ZFS Replication on FreeBSD

This script will replicate a ZFS pool to another FreeBSD machine. The sync process is quick, after the initial copy, and depending upon how much data changed. Download this shell script: http://www.tediosity.com/zfsrep.sh This script was written by another author for Solaris and I have fixed it to work on FreeBSD. I chose to use: /root/zfsrep ...

Setup NIS + Red Hat + CentOS + Linux

The following describes a procedure to set up NIS network name service under Red Hat Linux. This is geared toward a small intallation with only one domain. However, it should be fairly evident how to add more NIS domains. The NIS domain name has nothing to do with any DNS naming convention being used. In ...

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Dell 2970 – Crashes / Reboots

Error on screen: HyperTransport error caused a system reset Embedded I/O Bridge Device 2 SEL will show: Chipset Err: Critical Event Sensor PCI Err (BUS 0 Device 7 Function 0) was asserted There is a discussion about it here (with no real solution): http://en.community.dell.com/support-forums/servers/f/946/t/19281276.aspx I replaced both power supplied with known good units from a ...

ZFS + List all snapshots

zfs list -t snapshot Example Output: nas1# zfs list -t snapshot NAME USED AVAIL REFER MOUNTPOINT nfs/datastore@rep-init-20110113013713 18K – 21K – nfs/datastore@rep20110113013825 311M – 311M – nfs/datastore@rep20110113015314 0 – 68K –

ZFS NFS Export

Activate NFS on the pool: zfs set sharenfs=on Now restrict access by IP range: zfs sharenfs=”-maproot=root -alldirs -network 10.10.40.0 -mask 255.255.255.0″ Verify using showmount: nas1# showmount -e Exports list on localhost: /nfs/datastore 10.10.40.0 /nfs 10.10.40.0

FreeBSD LAGG / LACP Uneven Distribution

If you have setup LAGG on FreeBSD and are noting that one NIC is getting all of the traffic. Switch to roundrobin and check results. The primary (“MASTER”) NIC will always receive the incoming traffic. With roundrobin all of the traffic will exit all NICs assigned to the LAGG.

FreeBSD + HAST + CARP + NFS

FreeBSD recently introduced a disk replication setup: HAST. This is FreeBSD’s answer to DRDB for Linux. Some very good blog posts, with scripting, can be found here: FreeBSD + HAST + CARP + NFS HAST with ZFS My issues with HAST are its feeling of instability and the addition of numerous points of failure… sloppy ...

Dell Firmware Upgrade

If you have been searching around for the proper ISOs to use. These two ISOs are what you need to use. This is bootable: cdu_1.5_core_225_A00.iso After you have burned and booted with the above CD. Download these three files: http://ftp.us.dell.com/sysman/OM_6.2.0_SUU_A01.iso.001 http://ftp.us.dell.com/sysman/OM_6.2.0_SUU_A01.iso.002 http://ftp.us.dell.com/sysman/OM_6.2.0_SUU_A01.iso.003 The above files need to be joined: Windows: copy /b OM* OM_610_SUU_A01.iso Linux: ...

Reset Password Foundry EdgeIron – Asset Recovery

Foundry Models Covered: EIF24G, EIF4802CF, EIF48G, EIF24GS, EIF48GS, etc. 1) Establish a connection to the device on the console port 2) Power the switch on, while holding down ctrl-u to access the system file menu (technically you can just hit �ctrl-u� in the one second time between powering on and it actually loading, but its ...