Hi,
I would like to grow the RAID1.
- Raid1 size has about 50GB
- two HD partition (sda2, sdb2) have about 80GB+ (each)
I do:
# mdadm --grow /dev/md0 --size=max
and I get the info, that the new size is 50GB. And I wonder: why not 80GB? The
size doesn't change! If I try to force size (--size=xxxxx), I get the message
that there is no space.
What did I wrong?
Bellow some facts about my configuration.
Please help.
Thank You in advance
Sergiusz Brzeziński
-----------------------------------------------
# mdadm --detail /dev/md0
/dev/md0:
Version : 1.2
Creation Time : Wed Mar 30 07:25:47 2011
Raid Level : raid1
Array Size : 52427776 (50.00 GiB 53.69 GB)
Used Dev Size : 52427776 (50.00 GiB 53.69 GB)
Raid Devices : 2
Total Devices : 2
Persistence : Superblock is persistent
Update Time : Mon May 14 09:16:16 2012
State : clean
Active Devices : 2
Working Devices : 2
Failed Devices : 0
Spare Devices : 0
Name : linux-uo1f.site:1
UUID : 603ab02b:f8e9c2b9:863ce780:7f8dfca7
Events : 5472151
Number Major Minor RaidDevice State
2 8 2 0 active sync /dev/sda2
4 8 18 1 active sync /dev/sdb2
# cat /proc/mdstat
Personalities : [raid1]
md0 : active raid1 sda2[2] sdb2[4]
52427776 blocks super 1.2 [2/2] [UU]
unused devices: <none>
# fdisk /dev/sdb
Disk /dev/sdb: 320.1 GB, 320072933376 bytes
255 heads, 63 sectors/track, 38913 cylinders, total 625142448 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x0008f6dc
Device Boot Start End Blocks Id System
/dev/sdb1 * 2048 208895 103424 83 Linux
/dev/sdb2 208896 625142447 312466776 fd Linux raid autodetect
# fdisk /dev/sda
Disk /dev/sda: 90.0 GB, 90028302336 bytes
255 heads, 63 sectors/track, 10945 cylinders, total 175836528 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x08e607c5
Device Boot Start End Blocks Id System
/dev/sda1 2048 208895 103424 83 Linux
/dev/sda2 208896 175836527 87813816 fd Linux raid autodetect
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