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From: David Sterba <dsterba@suse.cz>
To: Nikolay Borisov <nborisov@suse.com>
Cc: Anand Jain <anand.jain@oracle.com>, linux-btrfs@vger.kernel.org
Subject: Re: [RFC PATCH] btrfs: check for SB checksum when scanned
Date: Wed, 14 Mar 2018 16:38:04 +0100	[thread overview]
Message-ID: <20180314153804.GK32007@twin.jikos.cz> (raw)
In-Reply-To: <8951fcb0-aadd-6a10-50f7-eac44ff41438@suse.com>

On Wed, Mar 14, 2018 at 11:20:41AM +0200, Nikolay Borisov wrote:
> 
> 
> On 13.03.2018 17:06, Anand Jain wrote:
> > We aren't checking the SB csum when the device scanned,
> > instead we do that when mounting the device, and if the
> > csum fails we fail the mount. How if we check the csum
> > when the device is scanned, I can't see any reason for
> > why not? any idea?
> 
> So what problems does this solve?

Devices with partially corrupted superblock with a valid UUID will be
added to list of scanned devices. This will be rejected at mount time so
it's not a problem in the end but there are structures tracking the
device, so we'd get rid of that early.

  parent reply	other threads:[~2018-03-14 15:40 UTC|newest]

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-03-13 15:06 [RFC PATCH] btrfs: check for SB checksum when scanned Anand Jain
2018-03-14  9:20 ` Nikolay Borisov
2018-03-14 12:03   ` Austin S. Hemmelgarn
2018-03-14 15:38   ` David Sterba [this message]
2018-03-14 15:35 ` David Sterba
2018-03-14 15:48 ` David Sterba

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