On Sun, Jul 13, 2003 at 10:24:15PM +0200, Heinz J . Mauelshagen wrote:
> On Sun, Jul 13, 2003 at 11:27:43AM -0700, Petro wrote:
> > On Sun, Jul 13, 2003 at 12:11:51PM +0200, Heinz J . Mauelshagen wrote:
> > > Petro,
> > > what's the lvcreate command line ?
> >
> > lvcreate -L10G -n snap000 -s /dev/vg0
> Looks like another vmalloc bug :(
You mean like this one:
Jul 13 13:11:55 back03-gig kernel: kernel BUG at vmalloc.c:236!
Jul 13 13:11:55 back03-gig kernel: invalid operand: 0000
Jul 13 13:11:55 back03-gig kernel: CPU: 2
Jul 13 13:11:55 back03-gig kernel: EIP: 0010:[__vmalloc+53/512]
Not tainted
> Kernel memory for snapshot exception tables gets allocated with vmalloc()
> which shouldn't fail (presumably there's enough memory free,
> which I assume in your case).
Freshly rebooted machine with 4 gig of physical memory, and nothing else
running.
> > > (highmem may cause problems if you use the snapsho9t, creation should
> > > work fine)
> > Is this highmem problem across all 2.4 kernels, or just 2.4.19+? The
> > first report I've seen of it is with a 2.4.19 kernel.
> Didn't retest with kernel 2.4.21 yet.
> The ones before had it AFAIK.
Starting when? the dawn of time?
Also, would switching to LVM2 sidestep this issue?
> Regards,
> Heinz -- The LVM Guy --
>
> >
> > >
> > > Regards,
> > > Heinz -- The LVM Guy --
> > >
> > > On Fri, Jul 11, 2003 at 05:01:27PM -0700, Petro wrote:
> > > > Hello again.
> > > >
> > > > I'm having a problem with LVM, and I'm really, really hoping you won't
> > > > tell me it's because of:
> > > >
> > > > # CONFIG_NOHIGHMEM is not set
> > > > CONFIG_HIGHMEM4G=y
> > > > # CONFIG_HIGHMEM64G is not set
> > > > CONFIG_HIGHMEM=y
> > > > CONFIG_HIGHIO=y
> > > >
> > > > (linux kernel 2.4.21, lvm 1.0.7 stuff installed)
> > > >
> > > > I've got 8 boxes with 4 gig of memory, and 6 200 gig drives in a raid 0
> > > > setup, and I need to use LVM+Snapshots.
> > > >
> > > > I can setup and create a 1.09T logical volume, but when I go to create a
> > > > snaphot, I get:
> > > >
> > > > lvcreate -- INFO: using default snapshot chunk size of 64 KB for "/dev/vg0/test"
> > > > lvcreate -- ERROR "Cannot allocate memory" creating VGDA for "/dev/vg0/test" in kernel
> > > >
> > > > Now, in reading past posts there is some talk of how having "high
> > > > memory" turned on will cause problems with snapshots.
> > > >
> > > > The problem is that on these machines I *need* 4 gig of memory, and I
> > > > *need* snapshots.
> > > >
> > > > Help?
> > > >
> > > >
> > > > --- Physical volume ---
> > > > PV Name /dev/sda
> > > > VG Name vg0
> > > > PV Size 1.09 TB [2344319232 secs] / NOT usable 32.31 MB [LVM: 267 KB]
> > > > PV# 1
> > > > PV Status available
> > > > Allocatable yes
> > > > Cur LV 1
> > > > PE Size (KByte) 32768
> > > > Total PE 35770
> > > > Free PE 570
> > > > Allocated PE 35200
> > > > PV UUID LyEPH1-pq2I-D022-v5c9-98rp-n7Ff-4LnNKL
> > > >
> > > > --- Volume group ---
> > > > VG Name vg0
> > > > VG Access read/write
> > > > VG Status available/resizable
> > > > VG # 0
> > > > MAX LV 256
> > > > Cur LV 1
> > > > Open LV 1
> > > > MAX LV Size 2 TB
> > > > Max PV 256
> > > > Cur PV 1
> > > > Act PV 1
> > > > VG Size 1.09 TB
> > > > PE Size 32 MB
> > > > Total PE 35770
> > > > Alloc PE / Size 36032 / 1.10 TB
> > > > Free PE / Size 4294967034 / 131071.99 TB
> > > > VG UUID KciSkB-xbr8-22RM-zmke-6A69-6BEM-xLWMzv
> > > >
> > > > --- Logical volume ---
> > > > LV Name /dev/vg0/lv0
> > > > VG Name vg0
> > > > LV Write Access read/write
> > > > LV Status available
> > > > LV # 1
> > > > # open 1
> > > > LV Size 1.07 TB
> > > > Current LE 35200
> > > > Allocated LE 35200
> > > > Allocation next free
> > > > Read ahead sectors 1024
> > > > Block device 58:0
> > > >
> > > >
> > > > procs memory swap io system cpu
> > > > r b w swpd free buff cache si so bi bo in cs us sy id
> > > > 0 0 0 0 3949704 1648 26104 0 0 3 2 27 5 0 0 100
> > > >
> > > >
> > > > --
> > > > "On two occasions, I have been asked [by members of Parliament], 'Pray,
> > > > Mr. Babbage, if you put into the machine wrong figures, will the right
> > > > answers come out?' I am not able to rightly apprehend the kind of confusion
> > > > of ideas that could provoke such a question." -- Charles Babbage
> > > >
> > > > _______________________________________________
> > > > linux-lvm mailing list
> > > > linux-lvm@sistina.com
> > > > http://lists.sistina.com/mailman/listinfo/linux-lvm
> > > > read the LVM HOW-TO at http://tldp.org/HOWTO/LVM-HOWTO/
> > >
> > > *** Software bugs are stupid.
> > > Nevertheless it needs not so stupid people to solve them ***
> > >
> > > _______________________________________________
> > > linux-lvm mailing list
> > > linux-lvm@sistina.com
> > > http://lists.sistina.com/mailman/listinfo/linux-lvm
> > > read the LVM HOW-TO at http://tldp.org/HOWTO/LVM-HOWTO/
> >
> > --
> > "On two occasions, I have been asked [by members of Parliament], 'Pray,
> > Mr. Babbage, if you put into the machine wrong figures, will the right
> > answers come out?' I am not able to rightly apprehend the kind of confusion
> > of ideas that could provoke such a question." -- Charles Babbage
> >
> > _______________________________________________
> > linux-lvm mailing list
> > linux-lvm@sistina.com
> > http://lists.sistina.com/mailman/listinfo/linux-lvm
> > read the LVM HOW-TO at http://tldp.org/HOWTO/LVM-HOWTO/
>
> *** Software bugs are stupid.
> Nevertheless it needs not so stupid people to solve them ***
>
> =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
>
> Heinz Mauelshagen Sistina Software Inc.
> Senior Consultant/Developer Am Sonnenhang 11
> 56242 Marienrachdorf
> Germany
> Mauelshagen@Sistina.com +49 2626 141200
> FAX 924446
> =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
>
> _______________________________________________
> linux-lvm mailing list
> linux-lvm@sistina.com
> http://lists.sistina.com/mailman/listinfo/linux-lvm
> read the LVM HOW-TO at http://tldp.org/HOWTO/LVM-HOWTO/
--
"On two occasions, I have been asked [by members of Parliament], 'Pray,
Mr. Babbage, if you put into the machine wrong figures, will the right
answers come out?' I am not able to rightly apprehend the kind of confusion
of ideas that could provoke such a question." -- Charles Babbage
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