Questions tagged [iscsi]
iSCSI - SCSI over IP - mount disks across the network
852
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FreeBSD - Is it possible to create a clone of a snapshot in a different disk for improved performance?
I am a new to FreeBSD and want to make a virtual disk service via iSCSI.
I create snapshots of a dataset on the same disks, however I would like to create clones on a different disk like a nvme disk ...
0
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0
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23
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initiatorname.iscsi is overwritten
I use RHEL 8.8 on my machines.
I run the following command:
echo InitiatorName=$(/sbin/iscsi-iname) > /etc/iscsi/initiatorname.iscsi
It sets correctly the name. But after some time file is set to ...
1
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0
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51
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Multi-node OpenStack with iSCSI storage
I’m trying to deploy a multi-node OpenStack environment using Kolla, Ansible, and Ubuntu server. I successfully added a partition to my Cinder storage using iSCSI. But I can't configure OpenStack to ...
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18
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Distributed file system network booted hosts
Having task to utilize old servers as a backup distributed file system like MooseFS I see a collision in whole concept:
DFS is fault-tolerant and keep track of HDD status by itself, so any file system ...
- 508
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1
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165
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How to use targetcli to disable iSCSI write cache
I have exported a single disk as an iSCSI target using targetcli on a Linux host. On a remote machine I have connected to the device, and placed a ZFS volume on it (as a replication target with zrepl)...
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165
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Non-valid paths in "multipath -ll" output
I see paths that are no longer valid along with valid ones. How do I prevent them showing up in the output. I expect four valid paths.
The volume was earlier exported with LUN 13 and later 14 which ...
- 101
1
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1
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56
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iSCSI shared disks with custom device name on clients
I'm using RHEL 7.9 (Maipo) and need to setup for all iSCSI clients the same device name, like /dev/sdb or /dev/thiscustomname.
I could do that by sharing the source disk using multipath, but for Db2 ...
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809
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Steps to succesfully persistent iSCSI LUN using Open-iSCSI on Ubuntu Server?
Using Ubuntu Linux Server 22.04 minimal edition without GUI, I need some help in mounting the iSCSI LUN using Open-iSCSI so it is mapped to /dev/sdb with the below command:
Could you please let me ...
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3
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310
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Linux iSCSI Target MCS
I have a Linux Server hosting an iSCSI target.
The iSCSI Initiator is a Windows 10 Desktop
When connecting with the Windows 10 Machine im unable to start MCS. (Too many connections)
Windows also shows ...
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0
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1
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126
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Can't connect to other volumes (Dell Equal Logic SAN Headquarters)
Investigating an older server and disk array (Dell EqualLogic PS4100). The server has Dell EqualLogic SAN Headquarters onit. In Group Manager on the server I can see 5 out of 7 volumes as online/...
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1
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477
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Intel® iSCSI Remote Boot Intel X540-T2
I have an Intel X540-T2 Dual port 10GB Ethernet adapter. DEV ID: 8086/1528
I am trying to setup a workstation to boot from a SAN using iSCSI.
Everything I have read about this card says that Intel® ...
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1
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2
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216
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RHEL 8 extend iSCSI LUN without reboot
In short: I´m building computer systems with mounted iSCSI storage. Is it possible to extend the iSCSI storage in live operating without rebooting the systems?
Details:
One LUN is planned with 5 TB ...
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-1
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1
answer
914
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disk cache mode: "write back" vs "write through" in iscsi context
I have a few iscsi drives connected to a debian. The iscsi drive (sde,sdg, one for each path) and the multipath device (dm-25) have the "write_cache" property (/sys/devices/virtual/block/dm-...
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1
answer
56
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Recommended IP ranges for Dev SAN with 2 x switches
I am setting up a small Dev environment with 5 hosts, 2 ubiquity switches and a qnap NAS. One switch for the normal TCP traffic and one for iSCSI. I was wondering the recommendation for management ...
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2
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100
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Why are workstations trying to access file server port 445 on the isolated iSCSI subnet?
I have iSCSI set up on an isolated set of switches in MPIO config. The file server VM uses all 4 ports on the host. 2 for iSCSI MPIO each plugged into a physically isolated switch that only has the ...
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2
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1
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506
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iSCSI Discovery Issue
I have an issue with iSCSI discovery. Just some background, I'm using Openstack Cinder and part of Cinder requires the use of iSCSI for networked drives. Cinder is unable to get the list of nodes ...
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1
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198
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write back cache on network scsi disks
I have a machine in the cloud which has a persistent disk. For the host, it appears as a SCSI disk. I see the following seting:
$ cat /sys/block/sda/device/scsi_disk/0\:0\:1\:0/cache_type
write back
...
- 305
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0
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31
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Proware SB-2124-G1A3 password reset
We have been using the Proware SB-2124-G1A3 device for more than 10 years. But now we have discovered that the administrator password is irretrievably lost. The official documentation describes ...
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openstack nova have a long startup after the fast created volume
i have reinstalled OpenStack with the newest version (Yoga) and all base modules. The system is running fine but the time between the creation of the volume and the startup ist very long with ~10 ...
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1
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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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1
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586
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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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137
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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 ...
5
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2
answers
423
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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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1
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1
answer
655
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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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1
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592
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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 ...
- 167
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1
answer
5k
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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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1
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356
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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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0
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267
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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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0
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1k
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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
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280
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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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4
votes
1
answer
350
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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
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1
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513
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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 ...
0
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1
answer
308
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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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73
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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
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1
answer
709
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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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0
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185
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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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1
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54
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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:
<...
- 5
0
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2
answers
714
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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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1
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433
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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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0
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0
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904
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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
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1
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413
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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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0
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63
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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
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53
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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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89
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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
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0
answers
134
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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 ...
- 189
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1
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2k
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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 ...
-2
votes
1
answer
82
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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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votes
1
answer
1k
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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
3k
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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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