gmirror and partitioning

[Gayn Winters]

> From: Nagy László Zsolt [mailto:nagylzs at freemail.hu] 
> Sent: Tuesday, May 16, 2006 10:41 AM
> To: gayn.winters at bristolsystems.com; freebsd-questions at freebsd.org
> Subject: Re: gmirror and partitioning
> 
> > Hi Laszlo,
> >
> > Well it looks like you've got gm0 up and running.  I assume you've
> > edited /etc/fstab so that it boots cleanly.  My first 
> thought is that
> > you need to zero ad8 to make sure gmirror isn't confused.  
> Try that (dd
> > if=/dev/zero of=/dev/ad8) at least for several blocks.  
> Then reboot and
> > post dmesg.
> >   
> 
>   Hello Gayns,
> 
> Good to see you again. :-)
> 
> backupserver# dd if=/dev/zero of=/dev/ad8 count=4096
> 4096+0 records in
> 4096+0 records out
> 2097152 bytes transferred in 0.686872 secs (3053192 bytes/sec)
> 
> < then I rebooted >
> 
> backupserver# gmirror insert gm0 /dev/ad8
> Provider ad8 too small.
> 
> Here are the important parts from my dmesg:
> 
> ...
> 
> atapci0: <ITE IT8212F UDMA133 controller> port 
> 0x9010-0x9017,0x9400-0x9403,0x9810-0x9817,0x9c00-0x9c03,0xa000-0xa00f 
> irq 22 at device 6.0 on pci4
> ata2: <ATA channel 0> on atapci0
> ata3: <ATA channel 1> on atapci0
> isab0: <PCI-ISA bridge> at device 31.0 on pci0
> isa0: <ISA bus> on isab0
> atapci1: <Intel ICH7 UDMA100 controller> port 
> 0x1f0-0x1f7,0x3f6,0x170-0x177,0x376,0xf000-0xf00f at device 
> 31.1 on pci0
> ata0: <ATA channel 0> on atapci1
> ata1: <ATA channel 1> on atapci1
> atapci2: <Intel ICH7 SATA300 controller> port 
> 0xd000-0xd007,0xd400-0xd403,0xd800-0xd807,0xdc00-0xdc03,0xe000-0xe00f 
> irq 19 at device 31.2 on pci0
> atapci2: failed to enable memory mapping!
> 
> ....
> 
> acd0: CDROM <GCR-8523B/1.01> at ata0-master PIO4
> ad8: 152626MB <SAMSUNG HD160JJ ZM100-33> at ata4-master SATA150
> ad10: 152627MB <SAMSUNG HD160JJ ZM100-33> at ata5-master SATA150
> SMP: AP CPU #1 Launched!
> GEOM_MIRROR: Device gm0 created (id=934763830).
> GEOM_MIRROR: Device gm0: provider ad10 detected.
> GEOM_MIRROR: Device gm0: provider ad10 activated.
> GEOM_MIRROR: Device gm0: provider mirror/gm0 launched.
> Trying to mount root from ufs:/dev/mirror/gm0s1a
> bge0: link state changed to UP
> 
> 
> This is really wreid! The hard disks are the same: SAMSUNG HD160JJ 
> ZM100-33. But one is bigger than the other. How could this happen? 
> Should I reinstall everything from the beginning? :-(
> 
> 
> Best,
> 
>    Laszlo

Sadly, yes; or buy a bigger second disk. You could do the install on the
smaller disk first, or you could make ad10s1 smaller.

-gayn

Bristol Systems Inc.
714/532-6776
www.bristolsystems.com