[gentoo-user] Message at bootup about superblock last write time

[gentoo-user] Message at bootup about superblock last write time

[Walter Dnes]

  A while ago, I was troubleshooting serial port modem/ppconfig
problems, and I did a lot of recompiles and reboots.  It seems that
every time my system reboots, I get the following message...

 * Checking root filesystem ...
/dev/hda1: Superblock last write time is in the future.  FIXED.
/dev/hda1: clean, 6975/160960 files, 32843/307235 blocks      [ ok ]
 * Remounting root filesystem read/write ...                  [ ok ]

  Despite the message, I haven't encountered any problems.  I'm running
an 1999 Dell 450mhz PIII into the ground, but it refuses to die.  Sort
of like "a watched kettle never boils", actually "a backed-up harddrive
never crashes".  Here are the harddrive-related entries of /etc/fstab

/dev/hda1             /             ext3          noatime      0 1
/dev/hda5             none          swap          sw           0 0
/dev/hda6             /home         ext3          noatime      0 0
/home/bindmounts/var  /var          auto          bind,noatime 0 0
/home/bindmounts/usr  /usr          auto          bind,noatime 0 0
/home/bindmounts/tmp  /tmp          auto          bind,noatime 0 0
/dev/hdd              /mnt/cdrom    iso9660       noauto,ro    0 0
/dev/hdc              /mnt/dvd      auto          noauto,ro    0 0

-- 
Walter Dnes <waltdnes@waltdnes.org> In linux /sbin/init is Job #1
Q. Mr. Ghandi, what do you think of Microsoft security?
A. I think it would be a good idea.
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[gentoo-user] Re: Message at bootup about superblock last write time

[»Q«]

In <news:20070604232557.GA4548@waltdnes.org>,
"Walter Dnes" <waltdnes@waltdnes.org> wrote:

> It seems that
> every time my system reboots, I get the following message...
> 
>  * Checking root filesystem ...
> /dev/hda1: Superblock last write time is in the future.  FIXED.

I get this also.  I've always thought it's because my system time is
local instead of UTC.

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»Q«

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Re: [gentoo-user] Re: Message at bootup about superblock last write time

[Ken]

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»Q« wrote:
> In <news:20070604232557.GA4548@waltdnes.org>,
> "Walter Dnes" <waltdnes@waltdnes.org> wrote:
> 
>> It seems that
>> every time my system reboots, I get the following message...
>>
>>  * Checking root filesystem ...
>> /dev/hda1: Superblock last write time is in the future.  FIXED.
> 
> I get this also.  I've always thought it's because my system time is
> local instead of UTC.
> 
Sounds like clock skew. Do you use anything like ntp to set the time
automatically?
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[gentoo-user] Re: Message at bootup about superblock last write time

[»Q«]

In <news:4664D2E0.5000200@gmail.com>,
Ken <ken69267@gmail.com> wrote:

> »Q« wrote:
> > In <news:20070604232557.GA4548@waltdnes.org>,
> > "Walter Dnes" <waltdnes@waltdnes.org> wrote:
> > 
> >> It seems that
> >> every time my system reboots, I get the following message...
> >>
> >>  * Checking root filesystem ...
> >> /dev/hda1: Superblock last write time is in the future.  FIXED.
> > 
> > I get this also.  I've always thought it's because my system time is
> > local instead of UTC.
> > 
> Sounds like clock skew. Do you use anything like ntp to set the time
> automatically?

Yeah, I use net-misc/getdate as a daily cron job to set the time, with
the -adjust option.  It causes the kernel to slowly adjust the time, so
the clock shouldn't have any jumps.

I based my guess that using local time causes it on the fact that the
system clock is set using the hardware clock (local) a few seconds
after the Superblock last write time is fixed during boot.  And it's my
impression that if I wait a few hours before booting (my offset from
UTC is -5) no problem with the Superblock write time is detected.  I
say 'impression' because I haven't paid close attention to that.

But I'm just guessing;  I don't mean to hijack Walter's thread.

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»Q«

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Re: [gentoo-user] Re: Message at bootup about superblock last write time

[Randy Barlow]

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»Q« wrote:
> I based my guess that using local time causes it on the fact that the
> system clock is set using the hardware clock (local) a few seconds
> after the Superblock last write time is fixed during boot.  And it's my
> impression that if I wait a few hours before booting (my offset from
> UTC is -5) no problem with the Superblock write time is detected.  I
> say 'impression' because I haven't paid close attention to that.
> 
> But I'm just guessing;  I don't mean to hijack Walter's thread.

I've experienced this as well when using a local clock.  I no longer do
that as I no longer dual boot, and if you aren't dual booting with that
evil OS, then you should use clock=UTC and this problem will go right
away.  Not sure if it's fixable with clock=local though...

- --
Randy Barlow
http://electronsweatshop.com

But you are a chosen race, a royal priesthood, a holy nation, a people
for his own possession, that you may proclaim the excellencies of him
who called you out of darkness into his marvelous light. Once you were
not a people, but now you are God's people; once you had not received
mercy, but now you have received mercy. ~1 Peter 2:9-10


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Re: [gentoo-user] Message at bootup about superblock last write time

[Dan Farrell]

On Mon, 4 Jun 2007 19:25:57 -0400
"Walter Dnes" <waltdnes@waltdnes.org> wrote:

>   Despite the message, I haven't encountered any problems.  I'm
> running an 1999 Dell 450mhz PIII into the ground, but it refuses to
> die.  Sort of like "a watched kettle never boils", actually "a
> backed-up harddrive never crashes".  Here are the harddrive-related
> entries of /etc/fstab
> 
> /dev/hda1             /             ext3    

Looks like you should sync your system clock to your hardware clock.  I
assume that your system clock is correct, but by default gentoo doesn't
sync up the Hardware clock to it.  Look in /etc/conf.d/clock.
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Re: [gentoo-user] Message at bootup about superblock last write time

[Allan Gottlieb]

At Mon, 04 Jun 2007 19:25:57 -0400 Walter Dnes <waltdnes@waltdnes.org> wrote:

>   A while ago, I was troubleshooting serial port modem/ppconfig
> problems, and I did a lot of recompiles and reboots.  It seems that
> every time my system reboots, I get the following message...
>
>  * Checking root filesystem ...
> /dev/hda1: Superblock last write time is in the future.  FIXED.
> /dev/hda1: clean, 6975/160960 files, 32843/307235 blocks      [ ok ]
>  * Remounting root filesystem read/write ...                  [ ok ]

http://bugs.gentoo.org/show_bug.cgi?id=142850

allan
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Re: [gentoo-user] Message at bootup about superblock last write time

[Walter Dnes]

On Tue, Jun 05, 2007 at 01:24:40PM -0400, Allan Gottlieb wrote
> At Mon, 04 Jun 2007 19:25:57 -0400 Walter Dnes <waltdnes@waltdnes.org> wrote:
> 
> >  * Checking root filesystem ...
> > /dev/hda1: Superblock last write time is in the future.  FIXED.
> > /dev/hda1: clean, 6975/160960 files, 32843/307235 blocks      [ ok ]
> >  * Remounting root filesystem read/write ...                  [ ok ]
> 
> http://bugs.gentoo.org/show_bug.cgi?id=142850

  Thanks.  I've been busy with buying-a-new-home paperwork the past few
few days.  At least I know now that it's not a problem with my system.

-- 
Walter Dnes <waltdnes@waltdnes.org> In linux /sbin/init is Job #1
Q. Mr. Ghandi, what do you think of Microsoft security?
A. I think it would be a good idea.
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