Joe Kelsey wrote:
I am having a real hard time with gmirror. I recently bought two new
400G SATA disks and I want to mirror them. I think I am following the
directions, but I am not sure.
I generally do the following steps:
edit /boot/loader.conf to add geom_mirror_load.
reboot into single-user
gmirror label -v -b round-robin gm0 ad4s1 ad6s1
bsdlabel -w mirror/gm0
bsdlabel -e mirror/gm0
newfs mirror/gm0a
When I attempt to perform the newfs, it generally goes through all of
the backup super blocks and hangs the system at the end of the newfs.
At that point, my only recourse is pushing the reset button. When the
system comes up, GEOM_MIRROR tries to rebuild one of the providers
(usually ad4s1), but never seems to succeed.
Anyway, the first problem I had was not having geom_mirror loaded.
The only solution seems to be adding the load to /boot/loader.conf.
None of the manual pages or handbook pages says anything about this
except when discusssing making your system disk mirrored. I am not
doing that.
So, after loading the mirror stuff, I regularly lock up the system by
trying to perform simple activities on the mirror. What do I need to
do differently?
Here are the relevant dmesg lines:
atapci0: <SiI 3512 SATA150 controller> port
0xa000-0xa007,0x9800-0x9803,0x9400-0x9407,0x9000-0x9003,0x8800-0x880f
mem 0xfba00000-0xfba001ff irq 18 at device 13.0 on pci0
ata2: <ATA channel 0> on atapci0
ata3: <ATA channel 1> on atapci0
ad4: 381554MB <Seagate ST3400620AS 3.AAC> at ata2-master SATA150
ad6: 381554MB <Seagate ST3400620AS 3.AAC> at ata3-master SATA150
OK. I did some more testing and found a bug in the SII3512 controller.
If I mount just one of the drives just as a single disk and attempt to
move a 250G drive over using tar, sometime during the copying the system
simply hangs. No errors, no messages, the system stops and my only
recourse is jto press the reset button.
For that reason, I have decided that the SII3512 is unreliable and will
replace it with a Promise controller, basically the cheapest one (TX2).
I hope it works better.
Thank you everyone for the links to other pages.
/Joe
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