Date: Fri, 26 Oct 2007 00:02:40 +0200 From: "Mario Pranjic" <mario.pranjic@gmail.com> To: freebsd-geom@freebsd.org Subject: gmirror weird behaviour Message-ID: <bada623c0710251502r4bd5d52dsdee75a6572adfb37@mail.gmail.com>
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Hi!
I have a system with 2 250 GB disks in mirror:
[root@haerbe ~]# gmirror status
Name Status Components
mirror/gmo COMPLETE ad0
ad2
system info:
FreeBSD haerbe.net 6.2-RELEASE-p7 FreeBSD 6.2-RELEASE-p7 #0: Wed Sep 5
06:24:11 CEST 2007 root@haerbe.net:/usr/obj/usr/src/sys/HAERBE i386
At some point ad0 disk was detached from the system:
Oct 25 06:43:10 haerbe ad0: FAILURE - device detached
Oct 25 06:43:10 haerbe subdisk0: detached
Oct 25 06:43:10 haerbe ad0: detached
Oct 25 06:43:10 haerbe GEOM_MIRROR: Device gmo: provider ad0 disconnected.
Oct 25 06:43:10 haerbe g_vfs_done():mirror/gmos2e[READ(offset=10598187008,
length=16384)]error = 6
Oct 25 06:43:10 haerbe g_vfs_done():mirror/gmos2e[READ(offset=30252744704,
length=16384)]error = 6
Mirror status:
[root@haerbe /www/_backups/hrbwiki/2007-10-22]# gmirror status
Name Status Components
mirror/gmo DEGRADED ad2
[root@haerbe /www/_backups/hrbwiki/2007-10-22]# gmirror list
Geom name: gmo
State: DEGRADED
Components: 2
Balance: round-robin
Slice: 4096
Flags: NONE
GenID: 0
SyncID: 2
ID: 3221909623
Providers:
1. Name: mirror/gmo
Mediasize: 250059349504 (233G)
Sectorsize: 512
Mode: r8w8e10
Consumers:
1. Name: ad2
Mediasize: 250059350016 (233G)
Sectorsize: 512
Mode: r1w1e1
State: ACTIVE
Priority: 0
Flags: NONE
GenID: 0
SyncID: 2
ID: 1951693847
I cleaned the mirror:
[root@haerbe]# gmirror forget gmo
[root@haerbe ~]# gmirror status
Name Status Components
mirror/gmo COMPLETE ad2
After reboot the system is aware of both disks:
ad0: 238475MB <Seagate ST3250820A 3.AAE> at ata0-master UDMA100
ad2: 238475MB <Seagate ST3250820A 3.AAE> at ata1-master UDMA100
but after that:
GEOM_MIRROR: Cannot add disk ad2 to gmo (error=22).
Root mount waiting for: GMIRROR
Root mount waiting for: GMIRROR
Root mount waiting for: GMIRROR
GEOM_MIRROR: Force device gmo start due to timeout.
GEOM_MIRROR: Device gmo: provider ad0 activated.
GEOM_MIRROR: Device gmo: provider mirror/gmo launched.
And the system rebooted with ad0 in mirror and not ad2!
[root@haerbe ~]# gmirror list
Geom name: gmo
State: DEGRADED
Components: 2
Balance: round-robin
Slice: 4096
Flags: NONE
GenID: 0
SyncID: 2
ID: 3221909623
Providers:
1. Name: mirror/gmo
Mediasize: 250059349504 (233G)
Sectorsize: 512
Mode: r8w8e10
Consumers:
1. Name: ad0
Mediasize: 250059350016 (233G)
Sectorsize: 512
Mode: r1w1e1
State: ACTIVE
Priority: 0
Flags: DIRTY
GenID: 0
SyncID: 2
ID: 2195860303
[root@haerbe ~]# gmirror status
Name Status Components
mirror/gmo DEGRADED ad0
Now I synced mirror again successfuly but this is weird. It should not be
happening.
Any ideas what is going on?
Thnx!
--
Mario.
http://keeper.sharanet.org/
http://keeper.haerbe.net/
http://keeper.nymphomatic.org/
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