Re: CentOS 7 iscsi gateway using lrbd

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"Status:
This code is now being ported to the upstream linux kernel reservation API added in this commit:

https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/block/ioctl.c?id=bbd3e064362e5057cc4799ba2e4d68c7593e490b

When this is completed, LIO will call into the iblock backend which will then call rbd's pr_ops."


Does anyone know how up to date this page? http://tracker.ceph.com/projects/ceph/wiki/Clustered_SCSI_target_using_RBD


Is currently only Suse supporting active/active multipath for RBD over iSCSI?  https://www.susecon.com/doc/2015/sessions/TUT16512.pdf


I'm trying to configure active/passive iSCSI gateway on OSD nodes serving RBD image. Clustering is done using pacemaker/corosync. Does anyone have a similar  working setup? Anything I should be aware of?


Thanks

Dominik


On Mon, Jan 18, 2016 at 11:35 AM, Dominik Zalewski <dzalewski@xxxxxxxxxxxxx> wrote:
Hi,

I'm looking into implementing iscsi gateway with MPIO using lrbd - https://github.com/swiftgist/lrb




From above examples:

For iSCSI failover and load-balancing,

these servers must run a kernel supporting the target_core_

rbd module. This also requires that the target servers run at

least the version 3.12.48-52.27.1 of the kernel-default ­package.

Updates packages are available from the SUSE Linux

Enterprise Server maintenance channel.


I understand that lrbd is basically a nice way to configure LIO and rbd across ceph osd nodes/iscsi gatways. Does CentOS 7 have same target_core_rbd module in the kernel or this is something Suse Enterprise Storage specific only?


Basically will LIO+rbd work the same way on CentOS 7? Has anyone using it with CentOS?


Thanks


Dominik





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