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Date:      Thu, 24 Sep 2009 07:05:15 -0500
From:      "Doug Poland" <doug@polands.org>
To:        "Adam Vande More" <amvandemore@gmail.com>
Cc:        Doug Poland <doug@polands.org>, questions@freebsd.org
Subject:   Re: panic: Journal overflow
Message-ID:  <477581fd1fd93eb97e1718180ba2cd05.squirrel@email.polands.org>
In-Reply-To: <6201873e0909231907h293bfe30g90cd989f12837d71@mail.gmail.com>
References:  <dbd846f8f1374490bd0876134a7d83e0.squirrel@email.polands.org> <6201873e0909231907h293bfe30g90cd989f12837d71@mail.gmail.com>

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On Wed, September 23, 2009 21:07, Adam Vande More wrote:
> On Wed, Sep 23, 2009 at 6:35 PM, Doug Poland <doug@polands.org> wrote:
>
>> Hello,
>>
>> I've got a 7.2-RELEASE (i386) box that has recently experienced
>> several panics when writing to a gjournaled partition.  On this
>> particular partition, the journal device is "mixed" in with the data
>> provider.  In both cases, I was trying to copy a 19GB file from an
>> external USB device (da1p16.journal) to the filesystem on a 3Ware
>> RAID-10 (da7p0.journal).
>>
>> This afternoon I saw...
>>
>> panic: Journal overflow (joffset=xxxxxxx active=yyyyyyyy
>> inactive=zzzzzz)
>> cpuid = 1
>> Uptime:
>> Physical memory: 1011 MB
>> Dumping 351MB
>>
>> Fatal trap 12: page fault while in kernel mode
>> cpuid = 0, apic id = 00
>> fault virtual address    = 0xea60
>> fault code               = supervisor write, page not present
>> instructor pointer       = 0x20: 0xc04715b6
>> stack pointer            = 0x28: 0xe6ab0320
>> frame pointer            = 0x28: 0xe6ab03bc
>> code segment             = base 0x0, limit 0xfffff, type 0x1b
>>                           DPL 0, pres 1, def32 1, gran 1
>> processor eflags         = interrupt enabled, resume, 10PL = 0
>> current process          = 48 (gjournal da0p7)
>> trap number              = 12
>>
>> Does this mean my journal is not big enough for the amount of
>> data I'm trying to push through?
>
>
> No, it's kinda like the journal is a is a buffer and you overflowed
> it.  You can address this by two methods:
>
> 1)  slow the rate of transfer
> 2)  make a bigger journal
>
>> Any suggestions on how to resolve this?
>>
>
> http://www.freebsd.org/doc/en_US.ISO8859-1/articles/gjournal-desktop/understanding-journaling.html
>
>
Well, that's what I was afraid of.  Looks like a training opportunity
to remove and re-implement journaling on an existing partition, after
backups, of course.  Thanks for your help.



-- 
Regards,
Doug




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