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Questions tagged [iscsi]

iSCSI - SCSI over IP - mount disks across the network

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VMware vSphere 7.0 U3 + TrueNAS Core 13.0: can't create VMFS6 datastore from TrueNAS iSCSI disk. Why?

I have a bare metal server running vSphere/ESXi 7.0 U3d, and a bare metal NAS running TrueNAS Core 13.0. The NAS has a single pool shared via iSCSI; the pool is running all defaults (lz4 compression+...
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Setting up OCFS2 on RockyLinux

anyone has experienced OCFS2 fs on RockyLinux 8.5? I'm searching a solution to sharing a single iscsi LUN between multiples server, but I didn't find any useful info. I read about GFS2, but appears to ...
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iscsid broken mount after recovery

I am playing with Open-iSCSI and came across some troubles. When the network link between my initiator and the target fails, iscsid will recover the connection, which is good. But my mount is broken ...
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Determining Required LUN Level Uniqueness

I have primarily used NFS for most of my storage needs but I find my self setting up some iSCSI targets today and had what is likely a super basic question. When I create an export for an iSCSI target,...
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123 views

Use NFS to export an ISCSI drive. Any potential issues with this setup?

I have a storage system that is broken for file storage. The block storage components still work and I am able to create a pool/lun and attach to a linux host. I created a multi-TB LUN and have it ...
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Robocopy of folder redirection folders caused the volume to fill from ~1.5TB to the full 14T, as a result I cannot access the volume anymore

I'd appreciate some help resolving this issue. I was using robocopy to copy the contents from one iSCSI volume to another - moving folder redirection contents from the old to the new location. There ...
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4 votes
2 answers
95 views

max iSCSI initiator session

what is iSCSI initiator session limit ? and is there anyway to exceed this limit ? i'm working on windows server also in this documentation https://docs.microsoft.com/en-us/windows-server/storage/...
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Maximum number of iscsi connections

Is there a way to increase the maximum number of iscsi connections on windows to avoid this error? Connect-IscsiTarget : Exceeded max sessions for this initiator.
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132 views

cannot mount iSCSI datastore on ESX 7.0u2

Cannot mount iSCSI datastore on ESX 7.0u2: after an unexpected reboot, for quite some time iSCSI target was inaccessible (deconfigured on a iSCSI server). datastore is easily mountable on neighbor ...
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iSCSI separation from Ethernet via VLAN

I've set up a small cluster of a few servers along with a SAN. The servers are running Ubuntu 20.04 LTS. Using instructions provided by the vendor (I can't find where I read it before), they ...
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2 votes
1 answer
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Proxmox VE: add a LVM storage on top of iSCSI: how to find "base" value for pvesm

I'm using Proxmox VE platform, version 6 or 7, and I'm currently documenting the initial setup with the idea of automating it later. So I'm looking for all command line commands to do all that I must ...
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ext4 errors with dm-crypt / LUKS on top of an iSCSI device

I have two oldish "NAS" devices, specifically Buffalo TeraStation Rackmount iSCSI ("TS-RIXL/R5"). Those are basically embedded computers running Linux with four SATA slots and two ...
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qemu (KVM) how to set iscsi timeout on?

I have opensuse 15.2 Leap on all systems qemu 4.2.1 # /usr/bin/qemu-system-x86_64 --version QEMU emulator version 4.2.1 (openSUSE Leap 15.2) Copyright (c) 2003-2019 Fabrice Bellard and the QEMU ...
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How to get iSCSI multipath work on Windows 10 , should I do any adjustment in linux server side?

I have 8x18TB Raid10 mdadm volume on Ubuntu server. When I connect from Windows iSCSI speeds 220MB/sec read 375MB/sec write. I guess it is a iSCSI protocol bottleneck could not improve it. It leaves ...
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1 answer
150 views

Boot diskless client from iscsi target

I have a Ubuntu server 20.04 setup to run the service as an iscsi target. I've accessed and mounted the target from a client (running Debian) and installed a Debian on the mounted block/device. Making ...
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2 votes
1 answer
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Attach network disk as direct

Is where way to attach network disk as direct without creating VHD etc? I want to connect drive directly from one computer to other by network by like iSCSI but without creating VHD. Not acceptable: ...
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1 answer
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Single host connecting to two iSCSI targets - Linux

I have one node set as initiator and two separate targets, each one on a different node. How do I connect to the second target on node? I'm trying to figure out how it should be done. My initiator ...
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0 votes
1 answer
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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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1 vote
1 answer
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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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1 vote
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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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2 answers
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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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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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1 vote
1 answer
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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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1 answer
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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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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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1 vote
0 answers
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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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1 vote
1 answer
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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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-2 votes
1 answer
51 views

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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5 votes
1 answer
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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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2 answers
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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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6 votes
1 answer
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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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1 vote
2 answers
105 views

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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7 votes
3 answers
2k 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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2 votes
1 answer
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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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1 vote
0 answers
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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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1 vote
0 answers
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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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3 votes
2 answers
46 views

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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5 votes
3 answers
532 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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1 answer
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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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1 vote
0 answers
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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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2 votes
0 answers
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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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5 votes
1 answer
902 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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14 votes
1 answer
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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0 votes
1 answer
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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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1 vote
0 answers
152 views

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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3 votes
1 answer
562 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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