Hi all,
I created mirror on top of the partitions on two SSDs.
ada1p2 and ada2p2 are mirrored.
I did this on testing system and then I tried to stop the mirror, so I
can move the disks from one running system and put them in to the
another machine.
After I use command "gmirror stop", the mirror is immediately started
again with GPT names instead of device nodes. After next "gmirror stop",
the mirror is swapped again - the one with GPT names is stopped and new
with device names is started.
# gmirror status
Name Status Components
mirror/gm1ssdp2 COMPLETE ada1p2 (ACTIVE)
ada2p2 (ACTIVE)
# gmirror stop -v gm1ssdp2
Done.
# gmirror status
Name Status Components
mirror/gm1ssdp2 COMPLETE gpt/ssd1db (ACTIVE)
gpt/ssd0db (ACTIVE)
# gmirror stop -v gm1ssdp2
Done.
# gmirror status
Name Status Components
mirror/gm1ssdp2 COMPLETE ada2p2 (ACTIVE)
ada1p2 (ACTIVE)
This is how it looks in a log
Nov 22 18:36:19 sm kernel: GEOM_MIRROR: Device gm1ssdp2: provider
mirror/gm1ssdp2 destroyed.
Nov 22 18:36:19 sm kernel: GEOM_MIRROR: Device gm1ssdp2 destroyed.
Nov 22 18:36:19 sm kernel: GEOM_MIRROR: Device mirror/gm1ssdp2 launched
(2/2).
Nov 22 18:36:47 sm kernel: GEOM_MIRROR: Device gm1ssdp2: provider
mirror/gm1ssdp2 destroyed.
Nov 22 18:36:47 sm kernel: GEOM_MIRROR: Device gm1ssdp2 destroyed.
Nov 22 18:36:47 sm kernel: GEOM_MIRROR: Device mirror/gm1ssdp2 launched
(2/2).
Nov 22 18:37:18 sm kernel: GEOM_MIRROR: Device gm1ssdp2: provider
mirror/gm1ssdp2 destroyed.
Nov 22 18:37:18 sm kernel: GEOM_MIRROR: Device gm1ssdp2 destroyed.
Nov 22 18:37:18 sm kernel: GEOM_MIRROR: Device mirror/gm1ssdp2 launched
(2/2).
Is there any way to stop GEOM mirror to re-taste providers and start
mirror again?
The machine is FreeBSD 9.2-RELEASE amd64 GENERIC
SSDs were partitionad like this:
# gpart create -s gpt ada2
# gpart add -t freebsd-ufs -l ssd1db -a 1m -b 1m -s 100g -i 2 ada2
ada2p2 added
Resulting in
# gpart show -p | sed -n -E '/ada[12]/,/^$/p'
=> 34 250069613 ada1 GPT (119G)
34 2014 - free - (1M)
2048 209715200 ada1p2 freebsd-ufs (100G)
209717248 40352399 - free - (19G)
=> 34 250069613 ada2 GPT (119G)
34 2014 - free - (1M)
2048 209715200 ada2p2 freebsd-ufs (100G)
209717248 40352399 - free - (19G)
And then mirror was created
# gmirror label -v -b load gm1ssdp2 ada1p2 ada2p2
Metadata value stored on ada1p2.
Metadata value stored on ada2p2.
Done.
Miroslav Lachman
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