I have a question about gmirror, I have read the how-to's:
Assuming my original drive is ad0 so I add a identical drive as ad2:
1) Do both drives have to be the same make/model or do they just have to be the same capacity?
2) for ad2, do I need to do the fdisk/disklabel/newfs on it or will it basically do a physical sector by sector copy of ad0?
3) what happens if I did:
[cmd=] fdisk -B -b /boot/boot0 ad0[/cmd]
[cmd=] bsdlabel -B ad0s1 [/cmd]
or should it actually be gm0 and gm0s1, does it update both
drives or would it be limited to ad0?
4) would there be any issues trying to mount ad2 slices as read-only just to make sure the data is there?
5) I've read that with 8.0-STABLE, load is supposed to be better than round robin, is there a way to switch from round robin to load assuming I started with:
do I simply just do
or do I have to
6) What recommend performance tweaks are there to maximize performance?
Thanks!
Assuming my original drive is ad0 so I add a identical drive as ad2:
1) Do both drives have to be the same make/model or do they just have to be the same capacity?
2) for ad2, do I need to do the fdisk/disklabel/newfs on it or will it basically do a physical sector by sector copy of ad0?
3) what happens if I did:
[cmd=] fdisk -B -b /boot/boot0 ad0[/cmd]
[cmd=] bsdlabel -B ad0s1 [/cmd]
or should it actually be gm0 and gm0s1, does it update both
drives or would it be limited to ad0?
4) would there be any issues trying to mount ad2 slices as read-only just to make sure the data is there?
5) I've read that with 8.0-STABLE, load is supposed to be better than round robin, is there a way to switch from round robin to load assuming I started with:
gmirror label -v -b round-robin gm0 /dev/ad0
do I simply just do
gmirror label -v -b load gm0 /dev/ad0
or do I have to
gmirror clear /dev/ad0
first but wouldn't that destroy all data in the mirror?6) What recommend performance tweaks are there to maximize performance?
Thanks!