Robin Hill wrote:
On Tue Apr 30, 2013 at 03:17:30PM +0200, Roberto Nunnari wrote:
- grow the arrays to 4 members (this avoids any loss of redundancy)
now the next step.. that's a raid1 array.. is it possible to grow the
arrays to 4 members?
Yes, there's no problem with running RAID1 arrays with more than two
mirrors (with md anyway) - they're all identical so it doesn't really
make any difference how many you have.
Cheers,
Robin
ok.. it's rebuilding.. I started with md0.. I'll wait it finishes and
then do md1(8GB) and after that, md2(almost 2TB).. for now it seems to
be going well, isn't it?
# mdadm -D /dev/md0
/dev/md0:
Version : 00.90
Creation Time : Fri Apr 22 08:20:49 2011
Raid Level : raid1
Array Size : 48827328 (46.57 GiB 50.00 GB)
Used Dev Size : 48827328 (46.57 GiB 50.00 GB)
Raid Devices : 4
Total Devices : 4
Preferred Minor : 0
Persistence : Superblock is persistent
Update Time : Tue Apr 30 16:01:40 2013
State : clean, degraded, recovering
Active Devices : 2
Working Devices : 4
Failed Devices : 0
Spare Devices : 2
Rebuild Status : 15% complete
UUID : 1158db16:ee1fcafc:b6fab772:d376c644
Events : 0.964
Number Major Minor RaidDevice State
0 8 1 0 active sync /dev/sda1
1 8 33 1 active sync /dev/sdc1
4 8 49 2 spare rebuilding /dev/sdd1
5 8 17 3 spare rebuilding /dev/sdb1
Robi
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