Re: [PATCH] Wait for mdraid arrays to become clean before reboot / halt

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Hi,

On 09/30/2009 07:21 PM, Jeremy Katz wrote:
On Wed, Sep 30, 2009 at 10:52 AM, Hans de Goede<hdegoede@xxxxxxxxxx>  wrote:
With the new external metadata mdraid support we need to wait for raid
sets to become clean (iow for mdmon to have finished updating the metadata)
before rebooting. Otherwise we get a full array sync on the first boot after
installation.

Does this happen on a regular system shutdown/reboot?


Yes, atleast in initscripts git, I need to poke Bill to build this for F-12
otherwise we will get unhappy Intel BIOS RAID users (resync of the set on each boot)

Also, this is kind of unfortunate as it will be a point of latency for
people and they're going to think that things are just hung.

Well, unless they start out with a degraded set, the latency is about 1 second for marking
the set clean in the metadata.

and if they started with a set which needed to be synced up, well ... don't do that
you silly.

Is there any sort of progress display that we can give

We could file an RFE for this against mdadm. But currently, no.

Regards,

hans

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