KomputerLinux

mount: unknown filesystem type ‘linux_raid_member’ FORMAT ULANG

dengan type ‘linux_raid_member’ agak bingung juga, karena linux nya tidak mengunakan RAID software tapi hardisk bekasnya mengunakan raidsoftware.

# mount /dev/sdc1 /mnt 
mount: unknown filesystem type 'linux_raid_member'

iya sampe disana saya stuck berbulan2 saja dan tidak bisa lanjut karena bingung wkwkwkw lalu saya baca ini ttps://serverfault.com/questions/383362/mount-unknown-filesystem-type-linux-raid-member

saya cek koq bisa ada raid yang inactive? ke mount di /dev/md127

# cat /proc/mdstat 
Personalities : [raid0] 
md127 : inactive sdc1[1](S)
<span id="more-14442"></span>     2930134471 blocks super 1.2
      
unused devices

coba di mount gagal lagi

# mount /dev/md127 /mnt
mount: you must specify the filesystem type 

jika demikian coba kita stop dan kita coba hancurkan sekalian partisinya, karena ingat kita tidak butuh data lamanya.

# mdadm --stop /dev/md127

cek kembali pastikan sudah tidak termount, karena akan selalu busy pesanya nanti.

# cat /proc/mdstat

hardisk ini ukuranya kurang dari 3Tb jadi bisa kita partisi dengan gdisk
1.create a new empty GUID partition table dengan GDISK

# gdisk /dev/sdc
GPT fdisk (gdisk) version 0.8.10
Partition table scan:
 MBR: protective
 BSD: not present
 APM: not present
 GPT: present
Found valid GPT with protective MBR; using GPT.
Command (? for help): o
This option deletes all partitions and creates a new protective MBR.
Proceed? (Y/N): y
Command (? for help): w
Final checks complete. About to write GPT data. THIS WILL OVERWRITE EXISTING
PARTITIONS!!
Do you want to proceed? (Y/N): y
OK; writing new GUID partition table (GPT) to /dev/sdc.
Warning: The kernel is still using the old partition table.
The new table will be used at the next reboot.
The operation has completed successfully.

2.add a new partition dengan GDISK

 # gdisk /dev/sdc
 GPT fdisk (gdisk) version 0.8.10

Partition table scan:
 MBR: protective
 BSD: not present
 APM: not present
 GPT: present
Found valid GPT with protective MBR; using GPT.
Command (? for help): ?
b       back up GPT data to a file
c       change a partition's name
d       delete a partition
i       show detailed information on a partition
l       list known partition types
n       add a new partition
o       create a new empty GUID partition table (GPT)
p       print the partition table
q       quit without saving changes
r       recovery and transformation options (experts only)
s       sort partitions
t       change a partition's type code
v       verify disk
w       write table to disk and exit
x       extra functionality (experts only)
?       print this menu
Command (? for help): p
Disk /dev/sdc: 5860533168 sectors, 2.7 TiB
Logical sector size: 512 bytes
Disk identifier (GUID): F1E9F36B-FA50-4E93-9EDA-BB44F8333144
Partition table holds up to 128 entries
First usable sector is 34, last usable sector is 5860533134
Partitions will be aligned on 2048-sector boundaries
Total free space is 5860533101 sectors (2.7 TiB)
Number  Start (sector)    End (sector)  Size       Code  Name
Command (? for help): n (enter-enter saja)
Partition number (1-128, default 1): 
First sector (34-5860533134, default = 2048) or {+-}size{KMGTP}: 
Last sector (2048-5860533134, default = 5860533134) or {+-}size{KMGTP}: 
Current type is 'Linux filesystem'
Hex code or GUID (L to show codes, Enter = 8300): 
Changed type of partition to 'Linux filesystem' 
Command (? for help): w
Final checks complete. About to write GPT data. THIS WILL OVERWRITE EXISTING
PARTITIONS!!
Do you want to proceed? (Y/N): y
OK; writing new GUID partition table (GPT) to /dev/sdc.
Warning: The kernel is still using the old partition table.
The new table will be used at the next reboot.
The operation has completed successfully.

kita cek partisinya

# gdisk -l /dev/sdc   
GPT fdisk (gdisk) version 0.8.10
Partition table scan:
 MBR: protective
 BSD: not present
 APM: not present
 GPT: present
Found valid GPT with protective MBR; using GPT.
Disk /dev/sdc: 5860533168 sectors, 2.7 TiB
Logical sector size: 512 bytes
Disk identifier (GUID): F1E9F36B-FA50-4E93-9EDA-BB44F8333144
Partition table holds up to 128 entries
First usable sector is 34, last usable sector is 5860533134
Partitions will be aligned on 2048-sector boundaries
Total free space is 2014 sectors (1007.0 KiB)
Number  Start (sector)    End (sector)  Size       Code  Name
  1            2048      5860533134   2.7 TiB     8300  Linux filesystem

yap berhasil terbaca sizenya 2.7 TiB

3. saatnya format

# mkfs.ext4 /dev/sdc1 
mke2fs 1.42.6 (21-Sep-2012)
Filesystem label=
OS type: Linux
Block size=4096 (log=2)
Fragment size=4096 (log=2)
Stride=0 blocks, Stripe width=0 blocks
183148544 inodes, 732566385 blocks
36628319 blocks (5.00%) reserved for the super user
First data block=0
Maximum filesystem blocks=4294967296
22357 block groups
32768 blocks per group, 32768 fragments per group
8192 inodes per group
Superblock backups stored on blocks: 
        32768, 98304, 163840, 229376, 294912, 819200, 884736, 1605632, 2654208, 
        4096000, 7962624, 11239424, 20480000, 23887872, 71663616, 78675968, 
        102400000, 214990848, 512000000, 550731776, 644972544
Allocating group tables: done                            
Writing inode tables: done                            
Creating journal (32768 blocks): done
Writing superblocks and filesystem accounting information: done        

4. mounting dan selesai

# mount /dev/sdc1 /mnt
# df -h
Filesystem      Size  Used Avail Use% Mounted on
/dev/sda1        99G   47G   47G  50% /
tmpfs            24G     0   24G   0% /dev/shm
/dev/sdb1       1.8T  1.8T     0 100% /backup
/dev/sdc1       2.7T   73M  2.6T   1% /mnt 
<strong style="font-family: Georgia, 'Times New Roman', 'Bitstream Charter', Times, serif;">5. agar mount otomatis jangan lupa untuk diubah UUIDnya di fstab
# blkid 
/dev/sdc1: UUID="081b3a15-0efb-4c4e-9233-482dcf7387f3" TYPE="ext4" 
# cat /etc/fstab | grep backup
UUID=081b3a15-0efb-4c4e-9233-482dcf7387f3 /backup                 ext4    defaults        1 2

error saat format ini karena kita tidak stop dahulu mdadmnya

# mkfs.ext4 /dev/sdc1 
mke2fs 1.42.6 (21-Sep-2012)
/dev/sdc1 is apparently in use by the system; will not make a filesystem here!

untuk restore data dari disk type raid ini nanti akan dibuatkan dan teryata sudah pernah dibuat dan tercecer, alamak 😀

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Nama: Arie Ibrahim | Lahir : 16 january 1987 | Lulus : SMA 28 Oktober 1928 jakarta Selatan Tahun 2005 | Keahlian : dibidang komputer. | Ketertarikan: ilmu komputer, ilmu Quran, dan Ilmu Fisika. | Kontak : arie@carauntuk.com adpit31@gmail.com | Pesan : semoga artikel diatas bermanfaat bagi saya pribadi dan yang membutuhkannya, Terimakasih

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