it was work without lost data
just follow this steps
root@HO-1-231:~# fdisk -l | grep dev
Disk /dev/md0 doesn't contain a valid partition table
Disk /dev/sdc doesn't contain a valid partition table
Disk /dev/sdd doesn't contain a valid partition table
Disk /dev/sda: 2000.4 GB, 2000398934016 bytes
/dev/sda1 1 243201 1953512001 fd Linux raid autodetect
Disk /dev/sdb: 2000.4 GB, 2000398934016 bytes
/dev/sdb1 1 243201 1953512001 fd Linux raid autodetect
Disk /dev/md0: 2000.4 GB, 2000396222464 bytes
Disk /dev/sdc: 2000.4 GB, 2000398934016 bytes
Disk /dev/sdd: 2000.4 GB, 2000398934016 bytes
root@HO-1-231:~# fdisk /dev/sdc
Device contains neither a valid DOS partition table, nor Sun, SGI or OSF disklabel
Building a new DOS disklabel with disk identifier 0x5ce337a5.
Changes will remain in memory only, until you decide to write them.
After that, of course, the previous content won't be recoverable.
Warning: invalid flag 0x0000 of partition table 4 will be corrected by w(rite)
The device presents a logical sector size that is smaller than
the physical sector size. Aligning to a physical sector (or optimal
I/O) size boundary is recommended, or performance may be impacted.
WARNING: DOS-compatible mode is deprecated. It's strongly recommended to
switch off the mode (command 'c') and change display units to
sectors (command 'u').
Command (m for help): p
Disk /dev/sdc: 2000.4 GB, 2000398934016 bytes
255 heads, 63 sectors/track, 243201 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes
Disk identifier: 0x5ce337a5
Device Boot Start End Blocks Id System
Command (m for help): n
Command action
e extended
p primary partition (1-4)
p
Partition number (1-4): 1
First cylinder (1-243201, default 1):
Using default value 1
Last cylinder, +cylinders or +size{K,M,G} (1-243201, default 243201): +50G
Command (m for help): p
Disk /dev/sdc: 2000.4 GB, 2000398934016 bytes
255 heads, 63 sectors/track, 243201 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes
Disk identifier: 0x5ce337a5
Device Boot Start End Blocks Id System/dev/sdc1 1 6528 52436128+ 83 Linux
Partition 1 does not start on physical sector boundary.
Command (m for help): t
Selected partition 1
Hex code (type L to list codes): fd
Changed system type of partition 1 to fd (Linux raid autodetect)
Command (m for help): p
Disk /dev/sdc: 2000.4 GB, 2000398934016 bytes
255 heads, 63 sectors/track, 243201 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes
Disk identifier: 0x5ce337a5
Device Boot Start End Blocks Id System
/dev/sdc1 1 6528 52436128+ fd Linux raid autodetect
Partition 1 does not start on physical sector boundary.
Command (m for help): w
The partition table has been altered!
Calling ioctl() to re-read partition table.
Syncing disks.
root@HO-1-231:~# fdisk /dev/sdd
Device contains neither a valid DOS partition table, nor Sun, SGI or OSF disklabel
Building a new DOS disklabel with disk identifier 0x3c581631.
Changes will remain in memory only, until you decide to write them.
After that, of course, the previous content won't be recoverable.
Warning: invalid flag 0x0000 of partition table 4 will be corrected by w(rite)
The device presents a logical sector size that is smaller than
the physical sector size. Aligning to a physical sector (or optimal
I/O) size boundary is recommended, or performance may be impacted.
WARNING: DOS-compatible mode is deprecated. It's strongly recommended to
switch off the mode (command 'c') and change display units to
sectors (command 'u').
Command (m for help): p
Disk /dev/sdd: 2000.4 GB, 2000398934016 bytes
255 heads, 63 sectors/track, 243201 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes
Disk identifier: 0x3c581631
Device Boot Start End Blocks Id System
Command (m for help): n
Command action
e extended
p primary partition (1-4)
p
Partition number (1-4): 1
First cylinder (1-243201, default 1):
Using default value 1
Last cylinder, +cylinders or +size{K,M,G} (1-243201, default 243201): +50G
Command (m for help): p
Disk /dev/sdd: 2000.4 GB, 2000398934016 bytes
255 heads, 63 sectors/track, 243201 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes
Disk identifier: 0x3c581631
Device Boot Start End Blocks Id System
/dev/sdd1 1 6528 52436128+ 83 Linux
Partition 1 does not start on physical sector boundary.
Command (m for help): t
Selected partition 1
Hex code (type L to list codes): fd
Changed system type of partition 1 to fd (Linux raid autodetect)
Command (m for help): p
Disk /dev/sdd: 2000.4 GB, 2000398934016 bytes
255 heads, 63 sectors/track, 243201 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes
Disk identifier: 0x3c581631
Device Boot Start End Blocks Id System
/dev/sdd1 1 6528 52436128+ fd Linux raid autodetect
Partition 1 does not start on physical sector boundary.
Command (m for help): w
The partition table has been altered!
Calling ioctl() to re-read partition table.
Syncing disks.
root@HO-1-231:~# fdisk -l | grep dev
Disk /dev/md0 doesn't contain a Valid partition table
Disk /dev/sda: 2000.4 GB, 2000398934016 bytes
/dev/sda1 1 243201 1953512001 fd Linux raid autodetect
Disk /dev/sdb: 2000.4 GB, 2000398934016 bytes
/dev/sdb1 1 243201 1953512001 fd Linux raid autodetect
Disk /dev/md0: 2000.4 GB, 2000396222464 bytes
Disk /dev/sdc: 2000.4 GB, 2000398934016 bytes
/dev/sdc1 1 6528 52436128+ fd Linux raid autodetect
Disk /dev/sdd: 2000.4 GB, 2000398934016 bytes
/dev/sdd1 1 6528 52436128+ fd Linux raid autodetect
root@HO-1-231:~# mdadm --create /dev/md1 --verbose --level=raid1 --raid-devices=2 /dev/sdc1 /dec/sdd1
mdadm: Cannot open /dec/sdd1: No such file or directory
mdadm: create aborted
root@HO-1-231:~# mdadm --create /dev/md1 --verbose --level=raid1 --raid-devices=2 /dev/sdc1 /dev/sdd1
mdadm: size set to 52436032K
mdadm: array /dev/md1 started.
root@HO-1-231:~# cat /proc/mdstat
Personalities : [linear] [raid0] [raid1] [raid10] [raid6] [raid5] [raid4] [multipath]
md1 : active raid1 sdd1[1] sdc1[0]
52436032 blocks [2/2] [UU]
[>....................] resync = 1.1% (599232/52436032) finish=7.2min speed=119846K/sec
md0 : active raid1 sda1[1] sdb1[0]
1953511936 blocks [2/2] [UU]
unused devices: <none>
root@HO-1-231:~# cat /proc/mdstat
Personalities : [linear] [raid0] [raid1] [raid10] [raid6] [raid5] [raid4] [multipath]
md1 : active raid1 sdd1[1] sdc1[0]
52436032 blocks [2/2] [UU]
[>....................] resync = 1.4% (755520/52436032) finish=9.1min speed=94440K/sec
md0 : active raid1 sda1[1] sdb1[0]
1953511936 blocks [2/2] [UU]
unused devices: <none>
root@HO-1-231:~# cat /proc/mdstat
Personalities : [linear] [raid0] [raid1] [raid10] [raid6] [raid5] [raid4] [multipath]
md1 : active raid1 sdd1[1] sdc1[0]
52436032 blocks [2/2] [UU]
[>....................] resync = 2.6% (1403328/52436032) finish=8.4min speed=100237K/sec
md0 : active raid1 sda1[1] sdb1[0]
1953511936 blocks [2/2] [UU]
unused devices: <none>
root@HO-1-231:~# cat /proc/mdstat
Personalities : [linear] [raid0] [raid1] [raid10] [raid6] [raid5] [raid4] [multipath]
md1 : active raid1 sdd1[1] sdc1[0]
52436032 blocks [2/2] [UU]
[>....................] resync = 3.2% (1691072/52436032) finish=9.5min speed=89003K/sec
md0 : active raid1 sda1[1] sdb1[0]
1953511936 blocks [2/2] [UU]
unused devices: <none>
root@HO-1-231:~# cat /proc/mdstat
Personalities : [linear] [raid0] [raid1] [raid10] [raid6] [raid5] [raid4] [multipath]
md1 : active raid1 sdd1[1] sdc1[0]
52436032 blocks [2/2] [UU]
[>....................] resync = 4.7% (2512256/52436032) finish=10.2min speed=81040K/sec
md0 : active raid1 sda1[1] sdb1[0]
1953511936 blocks [2/2] [UU]
unused devices: <none>
root@HO-1-231:~# cat /proc/mdstat
Personalities : [linear] [raid0] [raid1] [raid10] [raid6] [raid5] [raid4] [multipath]
md1 : active raid1 sdd1[1] sdc1[0]
52436032 blocks [2/2] [UU]
[=========>...........] resync = 46.1% (24198208/52436032) finish=8.0min speed=58504K/sec
md0 : active raid1 sda1[1] sdb1[0]
1953511936 blocks [2/2] [UU]
unused devices: <none>
root@HO-1-231:~# cat /proc/mdstat
Personalities : [linear] [raid0] [raid1] [raid10] [raid6] [raid5] [raid4] [multipath]
md1 : active raid1 sdd1[1] sdc1[0]
52436032 blocks [2/2] [UU]
[===================>.] resync = 96.2% (50460544/52436032) finish=0.4min speed=66731K/sec
md0 : active raid1 sda1[1] Sdb1[0]
1953511936 blocks [2/2] [UU]
unused devices: <none>
root@HO-1-231:~# cat /proc/mdstat
Personalities : [linear] [raid0] [raid1] [raid10] [raid6] [raid5] [raid4] [multipath]
md1 : active raid1 sdd1[1] sdc1[0]
52436032 blocks [2/2] [UU]
md0 : active raid1 sda1[1] sdb1[0]
1953511936 blocks [2/2] [UU]
unused devices: <none>
root@HO-1-231:~# ls /mnt
README cdrecorder/ cdrom/ dvd/ floppy/ hd/ memory/ tmp/ zip/
root@HO-1-231:~# mkdir /mnt/md1
root@HO-1-231:~# mount /dev/md1 /mnt/md1
mount: you must specify the filesystem type
root@HO-1-231:~# mkfs.xfs -f /dev/md1
warning: device is not properly aligned /dev/md1
meta-data=/dev/md1 isize=256 agcount=16, agsize=819313 blks
= sectsz=512 attr=2
data = bsize=4096 blocks=13109008, imaxpct=25
= sunit=0 swidth=0 blks
naming =version 2 bsize=4096 ascii-ci=0
log =internal log bsize=4096 blocks=6400, version=2
= sectsz=512 sunit=0 blks, lazy-count=1
realtime =none extsz=4096 blocks=0, rtextents=0
root@HO-1-231:~# mount /dev/md1 /mnt/md1
root@HO-1-231:~# mc
root@HO-1-231:/mnt/md1# exit
exit
root@HO-1-231:~# cd /mnt/md1
root@HO-1-231:/mnt/md1# ls
siapsrv/
root@HO-1-231:/mnt/md1# ls
siapsrv/
root@HO-1-231:/mnt/md1# cd siapsrv/
root@HO-1-231:/mnt/md1/siapsrv# ls
grub2/ grub2.tar.gz monmdadm/ postgresql-9.0.4.tar.gz rc.pg_reload* rc.pg_start* rc.pg_stop*
root@HO-1-231:/mnt/md1/siapsrv# mv rc.pg_reload testt
root@HO-1-231:/mnt/md1/siapsrv# ls
grub2/ grub2.tar.gz monmdadm/ postgresql-9.0.4.tar.gz rc.pg_start* rc.pg_stop* testt*
root@HO-1-231:/mnt/md1/siapsrv# md5
md5pass md5sum
root@HO-1-231:/mnt/md1/siapsrv# ls
grub2/ grub2.tar.gz monmdadm/ postgresql-9.0.4.tar.gz rc.pg_start* rc.pg_stop* testt*
root@HO-1-231:/mnt/md1/siapsrv# md5sum testt > md5sum
root@HO-1-231:/mnt/md1/siapsrv# ls
grub2/ grub2.tar.gz md5sum monmdadm/ postgresql-9.0.4.tar.gz rc.pg_start* rc.pg_stop* testt*
root@HO-1-231:/mnt/md1/siapsrv# mc
root@HO-1-231:/mnt/md1/siapsrv# exit
exit
root@HO-1-231:/mnt/md1/siapsrv# cat /proc/mdstat
Personalities : [linear] [raid0] [raid1] [raid10] [raid6] [raid5] [raid4] [multipath]
md1 : active raid1 sdd1[1] sdc1[0]
52436032 blocks [2/2] [UU]
md0 : active raid1 sda1[1] sdb1[0]
1953511936 blocks [2/2] [UU]
unused devices: <none>
root@HO-1-231:/mnt/md1/siapsrv# mdadm /dev/md1 --fail /dev/sdc1 --remove /dev/sdc1
mdadm: set /dev/sdc1 faulty in /dev/md1
mdadm: hot remove failed for /dev/sdc1: Device or resource busy
root@HO-1-231:/mnt/md1/siapsrv# cd /
root@HO-1-231:/# mdadm /dev/md1 --fail /dev/sdc1 --remove /dev/sdc1
mdadm: set /dev/sdc1 faulty in /dev/md1
mdadm: hot removed /dev/sdc1
root@HO-1-231:/# cat /proc/mdstat
Personalities : [linear] [raid0] [raid1] [raid10] [raid6] [raid5] [raid4] [multipath]
md1 : active raid1 sdd1[1]
52436032 blocks [2/1] [_U]
md0 : active raid1 sda1[1] sdb1[0]
1953511936 blocks [2/2] [UU]
unused devices: <none>
root@HO-1-231:/# fdisk -l | grep dev
Disk /dev/md0 doesn't contain a valid partition table
Disk /dev/md1 doesn't contain a valid partition table
Disk /dev/sda: 2000.4 GB, 2000398934016 bytes
/dev/sda1 1 243201 1953512001 fd Linux raid autodetect
Disk /dev/sdb: 2000.4 GB, 2000398934016 bytes
/dev/sdb1 1 243201 1953512001 fd Linux raid autodetect
Disk /dev/md0: 2000.4 GB, 2000396222464 bytes
Disk /dev/sdc: 2000.4 GB, 2000398934016 bytes
/dev/sdc1 1 6528 52436128+ fd Linux raid autodetect
Disk /dev/sdd: 2000.4 GB, 2000398934016 bytes
/dev/sdd1 1 6528 52436128+ fd Linux raid autodetect
Disk /dev/md1: 53.7 GB, 53694496768 bytes
root@HO-1-231:/# fdisk /dev/sdc
The device presents a logical sector size that is smaller than
the physical sector size. Aligning to a physical sector (or optimal
I/O) size boundary is recommended, or performance may be impacted.
WARNING: DOS-compatible mode is deprecated. It's strongly recommended to
switch off the mode (command 'c') and change display units to
sectors (command 'u').
Command (m for help): p
Disk /dev/sdc: 2000.4 GB, 2000398934016 bytes
255 heads, 63 sectors/track, 243201 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes
Disk identifier: 0x5ce337a5
Device Boot Start End Blocks Id System
/dev/sdc1 1 6528 52436128+ fd Linux raid autodetect
Partition 1 does not start on physical sector boundary.
Command (m for help): d
Selected partition 1
Command (m for help): p
Disk /dev/sdc: 2000.4 GB, 2000398934016 bytes
255 heads, 63 sectors/track, 243201 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes
Disk identifier: 0x5ce337a5
Device Boot Start End Blocks Id System
Command (m for help): n
Command action
e extended
p primary partition (1-4)
p
Partition number (1-4): 1
First cylinder (1-243201, default 1):
Using default value 1
Last cylinder, +cylinders or +size{K,M,G} (1-243201, default 243201): +84G
Command (m for help): p
Disk /dev/sdc: 2000.4 GB, 2000398934016 bytes
255 heads, 63 sectors/track, 243201 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes
Disk identifier: 0x5ce337a5
Device Boot Start End Blocks Id System
/dev/sdc1 1 10968 88092396+ 83 Linux
Partition 1 does not start on physical sector boundary.
Command (m for help): t
Selected partition 1
Hex code (type L to list codes): fd
Changed system type of partition 1 to fd (Linux raid autodetect)
Command (m for help): p
Disk /dev/sdc: 2000.4 GB, 2000398934016 bytes
255 heads, 63 sectors/track, 243201 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes
Disk identifier: 0x5ce337a5
Device Boot Start End Blocks Id System
/dev/sdc1 1 10968 88092396+ fd Linux raid autodetect
Partition 1 does not start on physical sector boundary.
Command (m for help): w
The partition table has been altered!
Calling ioctl() to re-read partition table.
Syncing disks.
root@HO-1-231:/# fdisk -l | grep dev
Disk /dev/md0 doesn't contain a valid partition table
Disk /dev/md1 doesn't contain a valid partition table
Disk /dev/sda: 2000.4 GB, 2000398934016 bytes
/dev/sda1 1 243201 1953512001 fd Linux raid autodetect
Disk /dev/sdb: 2000.4 GB, 2000398934016 bytes
/dev/sdb1 1 243201 1953512001 fd Linux raid autodetect
Disk /dev/md0: 2000.4 GB, 2000396222464 bytes
Disk /dev/sdc: 2000.4 GB, 2000398934016 bytes
/dev/sdc1 1 10968 88092396+ fd Linux raid autodetect
Disk /dev/sdd: 2000.4 GB, 2000398934016 bytes
/dev/sdd1 1 6528 52436128+ fd Linux raid autodetect
Disk /dev/md1: 53.7 GB, 53694496768 bytes
root@HO-1-231:/#
root@HO-1-231:/# df -h
Filesystem Size Used Avail Use% Mounted on
/dev/root 1.9T 165G 1.7T 9% /
tmpfs 7.9G 0 7.9G 0% /dev/shm
/dev/md1 50G 25M 50G 1% /mnt/md1
root@HO-1-231:/# mdadm /dev/md1 -a /dev/sdc1
mdadm: added /dev/sdc1
root@HO-1-231:/# cat /proc/mdstat
Personalities : [linear] [raid0] [raid1] [raid10] [raid6] [raid5] [raid4] [multipath]
md1 : active raid1 sdc1[2] sdd1[1]
52436032 blocks [2/1] [_U]
[>....................] recovery = 0.8% (460928/52436032) finish=13.1min speed=65846K/sec
root@HO-1-231:/# cat /proc/mdstat
Personalities : [linear] [raid0] [raid1] [raid10] [raid6] [raid5] [raid4] [multipath]
md1 : active raid1 sdc1[2] sdd1[1]
52436032 blocks [2/1] [_U]
[============>........] recovery = 61.8% (32446976/52436032) finish=5.1min speed=65110K/sec
md0 : active raid1 sda1[1] sdb1[0]
1953511936 blocks [2/2] [UU]
unused devices: <none>
root@HO-1-231:/# cat /proc/mdstat
Personalities : [linear] [raid0] [raid1] [raid10] [raid6] [raid5] [raid4] [multipath]
md1 : active raid1 sdc1[0] sdd1[1]
52436032 blocks [2/2] [UU]
md0 : active raid1 sda1[1] sdb1[0]
1953511936 blocks [2/2] [UU]
unused devices: <none>
root@HO-1-231:/# mdadm /dev/md1 --fail /dev/sdd1 --remove /dev/sdd1
mdadm: set /dev/sdd1 faulty in /dev/md1
mdadm: hot removed /dev/sdd1
root@HO-1-231:/# cat /proc/mdstat
Personalities : [linear] [raid0] [raid1] [raid10] [raid6] [raid5] [raid4] [multipath]
md1 : active raid1 sdc1[0]
52436032 blocks [2/1] [U_]
md0 : active raid1 sda1[1] sdb1[0]
1953511936 blocks [2/2] [UU]
unused devices: <none>
root@HO-1-231:/# fdisk /dev/sdd
The device presents a logical sector size that is smaller than
the physical sector size. Aligning to a physical sector (or optimal
I/O) size boundary is recommended, or performance may be impacted.
WARNING: DOS-compatible mode is deprecated. It's strongly recommended to
switch off the mode (command 'c') and change display units to
sectors (command 'u').
Command (m for help): p
Disk /dev/sdd: 2000.4 GB, 2000398934016 bytes
255 heads, 63 sectors/track, 243201 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes
Disk identifier: 0x3c581631
Device Boot Start End Blocks Id System
/dev/sdd1 1 6528 52436128+ fd Linux raid autodetect
Partition 1 does not start on physical sector boundary.
Command (m for help): d
Selected partition 1
Command (m for help): p
Disk /dev/sdd: 2000.4 GB, 2000398934016 bytes
255 heads, 63 sectors/track, 243201 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes
Disk identifier: 0x3c581631
Device Boot Start End Blocks Id System
Command (m for help): n
Command action
e extended
p primary partition (1-4)
p
Partition number (1-4): 1
First cylinder (1-243201, default 1):
Using default value 1
Last cylinder, +cylinders or +size{K,M,G} (1-243201, default 243201): +84G
Command (m for help): p
Disk /dev/sdd: 2000.4 GB, 2000398934016 bytes
255 heads, 63 sectors/track, 243201 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes
Disk identifier: 0x3c581631
Device Boot Start End Blocks Id System
/dev/sdd1 1 10968 88092396+ 83 Linux
Partition 1 does not start on physical sector boundary.
Command (m for help): t
Selected partition 1
Hex code (type L to list codes): fd
Changed system type of partition 1 to fd (Linux raid autodetect)
Command (m for help): p
Disk /dev/sdd: 2000.4 GB, 2000398934016 bytes
255 heads, 63 sectors/track, 243201 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes
Disk identifier: 0x3c581631
Device Boot Start End Blocks Id System
/dev/sdd1 1 10968 88092396+ fd Linux raid autodetect
Partition 1 does not start on physical sector boundary.
Command (m for help): t
Selected partition 1
Hex code (type L to list codes): fd
Command (m for help): p
Disk /dev/sdd: 2000.4 GB, 2000398934016 bytes
255 heads, 63 sectors/track, 243201 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes
Disk identifier: 0x3c581631
Device Boot Start End Blocks Id System
/dev/sdd1 1 10968 88092396+ fd Linux raid autodetect
Partition 1 does not start on physical sector boundary.
Command (m for help): w
The partition table has been altered!
Calling ioctl() to re-read partition table.
Syncing disks.
root@HO-1-231:/# mdadm /dev/md1 -a /dev/sdd1
mdadm: added /dev/sdd1
root@HO-1-231:/# cat /proc/mdstat
Personalities : [linear] [raid0] [raid1] [raid10] [raid6] [raid5] [raid4] [multipath]
md1 : active raid1 sdd1[2] sdc1[0]
52436032 blocks [2/1] [U_]
[===============>.....] recovery = 76.3% (40046528/52436032) finish=3.1min speed=66193K/sec
md0 : active raid1 sda1[1] sdb1[0]
1953511936 blocks [2/2] [UU]
unused devices: <none>
root@HO-1-231:/# cat /proc/mdstat
Personalities : [linear] [raid0] [raid1] [raid10] [raid6] [raid5] [raid4] [multipath]
md1 : active raid1 sdd1[2] sdc1[0]
52436032 blocks [2/1] [U_]
[===================>.] recovery = 97.1% (50961088/52436032) finish=0.3min speed=68716K/sec
md0 : active raid1 sda1[1] sdb1[0]
1953511936 blocks [2/2] [UU]
unused devices: <none>
root@HO-1-231:/# cat /proc/mdstat
Personalities : [linear] [raid0] [raid1] [raid10] [raid6] [raid5] [raid4] [multipath]
md1 : active raid1 sdd1[1] sdc1[0]
52436032 blocks [2/2] [UU]
md0 : active raid1 sda1[1] sdb1[0]
1953511936 blocks [2/2] [UU]
unused devices: <none>
root@HO-1-231:/# mdadm --detail /dev/md0 | grep -e 'Array Size' -e 'Device Size'
Array Size : 1953511936 (1863.01 GiB 2000.40 GB)
root@HO-1-231:/# mdadm --detail /dev/md1 | grep -e 'Array Size' -e 'Device Size'
Array Size : 52436032 (50.01 GiB 53.69 GB)
root@HO-1-231:/# mdadm --detail /dev/md1
/dev/md1:
Version : 0.90
Creation Time : Thu Feb 2 20:07:41 2012
Raid Level : raid1
Array Size : 52436032 (50.01 GiB 53.69 GB)
Used Dev Size : 52436032 (50.01 GiB 53.69 GB)
Raid Devices : 2
Total Devices : 2
Preferred Minor : 1
Persistence : Superblock is persistent
Update Time : Thu Feb 2 21:09:54 2012
State : clean
Active Devices : 2
Working Devices : 2
Failed Devices : 0
Spare Devices : 0
UUID : d2a575b9:b98dd42f:473eda47:d8152018
Events : 0.122
Number Major Minor RaidDevice State
0 8 33 0 active sync /dev/sdc1
1 8 49 1 active sync /dev/sdd1
root@HO-1-231:/# mdadm --detail /dev/md1 | grep -e 'Array Size' -e 'Used Dev Size'
Array Size : 52436032 (50.01 GiB 53.69 GB)
Used Dev Size : 52436032 (50.01 GiB 53.69 GB)
root@HO-1-231:/# mdadm --grow /dev/md1 -z maxroot@HO-1-231:/# mdadm --detail /dev/md1 | grep -e 'Array Size' -e 'Used Dev Size'
Array Size : 88092288 (84.01 GiB 90.21 GB)
Used Dev Size : 88092288 (84.01 GiB 90.21 GB)root@HO-1-231:/# mount /dev/root on / type xfs (rw,relatime,attr2,noquota) proc on /proc type proc (rw) sysfs on /sys type sysfs (rw) usbfs on /proc/bus/usb type usbfs (rw) tmpfs on /dev/shm type tmpfs (rw) /dev/md1 on /mnt/md1 type xfs (rw) root@HO-1-231:/# resize2fs /dev/md1 resize2fs 1.41.11 (14-Mar-2010) resize2fs: Bad magic number in super-block while trying to open /dev/md1 Couldn't find valid filesystem superblock.
root@HO-1-231:/# mc root@HO-1-231:/mnt/md1/siapsrv# exit exit root@HO-1-231:/# df -h Filesystem Size Used Avail Use% Mounted on /dev/root 1.9T 165G 1.7T 9% / tmpfs 7.9G 0 7.9G 0% /dev/shm /dev/md1 50G 25M 50G 1% /mnt/md1
root@HO-1-231:/# xfs_growfs /mnt/md1
meta-data=/dev/md1 isize=256 agcount=16, agsize=819313 blks
= sectsz=512 attr=2
data = bsize=4096 blocks=13109008, imaxpct=25
= sunit=0 swidth=0 blks
naming =version 2 bsize=4096 ascii-ci=0
log =internal bsize=4096 blocks=6400, version=2
= sectsz=512 sunit=0 blks, lazy-count=1
realtime =none extsz=4096 blocks=0, rtextents=0
data blocks changed from 13109008 to 22023072root@HO-1-231:/# df -h Filesystem Size Used Avail Use% Mounted on /dev/root 1.9T 165G 1. T 9% / tmpfs 7.9G 0 7.9G 0% /dev/shm /dev/md1 84G 26M 84G 1% /mnt/md1
root@HO-1-231:/#md5sum -c md5sum
ok
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