Comments for A System Administrator's Diary http://blog.the-ally.co.uk focused on: Linux, BSD, Mac OS --- by Carsten Heesch Tue, 06 Jan 2009 21:06:01 +0000 http://wordpress.org/?v=2.6.2 Comment on Two neat storage machines by admin http://blog.the-ally.co.uk/2008/05/two-neat-storage-machines/#comment-83 admin Sun, 28 Dec 2008 17:06:49 +0000 http://blog.admin-at-once.co.uk/?p=10#comment-83 I'm afraid I cannot really help you there. Currently I don't have access to any Perc/5i equipped Dell machines with FreeBSD on them. I believe that there are some hotswapping issues with FreeBSD and Perc controllers (regardless whether or not ZFS is being used). As those days hot-swap was not crucial, I haven't even tested that. I’m afraid I cannot really help you there. Currently I don’t have access to any Perc/5i equipped Dell machines with FreeBSD on them. I believe that there are some hotswapping issues with FreeBSD and Perc controllers (regardless whether or not ZFS is being used).
As those days hot-swap was not crucial, I haven’t even tested that.

]]> Comment on Two neat storage machines by Jimmy http://blog.the-ally.co.uk/2008/05/two-neat-storage-machines/#comment-76 Jimmy Sat, 27 Dec 2008 03:22:15 +0000 http://blog.admin-at-once.co.uk/?p=10#comment-76 I've been trying ZFS on a Dell 2950 with a PERC/5i controller. I tried creating 6 RAID-0 arrays. The problem i've been having is if I eject a hot-swap drive, the RAID0 virtual disk disappears; it doesn't come back if I plug it in.. Or plug in a replacement to test "swapping in a replacement drive". The only way i've found to get the drive back requires a reboot, which is troublesome... Do you know of a way to make hot swap work like it should? (No rebooting the server) I’ve been trying ZFS on a Dell 2950 with a PERC/5i controller.

I tried creating 6 RAID-0 arrays.

The problem i’ve been having is if I eject a hot-swap drive, the RAID0 virtual disk disappears; it doesn’t come back if I plug it
in..

Or plug in a replacement to test “swapping in a replacement drive”.

The only way i’ve found to get the drive back requires a reboot, which is troublesome…

Do you know of a way to make hot swap work like it should? (No rebooting the server)

]]> Comment on Distributed Data Centre in-a-box by admin http://blog.the-ally.co.uk/2008/08/distributed-data-centre-in-a-box/#comment-22 admin Fri, 31 Oct 2008 09:00:40 +0000 http://blog.admin-at-once.co.uk/?p=15#comment-22 Thanks, Michel. I did quite a lot of configuration and testing here, but the idea of using MySQL NDB Cluster and GlusterFS over that long distance (one server in the UK, one in the US) failed. It's too slow, unfortunately. So I would recommend not to try this approach for a Mini-CDN like thing. Actually I am considering to get a second server in the UK -- in the same data centre. Then it should work just fine. Stay tuned. ;-) Thanks, Michel.

I did quite a lot of configuration and testing here, but the idea of using MySQL NDB Cluster and GlusterFS over that long distance (one server in the UK, one in the US) failed. It’s too slow, unfortunately. So I would recommend not to try this approach for a Mini-CDN like thing. Actually I am considering to get a second server in the UK — in the same data centre. Then it should work just fine. Stay tuned. ;-)

]]> Comment on Distributed Data Centre in-a-box by Michel http://blog.the-ally.co.uk/2008/08/distributed-data-centre-in-a-box/#comment-16 Michel Fri, 17 Oct 2008 14:55:55 +0000 http://blog.admin-at-once.co.uk/?p=15#comment-16 Hey Carsten - I really enjoy your blog - keep it up! I am impatiently awaiting the outcome of this try-out here. Hope you let us know how it comes out:-) Hey Carsten - I really enjoy your blog - keep it up! I am impatiently awaiting the outcome of this try-out here. Hope you let us know how it comes out:-)

]]> Comment on Distributed Data Centre in-a-box by admin http://blog.the-ally.co.uk/2008/08/distributed-data-centre-in-a-box/#comment-6 admin Thu, 25 Sep 2008 23:03:35 +0000 http://blog.admin-at-once.co.uk/?p=15#comment-6 This project has to wait for the time being. Lacking a bit of time. Be patient if you want to see how that develops, please. This project has to wait for the time being. Lacking a bit of time. Be patient if you want to see how that develops, please.

]]> Comment on Syncing calendars on multiple Macs and Nokia N95 by admin http://blog.the-ally.co.uk/2008/04/syncing-calendars/#comment-3 admin Sat, 10 May 2008 13:54:41 +0000 http://blog.admin-at-once.co.uk/?p=6#comment-3 Of course, it is even easier to sync two or more Macs with Apple's ".Mac", but that is much more expensive then SpanningSync and offers many features, which not everybody necessarily needs (as they are not about syncing). Of course, it is even easier to sync two or more Macs with Apple’s “.Mac”, but that is much more expensive then SpanningSync and offers many features, which not everybody necessarily needs (as they are not about syncing).

]]> Comment on Solaris’ ZFS on FreeBSD 7.0 by A System Administrator’s Diary » Blog Archive » Two neat storage machines http://blog.the-ally.co.uk/2008/04/zfs-on-freebsd/#comment-2 A System Administrator’s Diary » Blog Archive » Two neat storage machines Sat, 10 May 2008 13:44:18 +0000 http://blog.admin-at-once.co.uk/?p=8#comment-2 [...] testing: Dell 2950, Quad Xeon, 8GB, 6×750 GB HDD. I installed FreeBSD 7 with ZFS (following up this article). Firstly it seemed to be a bit tricky, because the PERC/6i controller configuration is — [...] [...] testing: Dell 2950, Quad Xeon, 8GB, 6×750 GB HDD. I installed FreeBSD 7 with ZFS (following up this article). Firstly it seemed to be a bit tricky, because the PERC/6i controller configuration is — [...]

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