FILE INODE & DISK QUOATA

[Vinayak_HPUX]

As per the my concern maximum files of 0 byte sized is not depend on the disk size it's depend on number of inodes on the disk. My Q? is

How many [maximum], 0 byte sized file we can create on particular disk partition[example of 10MB disk] Could u plz suggest any formula if any?

[Dennis Handly · Accepted solution]

Any reason you care about this? If they are 0 size, you might as well keep them in a database or a text file.

[Bill Hassell]

For HP-UX using the VxFS filesystem (not HFS), there is no practical limit to inodes -- they are created as needed (not fixed at newfs time). That said, if you will have tens or hundreds of thousands of these files, you will have to educate everyone about the big issues with large directories. Using file matching characters like * and ? can produce massively long command lines. You'll need to become familiar with xargs and forget simple commands like ll *

[Vinayak_HPUX]

I have mounted volume of 1GB size with vxfs FS on mount point /mnt1 & Let one script which is creating 1010 files of 2048 Byte & excceds limits of 1GB while creting 1006 file & gives vx_nospace issue
==================================
for i in `echo {1..1010}`; do dd if=/dev/zero of=/mnt1/VINfile$i count=1024 bs=1024; echo "$i done"; done
==================================
So here it is allocating max 1010 inodes for 1010 files & giving vx_nospace message due to lack of space. but how could I allocate all the inodes from that 1GB disk but creating 'x' number of files on 1GB disk OR how could I came to know the inode limit on that particular 1GB vxfs mounted volume.... ?

below script will create 0 sized files
==================================
for i in `echo {1..30000}`; do touch /mnt1/vinfile$i; echo "$i done"; done
==================================

[Sunny123_1]

Hi

For VxFS filesystems, 'inodes' allocation is unlimited, as long as there is space in the filesystem and as long as 'largefiles' is enabled. Wthout 'largefiles' enabled, you are limited to about 8-million inodes


Regards
Sunny

[Sunny123_1]

Hi

You can use

df -F vxfs -i or

bdf -i /filesystem to see the free and used inodes.


Regards
Sunny

[Dennis Handly]

>how could I know the inode limit on that particular 1GB vxfs volume?

There is no fixed inode limit. What you have is a fixed size 1 Gb. You can carve it up with lots of data and a few inodes, or lots of inodes and little data.

If you really want to know the formula, it would be related to the size of each inode and the directory size. The size of any other vxfs metadata and overhead, etc.

[Vinayak_HPUX]

[root@sfqapa27][/mnt1]$ bdf -i /mnt1
Filesystem kbytes used avail %used iused ifree %iuse Mounted on
/dev/vx/dsk/testdg/vol1
1048576 21994 966644 2% 3 256645 0% /mnt1
[root@sfqapa27][/mnt1]$ ls
So here .....below script should exceed the limit & should give vX_nospace OR should show inode limit exceeded
[root@sfqapa27][/mnt1]$ for i in `echo {1..256646}`; do touch vinfile$i; echo "$i done"; done > /dev/null > 2&>1
IS IT correct... ?

[Sunny123_1]

Hi

if you are using VxFS filesystems then inodes allocation is unlimited.


Regards
Sunny

[Dennis Handly]

>below script should exceed the limit & should give vx_nospace OR should show inode limit exceeded. IS IT correct?

Perhaps or perhaps not. You have at least that many inodes but vxfs will make more. IF you don't run out of directory space and other metadata requirements.

[Vinayak_HPUX]

Dear All,
Thanks lot for valuable guidence.... :-)

[Sunny123_1]

Hi

If your problem has solved then go ahead and closed this thread.

Regards
Sunny

[James R. Ferguson]

Hi:

@ Sunny123 : I despise outright _plagiarism_ (here, a total copy-and-paste). You need to learn to (1) rephrase the facts in your own words; or (2) cite the reference (here, the thread) in which you find your supporting argument. You forgot to copy my last comment, that "Long before you run out of inodes, your filesystem performance will probably suffer.". Do a better job at copying-and-pasting next time.

Oh, by the way, its all here:

http://forums.itrc.hp.com/service/forums/questionanswer.do?threadId=1186868

...JRF...

[Vinayak_HPUX]

Problem has been resolved now.... Here I am not cosing this thread ...becoz if I found the other issue regrding inode or Quata I will put here or only....

[Vinayak_HPUX]

Got solution ... I will reopen the same if I found the issue in future Thx lot for the help.. :)