Mac hard resets when mounting external HD

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Re: Mac hard resets when mounting external HD

Post by collegeitdept » Wed Oct 10, 2012 12:04 am

When I use that Terminal command... how much free space do I need available on my internal Macintosh HD or OTHER external HD?

The ZFS disk that's not mounting has almost 3 TB of data stored in it.
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Re: Mac hard resets when mounting external HD

Post by grahamperrin » Wed Oct 10, 2012 12:11 am

collegeitdept wrote:I am now freeing 16 GB off my internal hard drive if that helps.


Problems aside for a moment: it's always good to have plenty of free space. For Apple's HFS Plus with Mountain Lion on a laptop: let's say twenty percent (then the OS can make intelligent use of that space for Mobile Time Machine). For a ZFS pool: again, twenty percent can be recommended.

Back to the Western Digital with which you have trouble: for the probable steps ahead, for copying, the critical thing will be to not connect a third disk too soon.

(Critical only because the step-by-step advice will include disk numbers, and we want those numbers to be predictable.)
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Re: Mac hard resets when mounting external HD

Post by collegeitdept » Wed Oct 10, 2012 12:13 am

So how much free space is needed for the "sudo zpool import" command?

Again, I have almost 3TB of data on the problem ZFS external drive.
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Re: Mac hard resets when mounting external HD

Post by grahamperrin » Wed Oct 10, 2012 12:16 am

collegeitdept wrote:… The ZFS disk that's not mounting has almost 3 TB of data stored in it.


For now, don't worry about the fullness of that 3 TB disk.

For the
sudo zpool import
command, no free space is required.

Hint: did you install Bwana? Now would be a good time to draw your attention to one paragraph in a manual. Bwana will allow you to read the page in your web browser.
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Re: Mac hard resets when mounting external HD

Post by collegeitdept » Wed Oct 10, 2012 12:18 am

What is Bwana?

I didn't see your post to install that before? Do I need anything else before I run that sudo zpool import command???
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Re: Mac hard resets when mounting external HD

Post by collegeitdept » Wed Oct 10, 2012 12:21 am

Is this "Bwana" tool required??
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Re: Mac hard resets when mounting external HD

Post by grahamperrin » Wed Oct 10, 2012 12:30 am

collegeitdept wrote:What is Bwana?

I didn't see your post to install that … 


Page 1, my first post in this topic, with general advice for newcomers to a Community Edition of ZEVO. That advice recommends installation of Bwana. It's not essential, but you'll probably enjoy reading things in your web browser.

Hint: we're approaching another stage where (again) things should not be rushed.
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Re: Mac hard resets when mounting external HD

Post by collegeitdept » Wed Oct 10, 2012 12:44 am

Alright I typed the command into Terminal... how long does it take to run? It seems like Terminal is not doing anything (no progress bar or anything)...
Attachments
Screen Shot 2012-10-09 at 10.44.29 PM.png
Terminal Running
Screen Shot 2012-10-09 at 10.44.29 PM.png (48.19 KiB) Viewed 39 times
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Re: Mac hard resets when mounting external HD

Post by collegeitdept » Wed Oct 10, 2012 12:53 am

I don't think it's working... it doesn't seem like it's doing anything... it's been about 10 minutes. Is this normal without any kind of visual progress bar?
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Re: Mac hard resets when mounting external HD

Post by grahamperrin » Wed Oct 10, 2012 2:04 am

No progress bar: normal in this case.

However, for a pool where everything is good, the run of that particular command should complete very quickly – a second or so.

To abort that command, bring Terminal to front then use a key combination:

Control-C

If the command prompt (with a $ sign) does not reappear in response to Control-C, then wait a few seconds and try a different combination:

Control-T

----

A parallel question: can you recall the exact name of the ZEVO/ZFS volume, its name when you last used it successfully?
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