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From: Eric Sandeen <>
To: Chaitanya Kulkarni <>,
	Pavel Reichl <>,
	"" <>
Subject: Re: [PATCH v3] mkfs: Break block discard into chunks of 2 GB
Date: Wed, 4 Dec 2019 10:24:32 -0600
Message-ID: <> (raw)
In-Reply-To: <>

On 11/30/19 4:01 PM, Chaitanya Kulkarni wrote:
> Not an XFS expert, but patch to handle ^C is been discussed on the
> block layer mailing list which includes discard operations. [1]
> This solution seems specific to one file system, which will lead to
> code repetition for all the file systems which are in question.
> How about we come up with the generic solution in the block-layer so
> it can be reused for all the file systems ?
> (fyi, I'm not aware of any drawbacks of handling ^C it in the block
> layer and would like to learn if any).
> [1]
> -Chaitanya

It'd be great to fix this universally in the kernel but it seems like
that patch is in discussion for now, and TBH I don't see any real
drawbacks to looping in mkfs - it would also solve the problem on any
old kernel w/o the block layer change.

I'd propose that we go ahead w/ the mkfs change, and if/when the kernel
handles this better, and it's reasonable to expect that we're running
on a kernel where it can be interrupted, we could remove the mkfs loop
at a later date if we wanted to.


  parent reply index

Thread overview: 12+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-11-28  6:21 Pavel Reichl
2019-11-30 22:01 ` Chaitanya Kulkarni
2019-12-02 16:40   ` Darrick J. Wong
2019-12-04 16:24   ` Eric Sandeen [this message]
2019-12-04 17:26     ` Christoph Hellwig
2019-12-04 17:32       ` Eric Sandeen
2019-12-04 17:42       ` Darrick J. Wong
2019-12-10  7:33         ` Chaitanya Kulkarni
2019-12-10 14:20           ` Eric Sandeen
2019-12-09 22:00 ` Eric Sandeen
2019-12-09 23:34   ` Darrick J. Wong
2019-12-10  0:49     ` Eric Sandeen

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