Questions tagged [open-iscsi]

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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 ...
3
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0answers
144 views

Debian Buster: How to start ZFS after open-iscsi in systemd

I have Debian 10 (Buster) installed and have added ZFS from Backports. I have 4 iSCSI-LUNs that I use as disks for ZFS. Each LUN holds a separate zpool. So far the ZFS setup works. But the system is ...
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0answers
45 views

How to add addtional ISCSI IQN in Xen Server

Current Problem : I have Xen servers running with Nexenta ISCSI storages and their IQN names are not according to standards and now we have added HP 3PAR storage cluster with ISCSI and HP ISCSI doesn'...
2
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1answer
2k 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 ...
9
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3answers
282 views

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 (...
2
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1answer
43 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
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0answers
418 views

iSCSI initiator APIs

Situation: Writing an automatic file sorter to search for files in iSCSI connected disks. My program will be sitting on a client machine (iSCSI initiator), connected to a server (iSCSI target). ...
1
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0answers
82 views

Synology iSCSI not mounting after repair

We have a Synology NAS device which provides iSCSI services to a large disk array. We had a couple of drives replaced and it took long for the "Repairing..." to finish and now our Ubuntu 10.04.4 LTS ...
1
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1answer
54 views

iscsi add a new storage machine to the san network and configure as one large disk

I have looked around so much but still couldn't find a practical working answer/example about adding a new storage machine to the iscsi san network and instead increase storage capacity. What I have ...
0
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3answers
4k views

CentOS7 Targetcli Configuration lost after server reboot

Targetcli configuration got lost after server was rebooted, i tried to restore configuration from backup files with targetcli restoreconfig <backupFile> configuration is not restored output ...
0
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1answer
792 views

How to add LVM logical volume data domain with iSCSI as storage type on oVirt?

I am trying to add a storage domain on oVirt with iSCSI as storage type, first i need to know whether i am doing this correctly.My understanding is there must be a storage server (target) and ...
2
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1answer
482 views

low network performance between Citrix XenServer and Linux iSCSI storage

I have two SuperMicro servers directly connected (no switch) by two 10 GBit Intel X540-T2 NIC. One server runs Citrix XenServer 6.2, the other runs Debian 7. I then installed open-iscsi and ...
3
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2answers
924 views

Mounting iSCSI targets from 2 different iSCSI target servers on Ubuntu

I have two iSCSI target servers. The iSCSI Initiator is an Ubuntu host (Ubuntu 14.04). I am using Ubuntu's open-iscsi to mount the iSCSI targets from both iSCSI targets servers to my Initiator. The ...
0
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1answer
299 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
797 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: [...
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0answers
173 views

ietd - spamming logs ietd: unable to connect (Connection refused) 2

I have a fileserver (debian wheezy, 3.2.0-4-amd64 #1 SMP Debian 3.2.60-1+deb7u3 x86_64 GNU/Linux) set up with open-iscsi, o2cb, ocfs2. 3 connected clients and the fileserver itself are working great, ...
0
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1answer
191 views

Can I Migrate An iSCSI Initiator Name To Another Server?

I am working on upgrading a virtual appliance in a datacenter and the upgrade process is a drop-in replacement of an update VM, but also a different disto (Debian -> CentOS). I am stuck waiting on an ...
1
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1answer
2k views

Log in to a single LUN of a target with iscsiadm (open-iscsi)?

Is it possible to connect to only a single LUN of an iscsi target when using iscsiadm? I have a target like "iqn.0000-00.iscsi.foo:bar" this target has 1000 LUN's. If I do iscsiadm -m node -l -T iqn....
2
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1answer
929 views

Correctly mounting SAN volumes at boot time

I have a system running Debian Wheezy (7.8) that connects to a storage volume exported via iSCSI using the open-iscsi (version 2.0) software initiator. The iSCSI initiator correctly reconnects the ...
1
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0answers
642 views

VMWare ESXi and iSCSI via FreeNAS

I've recently been setting up a sandbox ESXi environment with a VM running FreeNAS providing a volume which is connected as a datastore on the host via iSCSI. I've created a VM on this datastore and ...
2
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2answers
841 views

iSCSI to NetApp FAS: high latency for write load

Problem A Linux iSCSI initiator is seeing high service times when writing to a NetApp FAS target exposing a bunch of LUNs. Where to look for the cause and how to resolve this? Reproduction I am ...
10
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1answer
5k views

Poor iSCSI performance with SSD disks and 10 Gbe network

iSCSI Target Ubuntu 14.04 (Trusty Tahr) with 16 GB RAM and 16 core CPU as LVM backed iSCSI target using three Samsung SSD disks, each capable of doing 65k IOPS using an LSI 6 Gbit/s ...
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1answer
507 views

MySQL on iscsi drive CentOS7 wont start on boot

I configured Mariadb on CentOS 7 to run on iscsi drive mounted on /mnt/iscsi, but it wont start on boot with following error (it can be started manually): mariadb.service - MariaDB database server ...
2
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1answer
3k 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 ...
0
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1answer
323 views

Live migration: is it possible to store image disks on a single iscsi target?

From redhat documentation: A guest virtual machine installed on shared storage using one of the following protocols: Fibre Channel-based LUNs iSCSI FCoE NFS SCSI RDMA protocols (SCSI RCP): the ...
1
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1answer
2k views

VM iscsi disk crashes on one VM Host, not on the other

I have a VmWare solution running on a HP bladesystem with a Lefthand ISCSI san. There are currently two VmWare hosts in that environment. I have two Debian VM's sharing an ISCSI disk (with ocfs2), ...
0
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1answer
914 views

Cannot see available disk space in LVM

I have iSCSI disks connected to my server. i want to resize their capacity. It has LVM on the disk. when i resize the disk in equallogic SAN, i gave it 700GB. and when it check its disk space by fdisk ...
1
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1answer
2k views

iscsi concurrent access / iscsi volume shared access on NAS

I having a 7-bay NAS box with Raid-5 (5.3TB usable) with netgear gigabit Ethernet switch to connect the hosts (3 windows7 machine Specs: i7 / 16GB RAM / 1TB HDD / gigabit Ethernet NIC). (All of the ...
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1answer
2k views

how to configure ISCSI fault tolerance in ubuntu 12.04 [closed]

how to configure ISCSI fault tolerance in ubuntu 12.04 Anyone has a tutorial or steps to?! thanks in advance knowing that initiator and server are ubuntu
3
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1answer
8k views

CentOS Client - Unable to Establish iSCSI connection with multiple interfaces on the initiator

So after upgrading to CentOS 6.2, I am seemingly no longer able to login into my iSCSI targets. I have multiple interfaces on different subnets on the system, and I first thought that it had to do ...