Re: Journaling: Surviving or allowing unclean shutdown?

[Stefan Traby <stefan@hello-penguin.com>]

On Thu, Jan 04, 2001 at 07:21:04PM +0000, Stephen C. Tweedie wrote:

> ext3 does the recovery automatically during mount(8), so user space
> will never see an unrecovered filesystem.  (There are filesystem flags
> set by the journal code to make sure that an unrecovered filesystem
> never gets mounted by a kernel which doesn't know how to do the
> appropriate recovery.)

I did not follow the ext3 development recently, how did you solve
the "read-only mount(2) (optionally on write protected media)" issue ?

Does the mount fail, or does the code virtually replays (without writing)
only ?

I think any other action (only replaying on rw mount and presenting
a broken filesystem on ro) is quite fatal, at least if I think of
a replay on -remount,rw :)

Also, an unconditional hidden replay even if "ro" is specified is not nice.

This is especially critical on root filesystem, because there is IMHO
no way to specify mount arguments to the "/" mount, except ro/rw.

-- 

  ciao - 
    Stefan

"     ( cd /lib ; ln -s libBrokenLocale-2.2.so libNiedersachsen.so )     "
    
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