RHEL6 iSCSI Service Remains Stopped After Install
•
1 gostou•7,456 visualizações
The iSCSI service on Red Hat Enterprise Linux 6 was unable to start, even after issuing the start command. This was because in RHEL 6, the iSCSI service starts lazily by default if the root file system is not on an iSCSI device or nodes are not marked for automatic startup. The issue was resolved by using the iscsiadm command to discover targets, which causes the iSCSI service and modules to initialize, or by explicitly forcing the iSCSI service to start.
![Issue:
Unable to start iSCSI service on Redhat Enterprise Linux 6.
Symptoms:
After installing iSCSI modules using 'yum install iSCSI*', following modules were
installed by the system.
[root@redhatcentos Desktop]# rpm -qa | grep iscsi
iscsi-initiator-utils-6.2.0.873-2.el6.x86_64
iscsi-initiator-utils-devel-6.2.0.873-2.el6.x86_64
But, when trying to start the iscsi service, iscsi service remained stopped, as
shown in the example below.
[root@redhatcentos Desktop]# service iscsid status
iscsid is stopped
[root@redhatcentos Desktop]# service iscsid start
[root@redhatcentos Desktop]# service iscsid status
iscsid is stopped
# Even though service 'start' command was issued, iscsid remained stopped.](https://image.slidesharecdn.com/iscsi-redhat6-131125150324-phpapp02/85/iscsid-remains-stopped-in-redhat-EL-6-1-320.jpg)
![Cause:
In Red Hat Enterprise Linux 6, the iSCSI service is lazily started by default. If root is
not on an iSCSI device or there are no nodes marked with node.startup =
automatic then the iSCSI service will not start.
Ref: https://access.redhat.com/site/documentation/enUS/Red_Hat_Enterprise_Linux/6/html/Storage_Administration_Guide/chiscsi.html
Resolution:
Use iscsiadm command that requires iscsid or the iscsi kernel modules to be
started. For example, running the discovery command iscsiadm -m discovery -t st
-p ip:port will cause iscsiadmin to start the iSCSI service.
[root@redhatcentos Desktop]# iscsiadm -m discovery -t sendtargets -p
192.168.1.12
Starting iscsid:
[ OK ]
192.168.1.12:3260,2 iqn.1992-08.com.netapp:sn.4055372815
[root@redhatcentos Desktop]# service iscsid status
iscsid (pid 3039) is running...
[root@redhatcentos Desktop]#
Or,
Force the iSCSI daemon to run and iSCSI kernel modules to load, run service iscsid
force-start.
ashwinwriter@gmail.com](data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7)
Recomendados
Recomendados
Mais conteúdo relacionado
Mais procurados
Mais procurados (20)
Semelhante a RHEL6 iSCSI Service Remains Stopped After Install
Semelhante a RHEL6 iSCSI Service Remains Stopped After Install (20)
Mais de Ashwin Pawar
Mais de Ashwin Pawar (20)
Último
Último (20)
RHEL6 iSCSI Service Remains Stopped After Install
- 1. Issue: Unable to start iSCSI service on Redhat Enterprise Linux 6. Symptoms: After installing iSCSI modules using 'yum install iSCSI*', following modules were installed by the system. [root@redhatcentos Desktop]# rpm -qa | grep iscsi iscsi-initiator-utils-6.2.0.873-2.el6.x86_64 iscsi-initiator-utils-devel-6.2.0.873-2.el6.x86_64 But, when trying to start the iscsi service, iscsi service remained stopped, as shown in the example below. [root@redhatcentos Desktop]# service iscsid status iscsid is stopped [root@redhatcentos Desktop]# service iscsid start [root@redhatcentos Desktop]# service iscsid status iscsid is stopped # Even though service 'start' command was issued, iscsid remained stopped.
- 2. Cause: In Red Hat Enterprise Linux 6, the iSCSI service is lazily started by default. If root is not on an iSCSI device or there are no nodes marked with node.startup = automatic then the iSCSI service will not start. Ref: https://access.redhat.com/site/documentation/enUS/Red_Hat_Enterprise_Linux/6/html/Storage_Administration_Guide/chiscsi.html Resolution: Use iscsiadm command that requires iscsid or the iscsi kernel modules to be started. For example, running the discovery command iscsiadm -m discovery -t st -p ip:port will cause iscsiadmin to start the iSCSI service. [root@redhatcentos Desktop]# iscsiadm -m discovery -t sendtargets -p 192.168.1.12 Starting iscsid: [ OK ] 192.168.1.12:3260,2 iqn.1992-08.com.netapp:sn.4055372815 [root@redhatcentos Desktop]# service iscsid status iscsid (pid 3039) is running... [root@redhatcentos Desktop]# Or, Force the iSCSI daemon to run and iSCSI kernel modules to load, run service iscsid force-start. ashwinwriter@gmail.com