From: Andrea Arcangeli <andrea@suse.de>
To: Chris Mason <mason@suse.com>
Cc: Rik van Riel <riel@conectiva.com.br>,
linux-lvm@msede.com, marcelo@conectiva.com.br,
"Stephen C. Tweedie" <sct@redhat.com>
Subject: [linux-lvm] Re: LVM 2.2 snapshot bug
Date: Wed, 8 Nov 2000 18:04:03 +0100 [thread overview]
Message-ID: <20001108180403.E3650@inspiron.suse.de> (raw)
In-Reply-To: <898720000.973701988@coffee>; from mason@suse.com on Wed, Nov 08, 2000 at 11:46:28AM -0500
On Wed, Nov 08, 2000 at 11:46:28AM -0500, Chris Mason wrote:
> But, if is_read_only(dev) returns 0,[..]
That is the case for a read only floppy disk and for a LVM snapshot but
in reality both generates I/O errors after calling ll_rw_block(WRITE)
because in reality they are both read only.
> [..] reiserfs tries to update the journal
> header block on mount. [..]
So it does the same thing of ext3, I remeber we also discussed that design
decision in the past and I remeber there are good reasons for that.
> Heinz and found the bug where is_read_only returns 0 for the snapshot
Oh, I didn't know you were just aware of it.
> volume while we were working on the snapshot api for journaled filesystems,
> so this code got a lot of testing.
Ok.
Andrea
next prev parent reply other threads:[~2000-11-08 17:04 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2000-11-07 10:55 [linux-lvm] LVM 2.2 snapshot bug Rik van Riel
2000-11-07 12:16 ` Heinz J. Mauelshagen
2000-11-07 14:42 ` Rik van Riel
2000-11-07 13:21 ` [linux-lvm] " Andrea Arcangeli
2000-11-07 14:56 ` Rik van Riel
2000-11-07 16:45 ` Andrea Arcangeli
2000-11-07 17:04 ` Stephen C. Tweedie
2000-11-07 19:51 ` Andrea Arcangeli
2000-11-07 20:36 ` Andreas Dilger
2000-11-08 11:11 ` Stephen C. Tweedie
2000-11-08 16:16 ` Andrea Arcangeli
2000-11-08 19:08 ` Andreas Dilger
2000-11-08 11:10 ` Stephen C. Tweedie
2000-11-08 16:53 ` Andrea Arcangeli
2000-11-07 23:04 ` Rik van Riel
2000-11-08 7:55 ` Heinz Mauelshagen
2000-11-08 13:44 ` Rik van Riel
2000-11-08 16:31 ` Andrea Arcangeli
[not found] ` <898720000.973701988@coffee>
2000-11-08 17:04 ` Andrea Arcangeli [this message]
2000-11-08 19:11 ` Andreas Dilger
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