Date: Fri, 9 Jun 2017 09:35:02 +0200 From: Andrea Venturoli <ml@netfence.it> To: Polytropon <freebsd@edvax.de> Cc: freebsd-questions@freebsd.org Subject: Re: Panic on external HD disconnection Message-ID: <e547f8ef-8bbb-1526-dad5-0e648475571d@netfence.it> In-Reply-To: <20170608204740.9ad9b1c3.freebsd@edvax.de> References: <929de353-94c4-cbf2-9b33-67f60b007a71@netfence.it> <20170608204740.9ad9b1c3.freebsd@edvax.de>
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On 06/08/17 20:47, Polytropon wrote:
> So the disk was mounted at that specific point in time?
Yes, as I said I was taking a backup, so that disk was mounted and was
being written to.
> Partially understandable. The system will somehow react
> to a mass media device surprisingly removed when it is
> writing to it...
Yes, *partially* understandable.
I just like to know to what extent that "partially" goes.
If I am to expect a full panic, it's ok.
If, somehow, I could get a partial failure, then something is wrong in
my setup and I'll have to investigate.
> In case of accidental UFS disconnect, reconnect the drive,
> do _not_ attempt to mount it right away, but instead perform
> a full fsck ("fsck -yf /dev/da0", for example) of the file
> system on that disk. In best case, fsck will repair any
> damages that did appear, and then return the file system into
> a consistent state, ready for mounting.
That's what I did after the system came up again.
bye & Thanks
av.
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