swap files......

[leenux_tux]

Hello forum,

Not sure if this is the right place to post this question.......

Spotted something I think is a little odd regarding swap files on one of my freenas boxes...

I have two freenas systems (testing different methods of backing up an freenas box to another freenas box). When I run "swapctl -l" on my main freenas box I get this...

[root@freenas01] ~# swapctl -l
Device: 1024-blocks Used:
[root@freenas01] ~#

When I run the same command on my backup freenas system I get this.....
[root@freenas02] ~# swapctl -l
Device: 1024-blocks Used:
/dev/ada0p1 2097152 0
/dev/ada1p1 2097152 0
/dev/ada2p1 2097152 0
/dev/ada3p1 2097152 0

This seems a little odd to me...
On my main systems (freenas01) I have 4 X 2TB hard drives and 8GB RAM. On my secondary freenas box (freenas02) I have 4 X 1TB hard drives and 8GB of RAM.

I thought that ZFS/Freenas automatically created a swap file on each drive that was part of the pool ?

In "Settings/Advanced" freenas is set to use 2GB of swap on each drive and has never been set to zero.

Interested to see what other folks are seeing and wondering if I have a "bad" system for some reason.

leenux_tux

 

[William Grzybowski]

Your pool in freenas01 was probably imported from an existing pool created in another system or with swap size set to 0.

Paste "gpart show"

 

[leenux_tux]

Hello William,

Thanks for the response.

The system was created from scratch. I had some strange issues with a previous set of drives (the ones that are now in my backup box, long story) so I backed everything off to a USB drive, purchased 4x2TB drives, installed them, re-created the pool, all the datasets, users, shares, (CIFS/NFS), everything. Then restored all my data.

Here is the top part of the gpart show out put. I have only shown the top part (plus one snapshot) as I have loads of snapshots listed as well...

----------------------------------------------------------------------------------------------------------------------------------------
[root@freenas01] ~# gpart show | more
=> 63 7821249 da0 MBR (3.7G)
63 1930257 1 freebsd (942M)
1930320 63 - free - (31k)
1930383 1930257 2 freebsd [active] (942M)
3860640 3024 3 freebsd (1.5M)
3863664 41328 4 freebsd (20M)
3904992 3916320 - free - (1.9G)

=> 0 1930257 da0s1 BSD (942M)
0 16 - free - (8.0k)
16 1930241 1 !0 (942M)

=> 0 1930257 da0s2 BSD (942M)
0 16 - free - (8.0k)
16 1930241 1 !0 (942M)

=> 34 2097151933 zvol/TANK/VMS-ISCSI@auto-20121221.0900-2w GPT (1T)
34 2014 - free - (1M)
2048 2097149919 1 !aa31e02a-400f-11db-9590-000c2911d1b8 (1T)
----------------------------------------------------------------------------------------------------------------------------------------

It's seems odd I am not getting any out for my 2TB drives, just the thumbdrive where freenas is installed....

Here is "camcontrol" output, just in case it's of any use..

[root@freenas01] ~# camcontrol devlist
<WDC WD20EURS-63S48Y0 51.0AB51> at scbus0 target 0 lun 0 (pass0,ada0)
<ST2000DL004 HD204UI 1AQ10001> at scbus1 target 0 lun 0 (pass1,ada1)
<SAMSUNG HD204UI 1AQ10003> at scbus4 target 0 lun 0 (pass2,ada2)
<ST2000DL004 HD204UI 1AQ10001> at scbus5 target 0 lun 0 (pass3,ada3)
<SanDisk Cruzer Edge 1.20> at scbus8 target 0 lun 0 (pass4,da0)

Also, not sure if this is important, when I do a "gpart show da0" I get some output, this is my thumbdrive where freenas is installed. When I do "gpart show adaX" (where X is 0,1,2,3) I get this "gpart: No such geom: ada0."

Leenux_tux

 

[leenux_tux]

Just done a quick look at my other freenas box (freenas02)....

When I do a gpart show I get information about all of the drives, not just the thumbdrive, with information about the swap space. Also, if I do a "gpart show ada0" (for example) I get output for that specific drive, which I don't on freenas01.

Looks like I have a problem !!!

 

[William Grzybowski]

Like I said, the pool in freenas01 was not originally created with FreeNAS GUI, it was probably created using CLI or something, using the entire disk.