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Questions tagged [iscsi]

iSCSI is a protocol to exchange SCSI commands over TCP/IP and by so doing makes it possible to manage storage devices over the network.

77 questions
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Mount iscsi drive at boot - system halts

I am running Oracle Linux 7 (CentOS / RedHat based distro) in a VirtualBox VM on a Mac with OS X 10.10. I have a Synology Diskstation serving as an iscsi target. I have successfully connected to the Synology, partitioned the disk and created a…
Allan
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NFS server causes high load even when idle

I have an Ubuntu (12.04) NFS server that has a high load (larger than 10) even when nothing is running. In detail, the storage is provided by an iSCSI device, on which I have 5 logical volumes (LVM) and some ext4 partitions. Even with all services…
Giuseppe Vacanti
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iscsi vs iscsid services

From ISCSI clients, we execute # systemctl start iscsi. However, i can see there is another service called iscsid. Can anybody explain about iscsi service vs iscsid service in rhel7.?
krs4keshara
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iSCSI login failed with error 24 - Could not log in to all portals

I am trying to set up a iSCSI target: [root@localhost /]# targetcli targetcli shell version 2.1.fb37 Copyright 2011-2013 by Datera, Inc and others. For help on commands, type 'help'. /> cd backstores/fileio /backstores/fileio> create disk01…
dr_
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iSCSI device mapped to different SCSI device

I have an iSCSI disk array connected to a server (Ubuntu). When I login with iscsiadm -m node --login -p 192.168.1.240 the device used to appear as /dev/sdb. I created a volume group with LVM using /dev/sdb, and eventually ext4 partitions on it.…
Giuseppe Vacanti
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What identifier is used by multipath to determine the same block devices?

In my application I want to multipath different devices, both local and iSCSI or FC exported. However, I fail to google the documentation that would clearly explain the mechanism of decision that block devices are the same by multipath util. There…
ikudyk
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Local disks detected as multipath device

My local partitions are detected as multipath device $multipath -l mpathb (360014380125d90420000a000003e0000) dm-9 HP,HSV450 size=200G features='1 queue_if_no_path' hwhandler='0' wp=rw `-+- policy='round-robin 0' prio=0 status=active `- 3:0:0:1 sdb…
Zama Ques
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24 - iSCSI login failed due to authorization failure

When I run iscsiadm --mode node --targetname iqn.2018-12.dz.esi:iso --portal 10.11.0.2 --login I get this error: Logging in to [iface: default, target: iqn.2018-12.dz.esi:iso, portal: 10.11.0.2,3260] (multiple) iscsiadm: Could not login to [iface:…
Yasmine
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SCSI: SAN or local disk?

I have a Debian 9 running. It has a SSD connected as well as a fibrechannel link to a SAN storage. As far I see both are visible as /dev/sdX devices. How can I find out what is the disk and what is the storage? Where is the storage configured in the…
chris01
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Multipath device name doesn't display correctly

I'm playing with iscsi and I'm trying to figure out why the vendor/product names aren't showing up correctly. I've restarted all the appropriate services along with a reboot. Listed below are the output along with an excerpt of the config…
sdot257
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iptables rules for iscsi initiator

I need to configure iptables on my client (iscsi-initiator). From tcpdump, I can see that the server (iscsi target) sends tcp from port 3260. So I have added following iptables rule on my client (where 10.1.212.51 is the iscsi target): -A INPUT -i…
Martin Vegter
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iscsiadm: cannot make connection to : No route to host

when I try iscsiadm discovery: iscsiadm -m discovery -t sendtargets -p I get this error: iscsiadm: cannot make connection to : No route to host however, I can ping the IP fine. I have added following rule in route: ip route add /32…
Martin Vegter
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How to securely export a device (HDD)?

So I have a Scientific Linux 6.3 (RHEL clone so basically the question is Redhat related) machine called "B" (with an extra "A" HDD besides the system HDD) and a notebook with SL 6.3. They are in a /24 IPv4 subnet, and can fully reach each other.…
gasko peter
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Difference between multipath -ll command and multipath -l command

From the multipath man page http://linux.die.net/man/8/multipath multipath -l shows the current multipath topology from information fetched in sysfs and the device mapper while multipath -ll shows the current multipath topology from all available…
The_Lost_Avatar
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tgt daemon not working properly

bl_root@bL:~$ service tgt status tgt start/running, process 1544 bl_root@bL:~$ tgtadm --lld iscsi --op show --mode target tgtadm: failed to send request hdr to tgt daemon, Transport endpoint is not connected The error code indicates the daemon is…
CodeMagic
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