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Date: Mon, 25 Apr 2011 16:43:01 -0400 From: Zhao Cai <zhaocai@...com> To: Eric Sandeen <sandeen@...hat.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 Apr 25, 2011, at 4:18 PM, Eric Sandeen wrote: > 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, Eric. I appreciate your very prompt help. That clarify my question. -Zhao >> >> >> >> 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 -- 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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