iSCSI - SCSI over IP - mount disks across the network

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2
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1answer
1k views

Install xenserver on iscsi target

Is is know that Xen Server is based on CentOS, and it is fact that CentOS can be installed on an ISCSI target flawlessly, but I wanted to install Xen server on an ISCSI target I couldn't find a way. ...
0
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2answers
15 views

Linux (openSuSe) iSCSI Initiator: How to pass a CHAP user name and password?

I need to connect to iSCSI target with CHAP authorization. How to do this? I not found needed option in the iscsiadm. Do I need edit /etc/iscsid.conf or /etc/nodes/iqn.200-01..target/../default? With ...
0
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1answer
1k views

iSCSI enterprise target and client both on debian give invalid iniatorname error

I have two Debian Wheezy machines and am trying to set up storage for one of them on the other's disk using iSCSI (they do not have synchronized users, so NFS won't work for this application). I have ...
2
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3answers
109 views

KVM-Host lost connection to Storage

I would really appreciate some advice on how to fix this. I have a Debian KVM-Host with 9 Debian VMS running on it. The virtual machines are running on my little Storage via iSCSI. Now, my switch ...
5
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2answers
69 views

Hyper-V on 2012R2 HyperV Edition or 2008R2 Standard Edition?

We are currently running VMWare ESXi, with 1 Windows 2008 R2 Standard instance, 1 Windows 7 instance and 2 Linux instances. So, recently I wanted to upgrade my server, because there were a lot of ...
0
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1answer
21 views

How to configure iscsi targets so they are on dedicated ports?

I have two hosts. One is the iSCSI initiator. The other is the iSCSI target. They are both running Ubuntu 16.04 LTS and both are using open-iscsi. Specifically, the target host (let's call it "...
0
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1answer
121 views

What is better: iSCSI or NFS for mysql datadir mount? [closed]

There is database server with ip-address in external zone with mysql instances and nas-storage existing in internal zone. I need that database file is located in storage. I want write in my.cnf for ...
0
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1answer
3k views

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. ...
2
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2answers
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 ...
2
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2answers
840 views

Failover Cluster Quorum Failing

I have two nodes which boots from iscsi to implement windows 2008 cluster. And I'm using disk majority option as quorum over iscsi. But when the quorum's iscsi connection failed(May be san server ...
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0answers
20 views

LUN doesn't mount after reboot

After changing the size of a LUN (grow) on a RHEL 6 System, the LUN/LV (which is part of a Volume Group) does not mount after a reboot anymore. I have to execute vgchange -a y And after that i can ...
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1answer
1k 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 (...
0
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1answer
2k views

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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1answer
15 views

rsync to remote ssh or to local iscsi

I'm curious of anyone knows a link to or can elaborate upon this design question: I have a server that I would like to make a backup copy of data from. I have a second server that is iscsi-enabled. ...
1
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0answers
18 views

Appropriate clustered file system for SAN drive connected to two windows hosts [closed]

I am a SQL Server DBA and my questions is a sysadmin one...so please forgive me for being blunt in some terms or phrasing things weird. I am looking for a solution to connect a iSCSI SAN drive to two ...
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0answers
10 views

Received legacy SPC-2 RESERVE/RELEASE while active SPC-3 registrations exist, returning RESERVATION_CONFLICT

I have 2 iSCSI fileio backstores. I try to Determine whether shared disks can be used as tiebreaker disks . For that I run on the iSCSI initiator a tool from IBM to release the reservation: [root@...
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0answers
11 views

Fujtisu Eternus DX80 change iSCSI Discovery Reply Mode

I have a configuration mistake in my dx80 and the system is already in production. I have to set "iSCSI Discovery Reply Mode" at "Host Response" configuration to "All - Reply All Ports (Default)". Is ...
28
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4answers
26k views

Testing whether jumbo frames are actually working

Is there a command to test whether jumbo frames are actually working? i.e. some sort of "ping" that reports whether or not the packet was broken up along the way. I've an ESXi host with an Ubuntu VM ...
1
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0answers
47 views

How to enable space reclamation from KVM guest to ZFS zvol iSCSI target?

I have a ZFS volume "tank/kvm/webhosting", exposed through iSCSI (using tgt) to KVM guest. <disk type='block' device='disk'> <driver name='qemu' type='raw' cache='none' io='native' ...
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0answers
37 views

esxi vmware iscsi-datastore lost after power outage

I usually just try to find my own solution until it just works, this time not so much.. I have a ESXi cluster, with 2 hosts and 1x datastore cluster. Earlier today after a power outage, everything ...
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0answers
29 views

Same LUN trough FC and iSCI to different hosts

On my small vMware lab I'm presenting the same LUN to both ESXi hosts, one from FC and another from iSCSI. iSCSI finds the devices but doesn't mount the datastore. As I can see disks have different ...
4
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3answers
88 views

VMWARE Guest Storage VMDK vs RDM-V vs RMD-P

When is it best to use VMDK, RDM-V or RDM-P? I have always defaulted to using the standard VMFS5 Datastores with VMDK files for each server. However I typically use RDM-V when I need an excessive ...
8
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2answers
11k views

iSCSI drive doesn't mount after reboot of windows 2008 r2

I have a server with Win2008R2 and a synology NAS. On the Nas there are 6 iSCSI partitions which are mounted on the windows server. The windows server is virtualized under Hyper-V. After rebooting ...
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0answers
28 views

How to emulate or make multiple iSCSI software initiator IQNs on RHEL RedHat 7?

I have 2 Ethernet HBAs with 2 ports each, all 4 ports are connected to iSCSI targets and I can login using iscsiadm command. But the iSCSI initiator name (IQN) for all 4 ports is one, in /etc/iscsi/...
1
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1answer
40 views

iSCSI Windows Cluster share target or target per node

I have a lab environment where I have a Synology NAS that provides iSCSI targets which are used by Windows 2012 R2 VM's running on virtual box. I want to setup a Windows Failover Cluster and in order ...
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0answers
26 views

iSCSI Disk Usage on Initiator Does Not Match Target's Usage

I have a pair of Ubuntu 14.04 installs running within VirtualBox. I installed the IET target server (iscsitarget package) and have it properly serving up my selected LVM volume; this volume is ...
1
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1answer
266 views

open-iscsi initiator on linux does not see the passive side of an active/passive open-e target

I have a Linux server running SLES11 SP4 which uses open-iscsi and multipathing to connect to a LUN that is presented from an Open-E DSS v7 storage cluster with active/passive failover. The Linux ...
0
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1answer
28 views

Unable to disconnect iSCSI Target

I'm fairly new at this, please pardon my ignorance. I have a backup drive on a NAS that I need to disconnect from iSCSI in order to increase it's size. I've gone into Disk Management, made sure the ...
2
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0answers
16 views

How to stop iSCSI server?

Is it possible to stop listening on iSCSI server port 3260 without deleting the portal from the configuration? I tried to stop all services I know, but it's still running. [root@okvmh1 ~]# systemctl ...
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2answers
6k views

remount a iSCSI datastore in ESXI host after network faillure

I run ESXI 5.1 and all my virtual machines are in a NAS mapped by iSCI datastore. My router broke and obviously all the vm's where cut from their disks. What I understand is that when such event ...
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0answers
29 views

XenServer 6.5 Zeroed Performance Metrics for IOPS

In one of my XenServer 6.5 pools, I'm adding some graphs in XenCenter to measure my iSCSI storage IOPS and throughput performance and I'm getting no response. The graph is actually responsive, but ...
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0answers
52 views

iSCSI Virtual Disk Missing

I have one Supermicro server with Windows Server 2012 used as NAS with RAID1 which crashed and after reboot half or the disk has gone either failed or missing, I did manage to get all of them fixed ...
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0answers
51 views

ISCSI Targetcli backstores fileio attach an existing image file

I can't seem to find an answer to this simple question. How do I attach an existing raw image file as an iSCSI backstore target using targetcli? I am using CentoOS 7. In targetcli I can get into /...
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0answers
29 views

Can't access drobo Pro via iscsi on new subnet

We have a Drobo Pro on our subnet which works fine via iscsi, however I am in the process of moving the servers over to a new subnet. I can access the Drobo with DroboDashboard via USB on my Mac and ...
1
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1answer
1k 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 ...
2
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1answer
53 views

Active/Active MultiPathIO to two HP d2700s?

Our XenServer 6.5 hosts connect over ethernet to shared SAS storage via a single Linux based HP DL360 G6 "bridge". This single StorageServer bridges ethernet to SAS and shares out via an iSCSI daemon....
0
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2answers
46 views

LENOVO PX12-450R RAID configuration + general advice

I have a Lenovo PX12-450R NAS device with eight 3TB 7.2rpm drives. The device has a Quad-Core 2.5GHz Xeon CPU + 8GB DDR3 RAM. I have 4 gigabit NICS bonded. I am looking to use it to be a target for my ...
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1answer
31 views

ISCSI, MPIO and Target-IPs

Today I played around with ISCSI, MPIO and performed some tests. Some went as expected, someothers delivered results I cannot explain. The Test-Environment was 2 virtual machines, named A and B. ...
2
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4answers
7k views

5400 RPM vs. 7200 RPM 2.5" Drives in RAID - Any Real Difference?

Suppose you setup 8 drives in a RAID 10 configuration using 2.5" drives using 500GB capacity each (total 2TB with RAID10 config 1TB useable). The controller (assume a typical 3ware SATA controller) ...
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0answers
19 views

Sharing iSCSI from one NIC to another on same machine

I have a Windows 2008 system with 2 NICs. One NIC is connected directly to an NAS (NIC1), and the other NIC is connected to the general network (NIC2). I am trying to share a iSCSI connection from the ...
0
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1answer
67 views

Mounting 40 iSCSI HP 3PAR SAN volumes in single CentOS7 server

I need to mount 40 HP 3PAR SAN volumes iSCSI LUN/target in single CentOS7 server that run nginx, each volume size is 8 TB, and that 40 mount points need to appear as single share path. Does such ...
4
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2answers
5k views

Shared access to iSCSI target

Does anyone know how shared access (multiple Initiators) to a single iSCSI target is supposed to work. I have got it semi-working with Linux (CentOS-7) target and Win 2012 server / Win Hyper-V 2012 ...
0
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0answers
87 views

Unable to view LUNs exported on Linux via fibre switch brocade from IBM San Storage

I have problem mapping LUNs to my linux box from IBM San Storage Configuration: Host: Debian wheezy Host: Fibre controller QLogic 4Gb dual port DS4700 San Storage using Storage manager 10 brocade ...
2
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2answers
54 views

Is a switch is an iSCSI “mode” required for iSCSI targets?

If I have a switch, nothing special set up, just regular traffic, no jumbo frames, no special iSCSI set up, can I still have iSCSI traffic, say from a Windows machine using the iSCSI initiator and a ...
2
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0answers
29 views

EMC NS-480 Celerra - Way to verify which iSCSI initiators are currently connected to a LUN?

In the NS-480 or a given Celerra NAS, is there a way to verify which iSCSI initiators are actually CURRENTLY CONNECTED to a given LUN? I can see how to look at the LUN MASKs in Unisphere and see ...
0
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0answers
52 views

wbadmin discardes complete backup history after dynamically resizing virtual **source** volume

A customer SBS2011 (Windows Server 2008 R2) is incrementally backuped using wbadmin. The system ist hosted on a VMware ESX 5. We dynamically increased the size of one of the volumes which is backed up....
1
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1answer
2k views

Win2K8 Server MPIO iSCSI failover not working

I have a desire to pass iSCSI traffic between my Windows 2K8 Server lab system and my NetApp filer across two separate network stacks*. My configuration is as follows: one Win2K8 server with the ...
0
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1answer
58 views

RHEL: iscsiadm is not able to login in any port except 3260

Discovery is successful: [root@ncdqd0110 iqn.11351.com.xxx:AAA]# iscsiadm -m discoverydb -t sendtargets -p 127.0.0.1:54541 --discover 127.0.0.1:54541,-1 iqn.2495.com.xxx:AAA Login is failing: [...
0
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2answers
169 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.?
0
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1answer
80 views

iSCSI opcode[89], error(-65539)

I have error iSCSI target (Synology DS1813+) used as NAS: Jan 19 12:03:55 SRV1 kernel: [23311947.266497] iSCSI: iSCSI: EPIO[/volume1/@iSCSITrg/iSCSI_3_Extent_LUN-LUN1_000], opcode[89], error(-...