file transfer crashing NAS4Free

[adilux]

has anyone encountered crashes using FreeFileSync with Nas4free?

whenever i sync files from one server over to NAS4Free using FreeFileSync program over CIFS/SMB shares, my box hangs, and i need to hard shut down the server. nothing responds.

[Lord Crc]

Do you have swap available? Only time my nas4free box has crashed hard was when it ran out of memory and didn't have swap.

[adilux]

i checked and it says i have a 'default swap' 3GB and it is not enabled. Should i add more and enable it?

[Lord Crc]

Nah that should be sufficient. Are you using ZFS? Maybe try limiting ARC?

[adilux]

i believe i'm using ZFS, but where do i set the ARC ?

[adilux]

the nas box doesn't hang right away, the transfer of files would run for a bit and then hang. I've also tried transferring without FreeFileSync and still begins to hang, so i restart it as soon as i can.

[Lord Crc]

i believe i'm using ZFS, but where do i set the ARC ?

How many physical disks do you have?

In any case, you can force it to use a lower amount of ARC by going to System|Advanced|loader.conf, then add a new variable called "vfs.zfs.arc_max" (without the quotes). To set the max to 2GByte, use the value "2G" (again without quotes). Not sure how much memory you have, if it's 3GB RAM you have, I would try going so low as 1GB as the max ARC value, just to test stability.

Here's from my computer, which has 16GB RAM, so I set the max ARC to 12GB to leave some room for other applications I run.

https://www.dropbox.com/s/4cfgef273rjh5 ... x.png?dl=0

Ignore the other values in that screenshot, and you don't need to fiddle with ARC min size.

[adilux]

I have 3 physical hdd on a hardware raid controller jbod.


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[adilux]

4gb of memory PowerEdge 1800


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[Lord Crc]

I have 3 physical hdd on a hardware raid controller jbod.

I'm pretty sure you've set up something wrong then, because only one "disk" is shown in the image you posted, which seems to indicate you've set up a raid on the raid controller, not jbod.

For comparison, here's my setup, where I have 8 physical disks on a HBA card (thus no raid possible), in addition to two SSD's connected to the motherboard:

nas4free_disks.png

edit: and here's the pool, for reference:

nas4free_pool.png

[adilux]

Hmm ok I'll redo my disks thanks for pointing that out


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[Lord Crc]

I would start with redoing the disks and limit the ARC to 1G, and see if that helps.

[adilux]

the drives are plugged into the raid controller, if i don't initialize them on any type of array, the server can't see the drives, so i'll need to get to the machine physically to take them off the raid controller.
unless there's another way to make them JBOD on the raid controller.

[crowi]

which raid controller do you have?

[Jack Foobar]

Just an FYI, you can flash your LSI card to IR firmware instead of IT, and you will have RAID. Although you won't have alot of memory to do RAID with, it'll still work. But not really recommended in a NAS setup when you're doing ZFS. IT is for ZFS. IR/RAID for UFS/flat filesystems.

[adilux]

which raid controller do you have?

I have a Dell CERC Sata 1.5/6ch BIOS v4.1-0 [BUILD 7419]
controller #0 Dell Cerc SATA at PCI Bus:03, Dev:09, Func:00

raid controller,
options are limited to raid 0, 1, 5
if i don't initialize them, nas4free doesn't see any drives.

[Lord Crc]

options are limited to raid 0, 1, 5

You really don't have an option for "Simple Volume" or "JBOD"?

[adilux]

ok Finally, I'm at the machine, i pop open the case to find that there are only 2 SATA slots on the other raid controller (on-board), so that wont work. So made each disk a volume of it's own. Would that work? (oh and i added an extra physical disk)
the selection was
VOLUME or RAID1
but now i can't delete the old zfs volume

the VOLUME option probably didn't show up because i've been selecting multiple disks when creating the volume/raid configuration, so this time when i clicked on one it allowed me to select VOLUME