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- Re: hard link (find file , which it points to )
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тАО04-28-2011 02:42 AM
тАО04-28-2011 02:42 AM
Re: hard link (find file , which it points to )
does a command or function exits like "get filesystem " ?
a combination of "pwd -P" and "bdf ." ?
i think it is better to user "df ." , why?
when i have longer lvol's oder filesystem's, it isn't easy to parse :
df .
/testfs/filesys1 (/dev/vgtestfs1/filesys1): 12205184 blocks 191869 i-nodes
bdf .
Filesystem kbytes used avail %used Mounted on
/dev/vgtestfs1/filesys1
18874368 12734552 6102592 68% /testfs/filesys1
regards
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тАО04-28-2011 03:23 AM
тАО04-28-2011 03:23 AM
Re: hard link (find file , which it points to )
i created a short script (in attachment).
it is a mix of shell and perl.
i use perl to detect :
- nlink number of (hard) links
- inode number
how can i detect the version of filesystem
- i use /sbin/vxupgrade ?
regards
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тАО04-28-2011 04:08 AM
тАО04-28-2011 04:08 AM
Re: hard link (find file , which it points to )
A couple of comments:
If you to see if a directory is a mountpoint, test [stat()]for the directory to have an inode number of <2>. All mountpoints have inode=2.
I suggested using :
# perl -MCwd=realpath -le 'print realpath q(.)'
...to be able to define (at the top level) the mountpoint in which you are looking.
As for detecting the VxFS filesystem version, you can use the device associated with the filesystem in question :
# fstyp -v /dev/vgNN/lvolN
...or you can use 'vxupgrade':
# vxupgrade /mymountpoint
Regards!
...JRF...
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тАО04-28-2011 05:50 AM
тАО04-28-2011 05:50 AM
Re: hard link (find file , which it points to )
# perl -MCwd=realpath -le 'print realpath q(.)'
should i get the mountpoint in which i am ?
we have at one server following mountpoint's:
/testfs
/testfs/filesys1
/testfs/filesys2
when i change to example:
cd /testfs/filesys1/dir1/dir2
then i get with :
perl -MCwd=realpath -le 'print realpath q(.)'
/testfs/filesys1/dir1/dir2 .
should i get /testfs/filesys1 ?
on other server i have a filesystem like:
/demo
i change to /demo/dir1/dir2
then i get with :
perl -MCwd=realpath -le 'print realpath q(.)'
/demo/dir1/dir2
perl -MCwd=realpath -le 'print realpath q(.)'
is it only for link's ?
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тАО04-28-2011 06:17 AM
тАО04-28-2011 06:17 AM
Re: hard link (find file , which it points to )
> please correct if i don't understand command:
I'm sorry, I don't mean to be oblique. My thinking is that if you have the full, real path of your file, then you can walk-backwards through the (sub)paths using a stat() to find at what point you are inode=2 which is the mountpoint.
Knowing the mountpoint then allows you to use a find() by inode. Listing all files in a filesystem with the same inode gives you what you want.
Regards!
...JRF...
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тАО04-29-2011 02:52 PM
тАО04-29-2011 02:52 PM
Re: hard link (find file , which it points to )
No need when you can roll your own.
How often are you going to track down these hardlink families that you think you need a script?
>I think it is better to user "df ."
My fingers just always type bdf. :-)
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тАО05-02-2011 12:38 AM
тАО05-02-2011 12:38 AM
Re: hard link (find file , which it points to )
in my company we have a self-developed application , with use hard link's. i had to check if the hard link's point to the right source. how many hard link's : about 6.000
with the script i would know very fast , where the hard link "point to"
i checked the hard link's with those little script and it work's with your input perfect.
thanks
regards
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тАО05-02-2011 12:55 AM
тАО05-02-2011 12:55 AM
Re: hard link (find file , which it points to )
final version of script:
get_file_of_hard_link.sh
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тАО05-02-2011 11:08 AM
тАО05-02-2011 11:08 AM
Re: hard link (find file , which it points to )
If you have 6 thousand links to check, you may want to do more than one at a time.
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