Date: Sat, 12 Mar 2005 16:51:37 +0100 From: Andrea Venturoli <ml@netfence.it> To: freebsd-questions@freebsd.org Subject: gmirror rebuilds on every reboot Message-ID: <42331009.6050804@netfence.it>
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As per subject: I have a 5.3 box with two SATA drives and I using
gmirror to achieve RAID 1.
The problem is it started rebuilding the array *on every boot*.
From the logs:
Mar 12 16:39:16 robert kernel: ad4: 78167MB <Maxtor 6Y080M0/YAR511W0>
[158816/16/63] at ata2-master SATA150
Mar 12 16:39:16 robert kernel: ad6: 78167MB <Maxtor 6Y080M0/YAR511W0>
[158816/16/63] at ata3-master SATA150
Mar 12 16:39:16 robert kernel: GEOM_MIRROR: Device gm0 created
(id=2197339280).
Mar 12 16:39:16 robert kernel: GEOM_MIRROR: Device gm0: provider ad4
detected.
Mar 12 16:39:16 robert kernel: GEOM_MIRROR: Device gm0: provider ad6
detected.
Mar 12 16:39:16 robert kernel: GEOM_MIRROR: Device gm0: provider ad6
activated.
Mar 12 16:39:16 robert kernel: GEOM_MIRROR: Device gm0: provider
mirror/gm0 launched.
Mar 12 16:39:16 robert kernel: GEOM_MIRROR: Device gm0: rebuilding
provider ad4.
fdisk /dev/ad4 (same for /dev/ad6 or /dev/mirror/gm0) gives:
******* Working on device /dev/ad4 *******
parameters extracted from in-core disklabel are:
cylinders=158816 heads=16 sectors/track=63 (1008 blks/cyl)
Figures below won't work with BIOS for partitions not in cyl 1
parameters to be used for BIOS calculations are:
cylinders=158816 heads=16 sectors/track=63 (1008 blks/cyl)
Media sector size is 512
Warning: BIOS sector numbering starts with sector 1
Information from DOS bootblock is:
The data for partition 1 is:
sysid 165 (0xa5),(FreeBSD/NetBSD/386BSD)
start 63, size 160071597 (78159 Meg), flag 80 (active)
beg: cyl 0/ head 1/ sector 1;
end: cyl 747/ head 254/ sector 63
The data for partition 2 is:
<UNUSED>
The data for partition 3 is:
<UNUSED>
The data for partition 4 is:
<UNUSED>
bsdlabel /dev/mirror/gm0s1:
# /dev/mirror/gm0s1:
8 partitions:
# size offset fstype [fsize bsize bps/cpg]
a: 1048576 16 4.2BSD 2048 16384 8
b: 4194304 1048592 swap
c: 160071597 0 unused 0 0 # "raw" part,
don't edi
t
d: 41943040 5242896 4.2BSD 2048 16384 28552
(Yes, I left some space unused.)
Finally /etc/fstab:
# Device Mountpoint FStype Options Dump Pass#
/dev/mirror/gm0s1b none swap sw 0 0
/dev/mirror/gm0s1a / ufs rw 1 1
/dev/mirror/gm0s1d /usr ufs rw 2 2
/dev/acd0 /cdrom cd9660 ro,noauto 0 0
And I have swapoff="YES" in /etc/rc.conf.
I cannot think of any reason this might happen, but I'd appreciate any
hint to avoid that.
bye & Thanks
av.
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