[Gluster-users] GlusterFS and iScsi target export

[Jon Heese]

Okay, I wasn't reading carefully...  Try this:

dd if=/dev/zero of=disk3 count=1 bs=1 skip=50G

That will give you a 50GB thin-provisioned file for iSCSI.

Regards,
Jon Heese

On Apr 13, 2015, at 7:02 PM, "Jon Heese" <jonheese at jonheese.com<mailto:jonheese at jonheese.com>> wrote:

Cong,

Try adding "skip=2G" (I think) to your dd command and change the bs and count both to 1.  This will essentially thin-provision your iSCSI volume file.

I use this method to make iSCSI volumes that live on gluster.

Regards,
Jon Heese

On Apr 13, 2015, at 5:23 PM, "Yue, Cong" <Cong_Yue at alliedtelesis.com<mailto:Cong_Yue at alliedtelesis.com>> wrote:

I am using GlusterFS to make my storage between several servers can be replicated with fault tolerance. And I am doing the similar way as

http://www.gluster.org/community/documentation/index.php/GlusterFS_iSCSI

It works well, but in the process of
dd if=/dev/zero of=disk3 bs=2G count=25

it needs long time as for my storage volume is around 1TB. I have one question about whether there is some way to make gluster volume can be exported as an iScsi target without creating disk files?
For iscsi, it support both disk file and logical unit like /dev/sdb1, but it seems it could not support normal folder like the mount folder from glusterFS.

Can anybody kindly advise?

Thanks,
Cong


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