From: Neil Brown <neilb@suse.de>
To: Carl Cook <CACook@quantum-sci.com>
Cc: linux-raid@vger.kernel.org
Subject: Re: Is It Hopeless?
Date: Mon, 27 Dec 2010 07:33:30 +1100 [thread overview]
Message-ID: <20101227073330.6acb577a@notabene.brown> (raw)
In-Reply-To: <201012261219.41912.CACook@quantum-sci.com>
On Sun, 26 Dec 2010 12:19:41 -0800 Carl Cook <CACook@quantum-sci.com> wrote:
>
> My God, it didn't have the command fsck.jfs, so I reinstalled jfsutils. Now the array mounts.
>
> I don't understand it. I thought the JFS driver is in the kernel?
Like many parts of Linux, most of JFS is in the kernel, but some support
tools are separate. Most filesystems have a separate mkfs.$FSTYPE and
fsck.$FSTYPE. ALSA (sound subsystem) has alsamixer etc. md/RAID has mdadm,
nfs has nfs-utils etc etc. Each of these are primarily kernel subsystems,
but need user-space tools to configure and manage them.
But the important thing is that you have your data back, preparing you for a
Happy New Year!
NeilBrown
>
>
> On Sun 26 December 2010 12:11:56 Neil Brown wrote:
> > On Sun, 26 Dec 2010 10:19:55 -0800 Carl Cook <CACook@quantum-sci.com> wrote:
> >
> > > I went in to turn on my home theater system today, and found a blank screen. I rebooted and it would not mount /home, which is a 4TB RAID10 array with every movie and show I've recorded over the past two years. I try to mount it manually, and "wrong fs or bad superblock". The array is getting set up fine, but the filesystem seems to be destroyed.
> > >
> > > Unbelievable. This isn't supposed to happen. It happened once before when I wasn't using RAID, but that was the BTRFS filesystem and I blamed it for being pre-release. But now it's RAID10 with JFS.
> >
> > None of your logs show anything about jfs....
> >
> > What does
> > fsck.jfs /dev/md2
> > report?
> > What about
> > mount -t jfs /dev/md2 /home
> >
> > ??
> >
> > NeilBrown
> >
> >
> > >
> > > The only sign of trouble:
> > > Dec 25 16:14:56 cygnus shutdown[2180]: shutting down for system reboot
> > > Dec 25 16:14:58 cygnus kernel: [16607.840197] md: md2 stopped.
> > > Dec 25 16:14:58 cygnus kernel: [16607.840210] md: unbind<sdb3>
> > > Dec 25 16:14:58 cygnus kernel: [16607.852029] md: export_rdev(sdb3)
> > > Dec 25 16:14:58 cygnus kernel: [16607.852083] md: unbind<sdc3>
> > > Dec 25 16:14:58 cygnus kernel: [16607.864031] md: export_rdev(sdc3)
> > > Dec 25 16:14:58 cygnus kernel: [16607.864092] md2: detected capacity change from 1913403736064 to 0
> > > Dec 25 16:15:00 cygnus kernel: Kernel logging (proc) stopped.
> > >
> > > Reboot:
> > > Dec 25 16:15:48 cygnus kernel: [ 1.156657] Uniform CD-ROM driver Revision: 3.20
> > > Dec 25 16:15:48 cygnus kernel: [ 1.464298] md: raid10 personality registered for level 10
> > > Dec 25 16:15:48 cygnus kernel: [ 1.469307] md: md2 stopped.
> > > Dec 25 16:15:48 cygnus kernel: [ 1.470540] md: bind<sdc3>
> > > Dec 25 16:15:48 cygnus kernel: [ 1.470642] md: bind<sdb3>
> > > Dec 25 16:15:48 cygnus kernel: [ 1.471381] raid10: raid set md2 active with 2 out of 2 devices
> > > Dec 25 16:15:48 cygnus kernel: [ 1.476048] md2: bitmap initialized from disk: read 14/14 pags, set 0 bits
> > > Dec 25 16:15:48 cygnus kernel: [ 1.476050] created bitmap (223 pages) for device md2
> > > Dec 25 16:15:48 cygnus kernel: [ 1.488465] md2: detected capacity change from 0 to 1913403736064
> > > Dec 25 16:15:48 cygnus kernel: [ 1.488942] md2: unknown partition table
> > > Dec 25 16:15:48 cygnus kernel: [ 1.597375] PM: Starting manual resume from disk
> > > Dec 25 16:15:48 cygnus kernel: [ 1.650832] kjournald starting. Commit interval 5 seconds
> > > --
> > > To unsubscribe from this list: send the line "unsubscribe linux-raid" in
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> >
> >
> --
> To unsubscribe from this list: send the line "unsubscribe linux-raid" in
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next prev parent reply other threads:[~2010-12-26 20:33 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-12-26 18:19 Is It Hopeless? Carl Cook
2010-12-26 20:11 ` Neil Brown
2010-12-26 20:19 ` Carl Cook
2010-12-26 20:19 ` CoolCold
2010-12-26 20:33 ` Neil Brown [this message]
2010-12-26 21:14 ` Berkey B Walker
2010-12-27 0:06 ` Carl Cook
2010-12-27 4:45 ` Stan Hoeppner
2010-12-27 5:35 ` Phil Turmel
2010-12-27 13:10 ` Carl Cook
2010-12-27 15:04 ` Phil Turmel
2010-12-27 21:34 ` Brad Campbell
2010-12-27 16:37 ` Stan Hoeppner
2010-12-28 1:36 ` Berkey B Walker
2010-12-28 4:16 ` Carl Cook
2010-12-29 3:04 ` Stan Hoeppner
2010-12-29 5:34 ` Roman Mamedov
2011-01-04 20:03 ` Phillip Susi
2011-01-05 21:19 ` Leslie Rhorer
2011-01-05 14:45 ` Hank Barta
2011-01-05 23:07 ` Leslie Rhorer
2011-01-06 23:02 ` Berkey B Walker
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