gmirror on different disks

[Grzegorz Danecki]

Hello everybody!

I'm just wondering, I had gmirror with two disks:

Master:  ad0 <ST3160815AS/4.AAB> Serial ATA II
Master:  ad2 <ST3160815AS/4.AAB> Serial ATA II

unfortunately ad0 failed today, leaving me with degraded array and ad0
offline.

I did

# gmirror forget gm0, then shutdown, ad0 was replaced with:

ad0: 152626MB <Seagate ST3160815AS 3.AAD> at ata0-master SATA300

with different firmware I think.

Then gmirror insert gm0 /dev/ad0

(...)
Jul 31 09:55:46 julia kernel: GEOM_MIRROR: Device gm0: rebuilding provider
ad0 finished.
Jul 31 09:55:46 julia kernel: GEOM_MIRROR: Device gm0: provider ad0
activated.

But the disk is a little bit smaller:

1. Name: mirror/gm0
   Mediasize: 160040803328 (149G)
   Sectorsize: 512
   Mode: r5w5e6
Consumers:
1. Name: ad2
   Mediasize: 160041885696 (149G)
   Sectorsize: 512
   Mode: r1w1e1
   State: ACTIVE
   Priority: 0
   Flags: DIRTY
   GenID: 1
   SyncID: 1
   ID: 3791030614
2. Name: ad0
   Mediasize: 160040803840 (149G)
   Sectorsize: 512
   Mode: r1w1e1
   State: ACTIVE
   Priority: 0
   Flags: DIRTY
   GenID: 1
   SyncID: 1
   ID: 2477089776

# gmirror status
      Name    Status  Components
mirror/gm0  COMPLETE  ad2
                      ad0

so, it looks fine.

Can I expect any problems now because of different sizes? Any problems when
RAID will be almost full?
I mean - should I make the RAID once again with exactly the same drives, or
can I leave it as it is right now?

Thanks in advance!

-- 
Grzegorz Danecki