Birmingham mumbai

[
 225 
]
The fifth and sixth columns refer to 
dump
 and 
pass
 respectively, which on my system 
are 
0
 and 
0
 for each line. The 
dump
 partition is almost always 
0
 and can be used with 
a backup utility to determine whether the filesystem should be backed up (
0
 for no, 
1
 for yes). In most cases, just leave this at 
0
 since this is rarely ever used by anything 
nowadays. The 
pass
 field refers to the order in which 
fsck
 will check the filesystems. 
The 
fsck
 utility scans hard disks for filesystem errors in the case of a system failure 
or a scheduled scan. The possible options for 
pass
 are 
0
, 
1
, or 
2
. With 
0
, the partition 
is never checked with 
fsck
. If set to 
1
, the partition is checked first. Partitions with 
a 
pass
 of 
2
 are considered a second priority and checked last. As a general rule 
of thumb, consider using 
1
 for your main filesystem and 
2
 for all others. It's not 
uncommon for cloud server providers to use 
0
 for both fields. This may be because if 
a disk does undergo a routine check, it would take considerably longer to boot up. In 
a cloud environment, you can't always wait very long to get a server up and running.
Now that we understand all the columns of a typical 
fstab
 entry, we can work 
through adding another volume to the 
fstab
 file.