Mksf.ext3 is Linux command that allow you to make a Linux file system (ext3), generally in a hard disk partition. When implementing the command, you have to mention the device name the file system should reside on. The command creates the file system with ext3 journal. If you run this command on a system attached with multiple hard drives (for example, in RAID), it is recommended to mention the device name carefully. Failing to do so can result into data loss instances, such as inaccessible partitions. However to resolve with such conditions, you generally require restoring lost data from backup or using Linux file recovery applications that could effectively scan your drive and restore lost data at a safe location.
As an instance, you use a RAID 1 system with many drives (for say, /dev/sdb1 and /dev/sdc1) . Then, you use MDADM to create RAID 1 device (for say, /dev/md0 )and apply mkfs.ext3 command on individual drives. After this, when you try to mount the system, the partitions appears to be inaccessible and you cannot access the data furthermore.
MDAM is the utility that could manage, create, monitor and delete MD devices (Linux software RAID)
A Linux system exhibit the similar situation as above, if running mkfs.ext3 command has overwritten the superblock information. This results into inaccessible partitions. Thus, if you require to use this command, it is recommended to run it on RAID device (/dev/md0 in this case) itself and not on other drives.
To resolve such problems, you should perform these methods:
Try running the following command:
e2fsck -f /dev/md0
If problem persists, restore from backup
If no valid and clean data backup is available, you should scan your hard drive and recover your lost data by using Linux recovery tools.
Linux recovery software are powerful data recovery tools that use effective scanning algorithms to recover lost data. These utilities are competent to examine a logically crashed drive and to perform safe recovery.
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