Re: Ideas on unified real-ro mount option across all filesystems
From: Carlos E. R. <hidden>
Date: 2015-12-17 14:58:33
-----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. --D
That's my understanding, too, but after some point in time, not initially. 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 also have the vague feeling that once (years ago) 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) iEYEARECAAYFAlZyzYkACgkQtTMYHG2NR9VDNwCfehM5NHMAgZuuzLf99kKulLKI AkAAnjt4mZngHZdH5v60T+P6tnnFzUiO =Pw+f -----END PGP SIGNATURE----- _______________________________________________ xfs mailing list xfs@oss.sgi.com http://oss.sgi.com/mailman/listinfo/xfs