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Date: Mon, 25 Apr 2011 15:18:29 -0500 From: Eric Sandeen <sandeen@...hat.com> To: Zhao Cai <zhaocai@...com> CC: Amir Goldstein <amir73il@...il.com>, ext4 mailing list <linux-ext4@...r.kernel.org> Subject: Re: ext4_put_super is not called during system shutdown or restart On 4/25/11 3:07 PM, Zhao Cai wrote: > In that case, how to make sure all the jbd2 transactions are fininshed before reboot? is it ext4_freeze and jbd2_journal_flush? the remount readonly path should do this, I think. ext4_remount ext4_mark_recovery_complete jbd2_journal_lock_updates jbd2_journal_flush -Eric > Thanks. > -- > All the best, > > Zhao Cai > > > On Apr 25, 2011, at 12:12 PM, Zhao Cai wrote: > >> On Apr 25, 2011, at 12:10 PM, Eric Sandeen wrote: >> >>> On 4/25/11 11:05 AM, Zhao Cai wrote: >>>> Sorry, my mistake. It happens only when ext4 is the root file system. >>> >>> that makes sense, since root is never actually unmounted; it just goes to readonly. >>> >>> -Eric >> >> Thanks. That means it is designed to be like this! >> >>>> -Zhao >>>> >>>> >>>> On Apr 25, 2011, at 11:02 AM, Amir Goldstein wrote: >>>> >>>>> On Monday, April 25, 2011, Eric Sandeen <sandeen@...hat.com> wrote: >>>>>> On 4/24/11 11:12 PM, Zhao Cai wrote: >>>>>>> I would appreciate if anyone can give me an answer. Is it designed to >>>>>>> be like this? >>>>>>> >>>>>>> Detailed situation: The system is ubuntu 11.04 installed in VMware. I >>>>>>> notice that ext4_put_super() is called when I unmount a non-root ext4 >>>>>>> partition. But it is not when I restart or shutdown the system. >>>>>> >>>>>> Even for a non-root filesystem? >>>>>> >>>>>> I don't know if ubuntu does anything special, but I would expect that during a system shutdown, non-root filesystems would be unmounted, and you'd get put_super called. Unless the fs is busy and it can't be unmounted for some reason... >>>>> >>>>> This strangely reminds me of my report that xfstests sometimes fails >>>>> to umount on Ubuntu 10.10. >>>>> But I could be just trying to hold on to the hope of somebody else >>>>> solving my problems... >>>>> >>>>>> >>>>>> -Eric >>>>>> >>>>>>> Thanks。 >>>>>>> >>>>>>> -- All the best, >>>>>>> >>>>>>> Zhao Cai >>>>>>> >>>>>>> >>>>>>> -- To unsubscribe from this list: send the line "unsubscribe >>>>>>> linux-ext4" in the body of a message to majordomo@...r.kernel.org >>>>>>> More majordomo info at http://vger.kernel.org/majordomo-info.html >>>>>> >>>>>> -- >>>>>> To unsubscribe from this list: send the line "unsubscribe linux-ext4" in >>>>>> the body of a message to majordomo@...r.kernel.org >>>>>> More majordomo info at http://vger.kernel.org/majordomo-info.html >>>>>> >>>> >>> >>> -- >>> To unsubscribe from this list: send the line "unsubscribe linux-ext4" in >>> the body of a message to majordomo@...r.kernel.org >>> More majordomo info at http://vger.kernel.org/majordomo-info.html >> >> -- >> To unsubscribe from this list: send the line "unsubscribe linux-ext4" in >> the body of a message to majordomo@...r.kernel.org >> More majordomo info at http://vger.kernel.org/majordomo-info.html > -- To unsubscribe from this list: send the line "unsubscribe linux-ext4" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
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