Tag Archives: Zfs

iSCSI: Migrating from istgt to ctld

February 7, 2016 23:16 / Leave a Comment /

Deciding to upgrade my NAS from FreeBSD 9.2-RELEASE to 10.2-RELEASE, I wanted to try out the new native iSCSI initiator. As my iSCSI-network is physically separated by vlan I don’t bother with chap-authentication. I allow the entire network connect to the presented targets. The only part of the config previously used in istgt that couldn’t … Read More →

Posted in: FreeBSD, VMware, ZFS / Tagged: , , , , ,

Expanding a zpool and adding ZIL (log) and L2ARC (cache)

February 22, 2013 23:55 / Leave a Comment /

As the nas zpool responsible for storing media and documents have been growing out of its space lately it was time to do something about it. This is how it looked previously. # zpool list san NAME SIZE ALLOC FREE CAP DEDUP HEALTH ALTROOT san 3.62T 2.93T 710G 80% 1.00x ONLINE – # zpool status … Read More →

Posted in: FreeBSD, ZFS / Tagged: , , , , ,

Installing FreeBSD 9.1 using root on ZFS and GPT disks

February 1, 2013 23:38 / Leave a Comment /

This is partly based on the excellent guide at http://daemon-notes.com/articles/system/install-zfs/begin. Boot with FreeBSD 9.1 installer and select Live CD when the installer starts. Identify the disks you want to install to. SATA disks are named /dev/adaX and USB pendrives and SCSI drives are named /dev/daX. dmesg|egrep (ada|da) Of which output could look like this: da0 … Read More →

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Copying a ZFS volume across a server

April 22, 2012 16:04 / Leave a Comment /

Take a snapshot of the volume on source server: root@source# zfs snapshot zfs_dataset/volume@now Send the snapshot to the target server. Target zfs_dataset can be different: root@source# zfs send zfs_dataset/volume@now | ssh target zfs recieve zfs_dataset/volume@now Clone the snapshot with the supposed name of the new volume zfs clone zfs_dataset/volume@now zfs_dataset/clone Promote it, in effect switching … Read More →

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Setting up iSCSI

March 4, 2012 16:23 / Leave a Comment /

Should operate on a physical separate lan and VLAN 200 has been set aside for this. Server Install net/istgt from ports and set istgt_enable=”YES” in /etc/rc.conf. iSCSI uses an addressing scheme called iqn which is built up by the reverse domainname along with the founding date. In this case the address is iqn.2004-06.net.strahlert.home /usr/local/etc/istgt/auth.conf Set … Read More →

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