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Hi to all!
A few days ago I was experimenting with my backup Nas (HP N40L, embedded x64 v605 at that time with 5x500GB disks in a raidz1) and iscsi
I successfully created an iscsi target (100GB size - the size of the volume I created for this test purpose) and was able to connect from my windows 7 ultimate x64 PC successfully. Then formatted the disk as NTFS and was easily able to start copying files there!
I encountered 2 problems, though:
The transfer speed to the iscsi "disk" was about 21MB/s. From the same PC, when transferring to a samba share of the NAS, I get about 70MB/s
I realized that from within the NAS I could find no way to view the files. Is there a way to view the files I throw in the iscsi target?
Thanks guys!
My Nas
Case: Fractal Design Define R2
M/B: Supermicro x9scl-f
CPU: Intel Celeron G1620
RAM: 16GB DDR3 ECC (2 x Kingston KVR1333D3E9S/8G)
PSU: Chieftec 850w 80+ modular
Storage: 8x2TB HDDs in a RaidZ2 array ~ 10.1 TB usable disk space
O/S: XigmaNAS 11.2.0.4.6625 -amd64 embedded
Extra H/W: Dell Perc H310 SAS controller, crosflashed to LSI 9211-8i IT mode, 8GB Innodisk D150SV SATADOM for O/S
Very strangle. For all my server iSCSI transfer is faster then another protocols.
For example my homenas HP D530 - I can't faster, my cpu work with full load. May be Windows 7 not understand iSCSI ?
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Home12.1.0.4 - Ingva (revision 7091)/ x64-embedded on AMD A8-7600 Radeon R7 A88XM-PLUS/ 16G RAM / UPS Ippon Back Power Pro 600 Lab 12.1.0.4 - Ingva (revision 7091) /x64-embedded on Intel(R) Core(TM) i3-3220 CPU @ 3.30GHz / H61M-DS2 / 4G RAM / UPS Ippon Back Power Pro 600
It was really strange, indeed....
This was my assumption, too, that perhaps my windows machine is not very happy with iscsi.
Alexey, what about viewing files of iscsi volume from nas4free?
Can you see the files in there?
If yes, how?
My Nas
Case: Fractal Design Define R2
M/B: Supermicro x9scl-f
CPU: Intel Celeron G1620
RAM: 16GB DDR3 ECC (2 x Kingston KVR1333D3E9S/8G)
PSU: Chieftec 850w 80+ modular
Storage: 8x2TB HDDs in a RaidZ2 array ~ 10.1 TB usable disk space
O/S: XigmaNAS 11.2.0.4.6625 -amd64 embedded
Extra H/W: Dell Perc H310 SAS controller, crosflashed to LSI 9211-8i IT mode, 8GB Innodisk D150SV SATADOM for O/S
ChriZathens wrote:Alexey, what about viewing files of iscsi volume from nas4free?
Can you see the files in there?
If yes, how?
You cannot to see files on iSCSI target, if you not connect to it. You have disk image, such image for NAS4Free-embedded or Live.
For view files you need make memory backed disk over mdconfig, mount it to system and view your files.
I use iSCSI as target for experimental systems, such install nas4free without CD and USB
In this post I wrote about install diskless Freebsd.
Home12.1.0.4 - Ingva (revision 7091)/ x64-embedded on AMD A8-7600 Radeon R7 A88XM-PLUS/ 16G RAM / UPS Ippon Back Power Pro 600 Lab 12.1.0.4 - Ingva (revision 7091) /x64-embedded on Intel(R) Core(TM) i3-3220 CPU @ 3.30GHz / H61M-DS2 / 4G RAM / UPS Ippon Back Power Pro 600
Oh I see...
Thanks for the info...
I thought it would be possible to "mount" the volume which was created to use as iscsi somehow, in order to physically view its contents from inside n4f...
My Nas
Case: Fractal Design Define R2
M/B: Supermicro x9scl-f
CPU: Intel Celeron G1620
RAM: 16GB DDR3 ECC (2 x Kingston KVR1333D3E9S/8G)
PSU: Chieftec 850w 80+ modular
Storage: 8x2TB HDDs in a RaidZ2 array ~ 10.1 TB usable disk space
O/S: XigmaNAS 11.2.0.4.6625 -amd64 embedded
Extra H/W: Dell Perc H310 SAS controller, crosflashed to LSI 9211-8i IT mode, 8GB Innodisk D150SV SATADOM for O/S
ankol11, when you create a volume within a zpool (instead of a dataset), it can be used in order to create an iSCSI extent directly (instead of a file extent under a dataset).
Thus, another machine (an iSCSI client) can connect to that zfs volume and mount it as if it's its own disk. And it can even partition / format, etc (eg. iSCSI initiator in Windows 7).
But the ZFS volume is -unlike a dataset- not a folder within the zpool. But it's also not a disk. And only disks can be mounted under NAS4Free. So, you cannot access inside a ZFS volume by standart means.
I successfully connected an iSCSI volume to its own NAS4Free server via the iSCSI Initiator (found under Disks->Management) but could not successfully mount it on the system (I never believed it would work anyway).
The method alexey123 suggested is -I guess- somekind of volume based memory disk. But I don't know -yet- anything about it...
Edit: Connecting a NAS4Free server to an iSCSI volume served by itself results in kind of a deadlock in boot procedure when the iSCSI initiator tries to reconnect to the target (Connection refused errno=61). So, it's just for self-testing purposes and should be avoided.
