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Full Discussion: how inode works
Operating Systems Solaris how inode works Post 302277460 by pupp on Friday 16th of January 2009 10:45:54 AM
Old 01-16-2009
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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pcata(7D)							      Devices								 pcata(7D)

NAME
pcata - PCMCIA ATA card device driver SYNOPSIS
pcata@socket#:a -u pcata@socket#:a -u,raw DESCRIPTION
The PCMCIA ATA card device driver supports PCMCIA ATA disk and flash cards that follow the following standards: o PC card 2.01 compliance (MBR+fdisk table required for all platforms). o PC card ATA 2.01 compliance. o PC card services 2.1 compliance. The driver supports standard PCMCIA ATA cards that contain a Card Information Structure (CIS). For PCMCIA, nodes are created in /devices that include the socket number as one component of the device name referred to by the node. However, the names in /dev, /dev/dsk, and /dev/rdsk follow the current conventions for ATA devices, which do not encode the socket number in any part of the name. For example, you may have the following: +----------------+-----------------------------------+---------------------+ |Platform | /devices name | /dev/dsk name | +----------------+-----------------------------------+---------------------+ |x86 | /devices/isa/pcic@1,3e0 /disk@0:a | /dev/dsk/c1d0s0 | +----------------+-----------------------------------+---------------------+ |SPARC | /devices/iommu@f,e0000000 | /dev/dsk/c1d0s0 | | | /sbus@f,e0001000 /SUNW, pcm- | | | | cia@3,0 /disk@0:a | | +----------------+-----------------------------------+---------------------+ PRECONFIGURATION
If a PC Card ATA device is recognized, the pcata driver is automatically loaded, IRQs allocated, devices nodes created, and special files created (if they do not already exist). Known Problems and Limitations o You need to umount the file system before removing the disk. o The ufs file systems on removable media (PC Card ATA) should have one of the onerror={panic, lock, umount} mount options set. CONFIGURATION
Configuration topics include initial installation and configuration, identifying an unrecognized device, special files and hot-plugging. Initial Installation and Configuration 1. Install the Solaris software. 2. Boot the system. 3. Insert the PC card ATA device. Identifying an Unrecognized Device If you insert a PC card ATA device and it is not recognized (no special files created), use the prtconf command to identify the problem. 1. Run the prtconf -D command to see if your pcata card is recognized. (A recognized device will appear at the end of the prtconf output. For example: # prtconf -D . . . pcic, instance #0 (driver name: pcic) . . . disk, instance #0 2. If pcata does not appear in the prtconf output, there is a problem with the PC card adapter configuration or with the hardware. Check to see whether the problem is with the card or the adapter by trying to use the card on another machine and by seeing if it works on the same machine using DOS. Special Files For PC card devices, nodes are created in /devices that include the socket number as one component of a device name that the node refers to. However, the /prtc/dev names and the names in /dev/dsk and /dev/rdsk do follow the current convention for ATA devices, which do not encode the socket number in any part of the name. Hot-Plugging o If you want to remove the disk, you must unmount the file system. o Use the mkfs_pcfs(1M) command to create a pcfs file system: # mkfs -F pcfs /dev/rdsk/c#d#p0:d o To mount a pcfs file system, type: # mount -F pcfs /dev/dsk/c#d#p0:c /mnt o If you want to create a ufs file system, use the newfs command and type: # newfs /dev/rdsk/c#d#s# o To mount a ufs file system, type: # mount -F ufs /dev/dsk/c#d#s# /mnt o To create a Solaris partition, run the format command and go to the Partition menu. For more information, see the format(1M) man page. FILES
/kernel/drv/pcata pcata driver ATTRIBUTES
See attributes(5) for descriptions of the following attributes: +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |Availability |SUNWpsdpr | +-----------------------------+-----------------------------+ SEE ALSO
format(1M), mount(1M), newfs(1M), pcmcia(7D), attributes(5), pcfs(7FS) SunOS 5.11 2 Mar 2007 pcata(7D)
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