Have you guys seen/tried mdadm 1.90? I am delightfully experiencing the
neat issues [read problems] with MY system [sys1], and am too into
myself to be able to take on serious other-probs. The doc [which is
still a tad lite, NB] has a grow command. Understand that your files
exist on/in a filesystem, which has a _size_. Growing RAID and growing
fs are two, nonrelated things. But if you want #2, then you have to do
both 1 & 2. There is definately more than one way to "skin a cat", so
pgms of which you are familiar might be queried first.
Price - 2cents
b-
caveat:
You may not get what you paid for -
but, you always pay for what you get. <-Practise .sig
Mike Hardy wrote:
Frank Wittig wrote:
It actually is available.
I've tested it and it worked fine for me. But taking a backup is
highly recommended.
The trick is not to use mdadm, since growing with mdadm is not
possible at the moment. Use raid-tools instead.
The program raidreconf comes along with raidtools. This prog takes
two raid-tab files as input which describe the array configuration
before and after reconfiguration. (See man raidreconf for further
details)
I'll second both major points here:
raidreconf does work, but it can fail and leave things completely
destroyed (imagine one bad block somewhere after parity was partially
migrated), so take a backup.
Given that you're taking a backup already then, creating a new array
(with its optimized resync) might be faster if its an online backup.
I'm 2 for 4 now on raidreconf working, with the two failures (sadly)
being of the "operator error" variety - raidreconf is picky and fails
slow if your disk sizes aren't what it expects, I found. It got to the
end and ran out of space on me due to a slightly different "250GB"
disk size once. The other was a bad block along the way - I should
have done smartctl -t long on all drives prior to resize. Both lessons
learned...
-Mike
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