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Questions[conversion](server)

Martin Hope
alfish
Asked: 2012-01-03 17:37:39 +0800 CST
  • 3

I have a large Mysql database containing tens of tables which I need to convert to Postgresql. I have tried a couple of ancient Perl scripts which I found here and there but none of them did the job correctly. So wondering if there is any free and efficient tool/script which you have tried and actually does the conversion with the least hassle.

Thanks

linux mysql database postgresql conversion
Martin Hope
SyRenity
Asked: 2011-11-07 11:19:06 +0800 CST
  • 6

I have some open-source Xen images (.img), that I want to convert to VirtualBox.

Both the methods I tried (convertfromraw or to .xva via xva.py then to ova via XenConvert) produce FATAL: Fatal: No bootable medium found!.

Any idea what the most reliable method is for performing this conversion?

Thanks in advance.

xen virtualbox conversion
Martin Hope
leeand00
Asked: 2011-10-07 10:49:34 +0800 CST
  • 7

I'm reading about how to configure IPv6 on Ubuntu, I've gotten to the section about Reading IPv6 Addresses and though the first two examples make sense to me, the last one escapes my grasp a bit, as it's been a few years since my last networking class:

How does one convert the third form into the long form?

Here is the example I am having trouble with:

  • third form:         - 2002::10:0.0.1
  • long form:         - 2002:0000:0000:0000:0000:0000:0a00:0001
  • canonicalform: - 2002::a00:1

I understand hex so far as instead of ending up with the number ten when you count beyond nine you end up with A, B, C, D, E, and F before incrementing the digit in the next column.

Can you please show me how this works using math, not just some online JavaScript converter?

Thank you!

ipv6 ipv4 conversion
Martin Hope
chronos
Asked: 2011-05-10 09:09:02 +0800 CST
  • 7

I have Ubuntu server with 1x2TB HDD and 1x128GB SSD (unused). There are 2 partitions: /boot, and a physical volume for LVM, which has 1 group and 5 logical volumes: /, /var/log, /home, /srv, /tmp.

Recently the 2nd 2TB HDD arrived. We need better redundancy, so I'm looking at either joining 2 HDDs into 1 RAID1 (with /boot, /, and an LVM partition with /home, /var/log, /srv, /tmp), or adding 2nd HDD as LVM physical volume, and using LVM mirroring for logical partitions.

In addition to redundancy, I need to achieve 2 more goals: - relatively safe change from 1xHDD to 2xHDDs (I'm administering remotely a live system) - easy future extensions of LVM partitions.

Here, is RAID1 superior to LVM mirroring? (I believe it is. I'm talking software RAID1 here.)

If it is - what would be the best way to convert a 1xHDD live system to a 1xRAID1 live system remotely, if all I have is an empty 128GB SSD, and all HDD data currently fits onto it easily?

lvm mirroring raid conversion