Re: Ideas on unified real-ro mount option across all filesystems
From: Carlos E. R. <hidden>
Date: 2015-12-17 14:35:25
-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 On 2015-12-17 04:26, Darrick J. Wong wrote:
On Wed, Dec 16, 2015 at 09:15:59PM -0600, Eric Sandeen wrote:
quoted
I have always interpreted it as simply "no user changes to the filesystem," and that is clearly what the vfs does with the flag...That ("-o ro means no user changes") has always been my understanding too. You /want/ the FS to replay the journal on an RO mount so that regular FS operation picks up the committed transactions.
That's my understanding, too, but after some point in time. It was explained to me some years ago after I found out that a disk image mounted read only was modified. The trick was to make the image '-w'. I have the vague feeling that once I found a problem when a mount failed or crashed when the image was ro. Just a user view on this :-) - -- Cheers / Saludos, Carlos E. R. (from 13.1 x86_64 "Bottle" at Telcontar) -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.22 (GNU/Linux) iEYEARECAAYFAlZyyBsACgkQtTMYHG2NR9VDYACfRd6Zzd60JzX6LoW1F2K4fSai OJAAoJXgLlcrlFZy1U2MzCBaQ4cz0EmP =s8oq -----END PGP SIGNATURE----- _______________________________________________ xfs mailing list xfs@oss.sgi.com http://oss.sgi.com/mailman/listinfo/xfs