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I'm using openSUSE 13.1.

I created a new directory on a zpool

zfs create zpgd0/iSCSI -o compression=lz4 -o atime=off

but I'm not looking on that... So I do it again but I'm getting...

zfs create zpgd0/iSCSI -o compression=lz4 -o atime=off
cannot create 'zpgd0/iSCSI': dataset already exists

adding some data

zpool history 
History for 'zpgd0':
2014-08-11.13:38:21 zpool create -f zpgd0 raidz2 scsi-SATA_WDC_WD4001FAEX-0_WD-WMC1F0490461 scsi-SATA_WDC_WD4001FAEX-0_WD-WMC1F0603473 scsi-SATA_WDC_WD4001FAEX-0_WD-WMC1F0606817 scsi-SATA_WDC_WD4001FAEX-0_WD-WMC1F0670246 scsi-SATA_WDC_WD4001FAEX-0_WD-WMC1F0673599 scsi-SATA_WDC_WD4001FAEX-0_WD-WMC1F0715212 scsi-SATA_WDC_WD4001FAEX-0_WD-WMC1F0722699 scsi-SATA_WDC_WD4001FAEX-0_WD-WMC1F0731193 scsi-SATA_WDC_WD4001FAEX-0_WD-WMC1F0732862 scsi-SATA_WDC_WD4001FAEX-0_WD-WMC1F0806663 scsi-SATA_WDC_WD4001FAEX-0_WD-WMC1F0807385 scsi-SATA_WDC_WD4001FAEX-0_WD-WMC1F0816943
2014-08-11.14:13:09 zpool set autoexpand=on zpgd0
2014-08-11.14:14:32 zfs create zpgd0/espacio
2014-08-19.11:47:47 zfs create zpgd0/iSCSI -o compression=lz4 -o atime=off

 zpool status -v
  pool: zpgd0
 state: ONLINE
  scan: none requested

    NAME                                            STATE     READ WRITE CKSUM
    zpgd0                                           ONLINE       0     0     0
      raidz2-0                                      ONLINE       0     0     0
        scsi-SATA_WDC_WD4001FAEX-0_WD-WMC1F0490461  ONLINE       0     0     0
        scsi-SATA_WDC_WD4001FAEX-0_WD-WMC1F0603473  ONLINE       0     0     0
        scsi-SATA_WDC_WD4001FAEX-0_WD-WMC1F0606817  ONLINE       0     0     0
        scsi-SATA_WDC_WD4001FAEX-0_WD-WMC1F0670246  ONLINE       0     0     0
        scsi-SATA_WDC_WD4001FAEX-0_WD-WMC1F0673599  ONLINE       0     0     0
        scsi-SATA_WDC_WD4001FAEX-0_WD-WMC1F0715212  ONLINE       0     0     0
        scsi-SATA_WDC_WD4001FAEX-0_WD-WMC1F0722699  ONLINE       0     0     0
        scsi-SATA_WDC_WD4001FAEX-0_WD-WMC1F0731193  ONLINE       0     0     0
        scsi-SATA_WDC_WD4001FAEX-0_WD-WMC1F0732862  ONLINE       0     0     0
        scsi-SATA_WDC_WD4001FAEX-0_WD-WMC1F0806663  ONLINE       0     0     0
        scsi-SATA_WDC_WD4001FAEX-0_WD-WMC1F0807385  ONLINE       0     0     0
        scsi-SATA_WDC_WD4001FAEX-0_WD-WMC1F0816943  ONLINE       0     0     0

errors: No known data errors

I have no errors but the folder does not appear, so what Can I do?

sorry add it

zfs list
zpgd0         933K  35,5T  54,7K  /zpgd0
zpgd0/iSCSI  54,7K  35,5T  54,7K  /zpgd0/iSCSI
share|improve this question
What is the output of zfs list? – ewwhite Aug 21 '14 at 20:20
sorry added that... – maniat1k Aug 21 '14 at 20:40
up vote 2 down vote accepted

Your new filesystem is in /zpgd0/iSCSI. To access it, you can cd /zpgd0/iSCSI.

If it is not currently mounted, you can use zfs mount zpgd0/iSCSI.

Due to the naming of the filesystem, I'm betting that you probably want to create a ZFS zvol to present as block storage for iSCSI. If that's the case, what you're doing is taking you down the wrong path.

share|improve this answer
ok did not worked with cd... I'm very new to this wit zfs mount worked out. thanks! – maniat1k Aug 21 '14 at 20:44
You said that I was taking down the wronkg path... why do you say so? – maniat1k Aug 21 '14 at 20:48
@maniat1k because you have to supply the -V <size> parameter to your zfs create call to set up volumes. Also, you probably also want -s for sparse allocation. What you have done is creating another data set to host files, it would not work as a block device equivalent. – the-wabbit Aug 21 '14 at 23:26
Ahh, now I see what you mean. We are not going to expose the raw space to iSCSI but several files which are the speciffic iSCSI fileio devices. – maniat1k Aug 22 '14 at 13:53

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