how inode works Post: 302277460

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Operating Systems Solaris how inode works Post 302277460 by pupp on Friday 16th of January 2009 10:45:54 AM

01-16-2009

Registered User

ooo i've had some nighmares about inodes!!

you may want to leave your default inode (number of bytes per inode = nbpi) for now until you have a good idea what EXACTLY is going on this server. wrongly configured and you could waste space or run out of inodes rather quickly.

take a look at this link and it will show you some general calculations: Number of Inodes (Files) (System Administration Guide: Devices and File Systems) - Sun Microsystems

few more things. newfs (i assume you are looking at a ufs fs) will allow you to change your nbpi. growfs i believe will also change the number of inodes as the filesystem grows.

if you are curious, use `df -F ufs -o i` to see current free v. used inodes on a system.

output from my x86 box.

Code:

-bash-3.00# df -F ufs -o i
Filesystem             iused   ifree  %iused  Mounted on
/dev/dsk/c2d0s0        24035 2404573     1%   /
/dev/dsk/c2d0s6       151478 8345738     2%   /usr
/dev/dsk/c2d0s1        20052 2408556     1%   /var
/dev/dsk/c2d0s5        10358 7269642     0%   /opt
/dev/md/dsk/d0         74978 28503390     0%   /data
/dev/dsk/c2d0s7           67 8054525     0%   /export/home

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LEARN ABOUT SUSE

xfs_ncheck

xfs_ncheck(8)						      System Manager's Manual						     xfs_ncheck(8)

NAME

       xfs_ncheck - generate pathnames from i-numbers for XFS

SYNOPSIS

       xfs_ncheck [ -i ino ] ... [ -f ] [ -s ] [ -l logdev ] device

DESCRIPTION

       xfs_ncheck  with no -i arguments generates an inode number and pathname list of all files on the given filesystem. Names of directory files
       are followed by /..  The output is not sorted in any particular order.  The filesystem to be examined is specified by the device  argument,
       which should be the disk or volume device for the filesystem.  Filesystems stored in files can also be checked, using the -f flag.

OPTIONS

       -f	Specifies  that the filesystem image to be processed is stored in a regular file at device (see the mkfs.xfs -d file option). This
		might happen if an image copy of a filesystem has been made into an ordinary file.

       -l logdev
		Specifies the device where the filesystem's external log resides.  Only for those filesystems which use an external log.  See  the
		mkfs.xfs -l option, and refer to xfs(5) for a detailed description of the XFS log.

       -s	Limits	the  report to special files and files with setuserid mode.  This option may be used to detect violations of security pol-
		icy.

       -i ino	Limits the report to only those files whose inode numbers follow.  May be given multiple times to select multiple inode numbers.

       If the filesystem is seriously corrupted, or very busy and looks like it is corrupt, a message of the  form  that  would  be  generated	by
       xfs_check(8) may appear.

       xfs_ncheck is only useful with XFS filesystems.

SEE ALSO

       mkfs.xfs(8), xfs_check(8), xfs(5).

																     xfs_ncheck(8)

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