From: Jan Kara <jack@suse.cz>
To: Prashant Shah <pshah.mumbai@gmail.com>
Cc: Jan Kara <jack@suse.cz>, Eric Sandeen <sandeen@redhat.com>,
linux-ext4@vger.kernel.org
Subject: Re: freeze_bdev hangs
Date: Tue, 9 Oct 2012 23:49:15 +0200 [thread overview]
Message-ID: <20121009214915.GD27882@quack.suse.cz> (raw)
In-Reply-To: <CAD6i1fKpWZVbL4gS1ui7GvF81S+SAduckXeWoApwH=KgKuiU9g@mail.gmail.com>
On Mon 08-10-12 22:05:38, Prashant Shah wrote:
> Hi,
>
> On Mon, Oct 8, 2012 at 9:49 PM, Jan Kara <jack@suse.cz> wrote:
> > And what tool are you using for monitoring?
>
> I am using printk(). A custom module that changes the make_request_fn
> of the block device to a custom callback. In the callback I am
> printing the request bio details and passing the bio back to the
> original make_request_fn.
OK. There are several ways how I could imagine you hit ino == 0. Either
someone is using direct IO or inode is a block device inode...
Honza
next prev parent reply other threads:[~2012-10-09 21:49 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-10-05 11:58 freeze_bdev hangs Prashant Shah
2012-10-05 17:33 ` Eric Sandeen
2012-10-08 7:43 ` Prashant Shah
2012-10-08 16:19 ` Jan Kara
2012-10-08 16:35 ` Prashant Shah
2012-10-09 21:49 ` Jan Kara [this message]
2012-10-12 16:08 ` Prashant Shah
2012-12-04 13:10 ` Prashant Shah
2012-10-08 18:21 ` Eric Sandeen
2012-10-08 18:48 ` Prashant Shah
2012-10-09 5:13 ` Prashant Shah
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