Questions tagged [iscsi]

iSCSI - SCSI over IP - mount disks across the network

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Proxmox iSCSI Boot?

Does anyone know how to install Proxmox over iSCSI so that it can be booted over the network? My current solution is to use USB flash drives, but would like a different solution. Thanks!
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Is it safe to “Enable-MSDSMAutomaticClaim -BusType iSCSI” in an environment with multiple iSCSI-Targets?

I'm currently setting up a backup storage cluster (Acronis ACI) where I want to attach an iSCSI target to a Hyper-V host. The manual states to enable MPIO, which is fine. The next step is to enable ...
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Openstack TripleO overcloud deployment failing with apparent iSCSI failure

I'm failing to deploy an overcloud on 4 nodes using a TripleO undercloud instance. The journals on the overcloud nodes are inconclusive. [root@director deploy]# grep -E '(overcloud-controller-2.*(...
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Bind different iscsi nodes on different IP address

I've tried searching for this but I'm not sure if I'm wording it right. I have a single physical server I want to use as iSCSI target. I have two volume groups but I want each volume group to only be ...
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State of OCFS2 as KVM storage for QCOW2 format

Using a shared iSCSI SAN all SSD and good cluster aware filesystems are few and far between with Linux. What is the state of OCFS2 with modern Linux kernels and is it considered reliable enough to ...
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How do you set the SWP flag for iscsi on linux?

I want to export an iSCSI share read-only; I understand that's done with SWP, but... I can't figure out how to set that on a LUN. I've tried via config file and via command line... Example: <...
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Virtual iSCSI linux — share as ISCSI ExFat, but have it go to XFS?

I'm building a RAID system based on a dell server with 18 drive bays; I want to use as JBOD and manage with LVM2/MDADM and use XFS as the base filesystem. However... I have a few bits of PC software ...
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Need confirmation on how iSCSI RAID storage works

I have a Dell PowerEdge server with Windows Server 2019 that has an iSCSI target set up with 30 iSCSI LUNs. The HDDs are set up in a RAID-6. I have some IP cameras that have the ability to record ...
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31 views

Linux server wont shutdown - A start job is running for Login iSCSI Target

I am settin up a server with draut and iSCSI - I messed up a target / IP mapping, and now my server is stuck while booting: A start job is running for Login iSCSI Target ... (23min 10s / no limit) I ...
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Unoptimize taking weeks

We have ReFS on a iSCSI NAS drive. We found that there are corrupted files. We found an article saying we could unoptimize it and that might stop the corruption. We started this process before ...
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1answer
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LinuxIO (LIO) target @ Debian 10 and VMware 6.7 Initiator: Detected WRITE_PROTECTED LUN Access for 0x00000000

we are running QNAP NAS Debian 10 Host VMware 6.7U3 Hypervisor a) Exporting an iSCSI-LUN-target with the QNAP, what ist using LIO therfor, and accessing it from VMware (read/write) works fine. b) ...
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In running iSCSI, Disk I/O get worse when default gateway is connected

The server has been running iSCSI service for the diskless client, and I have noticed that the connection of server's gateway(internet connection or a fake gateway) made iSCSI performance worse. Is ...
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Make data on file server (RAID1) still accessible on hardware failure

There is a file server (Windows Server 2008 R2) running on a hardware RAID 1 (HP SmartArray P212 with Read and Write Cache) with 2 standby disks. Additional, there is a Windows Backup writing to an ...
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Mounting iSCSI LUNs to kubernetes pods - single target, multiple LUNs

I have a single iSCSI target with 3 LUNs. Accordingly, I have three different apps I want to deploy to k8s, each connected to its own LUN. The problem is that I can't seem to run more than one of ...
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Dedicated iSCSI targets and shared IP addresses

There is a requirement in the documentation to have a dedicated iSCSI target for the management data domain on oVIRT (and OLVM - which is essentially a rebranded oVIRT) https://www.ovirt.org/...
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SFP+ iSCSI Optic Transceiver: Dell VS Other

Out of curiosity, does anyone have any experience with Dell iSCSI SAN connected with SPF+ transceivers? My question is about what makes this: https://www.dell.com/en-us/work/shop/10gb-iscsi-sfp-...
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RHEL 7.8 (STIG'd (Locked-Down Image)) targetd faux-iSCSI front-end for Initiators — Can't log in with CHAP from RHEL 7.8 Initiator

Here's my scenario: Target: RHEL 7.8 (security lockdowns) using targetd/targetcli to configure /dev/sdb (100GB) presented as a block device and created as LUN0 Target(new): RHEL 7.8 (NO SECURITY ...
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dracut iscsi netroot - not mounting additional disks

Using iSCSI disks on one of my nodes, I am using dracut to initiate the connection to the root volume; the root disk works as expected, the issue I am having is that my second disk connects, then ...
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205 views

Windows iSCSI client logs error in the event log but then connects after a a long wait

I have an iSCSI target available on a Synology box. When connecting to it from a machine running Windows Server 2016, I receive this error in the event logs. Initiator failed to connect to the ...
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1answer
195 views

Cannot activate Logical Volume which was managed by Pacemaker

I have two CentOS 7 servers that clustered with Corosync and Pacemaker to work in Active/Passive way. The whole idea was to move the mount point in case of a problem emerges in the active node. My ...
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1answer
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Windows Server 2003R2: automatically attaching an iSCSI disk at each startup and setting network shares?

I have a Windows 2003R2 Server soon to be replaced. The server was just connected via iSCSI to a WD MyCloud 4100 NAS, using the Microsoft iSCSI initiator. A large number of directories exists on this ...
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1answer
572 views

Windows Server 2019 iScsi MPIO multiple targets

I'm looking to setup a Windows Server 2019 failover cluster with iScsi shared storage (for a SQL Server Always-On instance). The additional requirement is to not have a single point of failure. Let's ...
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813 views

Best free software solution for homemade iSCSI SAN [closed]

I currently have a NAS running ZFS on Ubuntu but have recently changed my main windows software to pool local drives using Stablebit DrivePool. I cannot include networked drives in DrivePool unless ...
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1answer
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Ubuntu iSCSI partition is not visible in lsblk

Recently I have created iSCSI Target with /dev/sda1 partition (1Gb with ext4 filesystem created), and iSCSI Initiator. Every service works correct without visible errors. Initiator successfully logged ...
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OCFS2 Adding nodes

i have vms that run nginx and php fpm on separate machines, for now i use a very stupid method of synchronizing directories by hand since cluster is not that big. However i have another server laying ...
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989 views

Is SMB safer than iSCSI for connection to a NAS?

Recently one of our customers undertook an IT network audit from another (third party) IT audit firm. The results were generally good, although they pointed out that we had used iSCSI client on ...
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1answer
153 views

Freenas is slow - network @ 400MB/sec, disk @ 150MB/sec

I have a 16 core virtualization FreeNAS 11.3-U4.1 instance running on Hyper-V with 32GB of RAM with a 18TB iscsi target on DELL T630 server grade hardware. HDD are on IT mode from the RAID card, so ...
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Prevent LVM from activating all LVs upon connecting SAN storage?

We have a cluster of Proxmox VE servers with shared SAN storage. The storage server provides a big LUN through iSCSI. We use iscsiadm on the PVE hosts to load the storage. Per our workload, we setup ...
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How to properly connect to AWS LUN storage?

Recently I configured my LUN storage on the AWS, allowed TCP and UDP connections from my PC, made a port (3260 for iSCSI) forward rule to my local VM, allowed iSCSI firewall rules on both machines but ...
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How to properly setup VMs for testing (personal test) [closed]

So both of my testing VMs are on the same laptop and both of them are running Windows Server 2019 and both of them are on the same SSD. Basically, I need to test performance when the SQL database is ...
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3answers
486 views

“Bad message” with a new SAN using multipath and iSCSI

I'm configuring a new SAN for a set of Ubuntu 18.04-based servers. Each of nodes can mount the ext4 formatted partition fine. Being new to both multipath and iSCSI, I'm not sure if what I'm seeing is ...
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BTRFS Multiple Initiator Access

Can't seem to find this noted anywhere. Is BTRFS capable of being accessed over iSCSI by two hosts at once? (Think how esxi hosts access same datastores)
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Unable to write/mount disks with iscsi reservation and multipathd. Using Pacemaker and iscsi fence agent

I have two iscsi target servers in a pacemaker cluster connected to a Dell MD1200, I can get the scsi reservations recorded with the multipath.conf key configured in each server, but I can't write to ...
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Ipxe sanboot: Boot ubuntu legacy bios disk

I have installed ubuntu-16 on 2 ISCSI disks, one with legacy bios and one with UEFI(I did this with QEMU). I want to boot these disks through IPXE on my openstack cluster I am able to boot ubuntu 16 ...
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VMWare ESXi 6.x: “Clustered” vs. “Local” storage

I'm reviewing a CSV dump of a vCenter Essentials configuration and under the storage column, I see: Device Type is "Local" and the Vendor is "Synology" with the Model as "iSCSI Storage". Presumably ...
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iPXE sanboot starts slowly with “ Did not receive response to NOPIN on CID”

Environment: - CentOS 7 with kernel 3.10.0-1062.18.1.el7.x86_64 - targetcli version 2.1.fb49 - isc-dhcpd-4.2.5 - iPXE version 1.20.1+ and 1.0.0+ I have a CentOS 7 server which can serve Window ...
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1answer
473 views

ISCSI and Windows Server 2019

I have 2 servers Main one is acting server the other one is providing HDD as ISCSI to main server. Purpose of this setup is Media Streaming sometimes there is transcoding involved. In application I ...
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1answer
4k views

Linux goes to swap while plenty of RAM installed

I have a linux box that is used as SAN storage. It is equipped with 14 SATA HDDs and the only software it run is iscsi target and zabbix agent. This is physical box, not VM. The RAM size installed is ...
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Mixed ocfs2 clusters: direct access and iscsi

Good morning, I have this configuration: diagram of configuration One "shared disk" with one partition formatted as OCFS2 Host A and host B with direct access to the "shared disk" Host C with direct ...
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iscsiadm deletes configured CHAP credentials; how to prevent this?

I have a home lab set up with libvirtd and iSCSI. I have most issues worked out/around but there's one issue that still puzzles me. I can't find an answer on Google or serverfault.com. Often when ...
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1answer
438 views

Booting a SuperMicro from virtual iSCSI CD-ROM

I correctly set up the iSCSI server with SCST, I can login to the target via iscsiadm and mount the iSCSI resource, a CDROM based on ISO image exposed as LUN 0. When I try to boot a SuperMicro X10DRi-...
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1answer
64 views

vCenter moving VM from ISCSI target to different ISCSI target

In my server lab, I am running a vCenter cluster with 2 ISCSI targets. Both of these are directly connected to switch using SFP+ port. I assume, when I do such a process as cloning a VM from one ...
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297 views

Unable to mount iSCSI shared Datastore on VMware ESXi

I had an iSCSI Datastore mounted and now am unable to remount it. There are 2 shares one of which is new and I want to copy the data from the old to the new. I have created a new datastore with the ...
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1answer
1k views

mount vmfs partition in esxi

I lost connection to an iSCSI disk, and after reconnecting the datastore has not mounted. I can see the VMFS partition, but I'm not sure how to mount it manually. The UI options don't seem to offer an ...
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CentOS can't boot because of iSCSIconnection not established

I have a CentOS 6.5 with a iSCSI disk connected. This disk is mounted as partition. Everything is working fine but after I tried to reboot, the system won't boot. It can't mount the partition /dev/...
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I'm not be able to add LVM partition in iSCSI shared storage

Hey guys currently I'm using proxmox 6.1 and i have created a cluster for high availability. I have one shared iSCSI storage from NetAPP, i want to create a LVM on that iSCSI storage but its asking ...
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1answer
81 views

DAS with MD3420 or iSCSI with MD3820i

Would there be a significant difference between these 2 setups? 2 esxi hosts connected MD3420 via SAS cables and HBA 2 esxi hosts connected to MD3820i via CAT6 cables without switch. How much ...
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I'm getting error during HA configuration for KVM on CentOS

After adding all nodes and resource agents in my cluster I'm getting this error please someone suggest me something. Please take a look in the image-
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HA configuration for KVM Guest on iSCSI shared storage [duplicate]

My requirement is to provide HA to a Zimbra Server. We want Zimbra files to be installed in a Netapp SAN which is providing around 5.7 TB as a SAN iSCI Drive. Since Netapp comes in with Dual ...
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1answer
430 views

HA configuration for KVM machines installed on shared iSCSI storage

My requirement is to provide HA to a Zimbra Server. We want Zimbra files to be installed in a Netapp SAN which is providing around 5.7 TB as a SAN iSCI Drive. Since Netapp comes in with Dual ...

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