7,2k NLSAS in Raid-...
0
votes
1answer
140 views

GFS2 single writer multiple readers setup

I'd like your advice on a setup I'm implementing in order to allow multiple hosts to share occasionally varying data on shared iSCSI storage. I'm using GFS2 to share access to an LVM2 logical volume ...
5
votes
2answers
70 views

How to easily share local partitions between multiple computers

I am looking for advice. I have a few CentOS 7 virtual machines with ISCSI disks mounted as LVM partitions for application log storage. These virtual machines are already highly loaded (CPU and RAM), ...
0
votes
1answer
614 views

Docker Swarm iSCSI

I'm currently trying to setup a HA infrastructure capable of hosting a Symfony APP. This project is for school purposes. The requirements are the following : We have to use a SAN based model to ...
4
votes
1answer
464 views

Slow ISCSI performance on Windows 10

So i have this diskless / pxe booting environment with 28 clients using a program called ccboot. Client is using kabini based board A68n-5200 Essentially it's 28 clients communicating using ISCSI ...
1
vote
2answers
76 views

Force 2 NICs to specific protocol, ISCSI and SMB

So i have this diskless / pxe booting environment with 28 clients. Essentially it's 28 clients communicating using ISCSI protocol with a single diskless server. The issue we have so far is that ...