3
votes
1answer
56 views

Which iscsi target on linux for serving vSphere? [closed]

All such questions are a bit dated; I'm hoping things have changed in the past year. What do you guys use to serve a DRS cluster with vSphere 5.1/5.5? SCSI-3 persistent reservation support would be ...
1
vote
1answer
45 views

how to determine the iscsi target's naa in linux

I understand that iSCSI uses iqn / eui to identify target LUN. Once I have discovered the iSCSI target and logged in is there a way to determine the LUN's NAA id for the remote target from a linux ...
0
votes
0answers
22 views

iscsadm successful login but no block device is generated

i know, there is a similar article but the soluion there did not help. I'm using SLES 11 SP 2 with Kernel 3.0.13-0.27-default and i want to mount an iscsi Device from a Thecus NAS. I've using ...
4
votes
1answer
137 views

iSCSI TGTD over InfiniBand Performance

I have just configured a server-to-server 4x SDR InfiniBand link to increase bandwidth for the backend storage of my virtual machines, specifically a database server. I am using iSCSI with TGTD on ...
2
votes
2answers
87 views

iscsi slow read speed

we are currently experiencing very slow speeds when copying a huge file (35GB+), to our surprise it starts off at a very high transfer rate 300MB/s, then drops to 4MB/s after 10-20 seconds into the ...
0
votes
2answers
503 views

Basic iSCSI target setup on Proxmox VE (Debian 7) not working

I have created a Linux LVM partition on my disk and want to share it over network via iSCSI. However, the target is unreachable with iscsiadm (from both local and remote). The setup is shown below. ...
0
votes
0answers
77 views

read only file system

we have a Linux box (RH5) accessing a LUN on a NETAPP FAS2040 via iSCSI, for some reason the system remounts the LUNS(file systems) in read only mode, mostly when deleting huge chunks of data, ...
1
vote
1answer
247 views

cannot create zfs pool on iscsi multipath drives

I have a disk on iSCSI SAN, which i have mounted on my server through multipath. when i run the command to create zfs pool using zpool create -f zfs-data /dev/sdc or zpool create -f zfs-data ...
0
votes
0answers
89 views

Setting up iscsi and determining the scsi ID for multipath

Is there another way to determine the SCSI ID when trying to setup the friendly name in multipath.conf? I executed the command multipath –ll –v2 and didn’t see the new slice we had setup (after ...
1
vote
1answer
50 views

Mount a iscsi target volume natively

I have a LVM logic volumn exported though iscsi and formatted by the client to ext4. Now that machine serving the iscsi target went down and I'm wondering if I can just take the hard disk out to ...
5
votes
1answer
293 views

100% packets dropped on first RX queue on 3/5 raid6 iSCSI NAS devices using intel igb (resolved)

Edit : The issue is resolved. The Queues in question have been used for Flow Control Packets. Why the igb driver propagated FC packets up to have them dropped (and counted) is another question. But ...
0
votes
0answers
171 views

PXE Boot an ISO with iSCSI information

High Level: I'm using pxelinux.0 and memdisk to boot a Windows PE iso. I then connect to an iSCSI lun and apply a Windows WIM. More information: Normally netboot/i is used to automatically assign ...
-1
votes
1answer
152 views

tar operation taking extremely long time

Wonder if anyone can help with this issue, we running RHL 5 on HP Proliant DL580 G7 it has 2xCPU @1.87GHz 6XCORES each & 64GB RAM. lately backing up a directory (62GB) with tar (tar -czvf ...
1
vote
1answer
550 views

How do you get iSCSI multipath to discover new LUNs that have not been partitioned yet?

Oracle Linux 6.3 iscsi multipath shows LUNs with existing file system but not the raw block devices that have not been partitioned yet. When I run multipath -ll it will show a LUN that has previously ...
0
votes
0answers
43 views

Cannot login to ISCSI Target - hangs after sending login details

I have an ISCSI target volume, to which i am trying to connect using CentOS Linux server. Everything works fine, but cannot its stuck at login. Here are the steps i am performing: [root@neon ~]# ...
1
vote
2answers
333 views

Can't access to a iSCSI volume

I have a iSCSI target on a customer place I'm using from an old Fedora (Core6) server. I configured it and formatted as ext3 (mistake, now I know) and I've been working with it for some time. Now I ...
0
votes
1answer
316 views

iSCSI logout Input output error

203 hava a iSCSI target named poolA that I am trying to log into using this command: iscsiadm -m node -T poolA -p 192.168.0.203 -l I am trying to use it as a vg. Secondly, I create two lvs on this ...
0
votes
4answers
691 views

iSCSI timeouts under high load

I have two servers connected via Gigabit Ethernet. One is iSCSI target, the second one is initiator. When I run mkfs.ext4 at initiator, after a while disk IO slows down critically in target. In the ...
3
votes
1answer
438 views

Page allocation failures on iSCSI storage

We have a CentOS 6.3 iscsi server (16GB RAM) running on Infiniband bus (ipoib). When the load is high I can see multiple errors: Sep 3 23:22:20 stor4 kernel: tgtd: page allocation failure. ...
1
vote
1answer
892 views

Is it possible to create a multipath iSCSI target with two DRBD nodes?

I can put together two linux servers and use the (more or less) new DRBD dual-primary feature to get a shared block device with concurrent read/write access on the two nodes. Can I then export an ...
-1
votes
1answer
343 views

iSCSI filesystem creation on Linux - Best Practices - Large Volumes - Many Files?

We recently purchased HP Lefthand 4500 G2 24TB box and also a DL380 G7 server. I'm running Centos 6.2 (RHEL 6.2). The Lefthand box consist of 12 2TB HD's configured in RAID6. That gives me about ...
1
vote
1answer
197 views

How to set client-based ACL on iscsi target?

Say I have the following set up. <target iqn.2012-02.local.mydomain.server1.target1> backing-store /dev/virtstore/virtimage1 </target> <target ...
1
vote
1answer
741 views

Mounting an additional iSCSI volume in Centos without restarting the iscsi initiator

I don't know if I'm missing something but when I'm mounting additional iSCSI volumes to a said server to add additional storage to a server I'm not seeing a way to mount the volume after running a ...
-1
votes
1answer
2k views

Free SAN Storage Software for Linux [closed]

I'm looking for a free solution to build virtual disk targets accessible over SAN (iSCSI). Primary requirement for me is data deduplication support. After much search on the internet i came across ...
4
votes
2answers
4k views

How good is failover of the iSCSI target on a two-node linux san?

I'm evaluating the possibility to use two off the shelf servers to build a cheap iSCSI redundant SAN. The idea is to run linux, pacemaker, and an iSCSI target - something like the SAN Active-Passive ...
0
votes
2answers
110 views

Hide iSCSI targets in linux?

My SAN reports the same targets with multiple IP addresses. Is there a way to hide some of those IPs so I don't see the same targets multiple times?
5
votes
3answers
761 views

Linux NIC bonding on top of vlan interfaces?

Is it possible to set up bonding(active/backup) on top of existing vlan interfaces ? Assume the following scenario: Linux Server with 2 NICs connected to separate switches iSCSI initiator + MPIO to ...
3
votes
1answer
157 views

What happens if I pull the plug of an iSCSI device?

If I pull the network connector of an iSCSI device, what happens? Will the "client" automatically connect again if I plug it in again? Is there a timeout? (in my case I'm talking about a QNAP NAS ...
1
vote
0answers
470 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
votes
1answer
192 views

iSCSI target rebooting causes initiators to reboot as well

I'm running a couple of iSCSI Targets with OCFS2. I had to reboot my iSCSI Target (the physical iSCSI Target) due to some hardware changes and it caused all the initiators to reboot. I want to prevent ...
1
vote
1answer
540 views

How To Upgrade Network Driver To BNX2i

we have a server with a Broadcom NetExtreme II card which supports iSCSI offloading. According to the dell documentation, we need to be running the bnx2i driver to use the iSCSI offloading engine. We ...
1
vote
2answers
3k views

How can I install LIO “Linux iSCSI” on Ubuntu?

I am wanted to use LIO iscsi-target software on my Ubuntu server to host a target for my VMware box. The only issue is I cannot seem to find any kind of guide or steps to go about compiling a new ...
0
votes
2answers
649 views

Creating multiple ISCSI LUNs from one disk, under Linux

I have a 2.7 TB virtual disk (LSI MegaRAID controller with ten 600GB SAS drives configured in RAID10) under Linux. I am sharing this disk to a remote ESX host via ISCSI. Unfortunately ESX will only ...
1
vote
2answers
8k views

The Linux SCSI layer does not automatically remap LUN assignments

I've got some iSCSI/FC storage, currently using only iSCSI. I have in general no problems with mounting LUNs - under Linux and under Windows. Unfortunately - when I add LUN for my Linux iSCSI ...
2
votes
2answers
3k views

Specifying a preferred route when there are multiple links to same network

I have a server with multiple interfaces and IP addresses on the same network. I would like for non-iSCSI traffic to exclusively use one of the interfaces, and for iSCSI traffic to exclusively use the ...
1
vote
2answers
539 views

Is there a linux iSCSI target that supports a shared image for booting multiple thinclients?

I'm maintaining a diskless thinclient server hosted on Ubuntu. At the moment we're using an nbd/aufs solution for booting thinclients into linux but I have a new requirement to support Windows 7 ...
4
votes
3answers
1k views

How to de-duplicate data for OpenVZ/LXC on Linux?

I want to setup multiple similar containers and I want to have de-duplication. The only solution I'm thinking of is to use OpenSolaris ZFS and share zfs volume with NFSv4 ro iSCSI target and create ...
0
votes
3answers
864 views

Query iSCSI ID of a device node on Linux?

I have some iSCSI targets mounted on a linux host as /dev/sd*. How can I query the iSCSI ID from the device node? This is on CentOS 5, using the iscsi-initiator-utils package.
4
votes
7answers
2k views

Linux tool/command to check file system performance

What is the simplest way to check read/write performance to a specific location (e.g. a mounted iSCSI device). I suspect I can't use hdparm because that's lower level. Am I right?
1
vote
3answers
5k views

which Linux iSCSI target support SCSI 3 Persistant reservations?

looking for Linux iSCSI target software that support SCSI-3 persistent reservations? isci enterprise target tgt: scsi-target-utils open-iscsi
0
votes
1answer
161 views

Is it possible to use an EMC SAN in iscsi without starting any Powerwhatever dæmon?

I can't seem to get my iscsi targets working without starting the PowerPath module, even though I don't actually use it. Is it at all possible? Edit: Precision, I'm not currently even using ...
0
votes
1answer
229 views

openiscsi initiator shared ext3 disk

i have an iscsi target disk with only one ext3 partition on opensolaris using comstar i also have two ubuntu instances with openiscsi initators that connect to that disk both instances have this ...
0
votes
1answer
2k views

Howto show connected targets in Linux?

When I do localhost:~# iscsiadm -m discovery -t st -p 192.168.0.4 192.168.0.4:3260,1 iqn.2004-04.com.qnap:ts-509:iscsi.linux02.ba4731 192.168.0.4:3260,1 ...
10
votes
2answers
19k views

LV Status: Not available. How to make it available?

I connect an iSCSI target, create a Physical Volume and Volume Group on it. Then I create an LV, and mkfs.ext3 /dev/vg00/vm and all that works great. Then I disconnect the target iscsiadm -m ...
2
votes
3answers
470 views

Implementation of a fully-redundant, high-available iscsi SAN (consisting of n machines) in conjunction with clustered filesystem

a short example of how the infrastructure may look like: 4 servers act as iscsi targets and expose 1x2TB each (every of those servers has a raid10 for the storage, thus 2TB of usable capacity) n ...
1
vote
3answers
478 views

Do I have to have LUN on a iSCSI Target?

I am using Linux, and was wondering, if I could put LVM directly on a iSCSI target without a LUN?
4
votes
1answer
2k views

Zimbra - NFS vs. iSCSI

We are going to be migrating our mail server from postfix/courier to Zimbra over the next few months. We've run a prototype server over an iSCSI LUN exported from a Dell Equallogic quite successfully. ...
1
vote
3answers
2k views

Bonding iSCSI connection Linux

simple Question: how can i utilize two or more ethernet interfaces on target and initiator to have fail-over to use bandwith of all interfaces Answers? My Setup: both systems run linux and have ...
6
votes
2answers
2k views

Tuning Open-iSCSI initiator settings for VM LUNs

I have a bunch of VM servers running Xen VMs from iSCSI LUNs mounted in the Dom0 host via Open-iSCSI. It's just a simple single-path setup (redundancy is on the target side via clustered storage and a ...
0
votes
5answers
2k views

What OpenSource iSCSI appliances/apps support windows clusters?

I have been wanting to experiment with Windows clustering systems in my spare time, so I need a free, preferably open source, iSCSI Target that can support 2k3 and 2k8 fail-over and possibly High ...