ufs inodes are not released on Solaris 8 for non-root users
george.done_at_orangemail.nl
Date: 09/01/04
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To: sunmanagers@sunmanagers.org Date: Wed, 1 Sep 2004 12:06:35 +0200
Dear friends,
I noticed on one of our systems (SunOS 5.8 Generic_108528-29 sun4u sparc
SUNW,Sun-Fire-V250 ) ufs inodes are not released after the corresponding
file has been removed making the filesystem to ultimatelly run out of
inodes.
The inodes get released after the filesystem is unmounted and mounted again,
but this is of course not an option. Did you hear about a patch for this
problem ?
The following command
/dt3g/opt/gnu/bin/df -i /mnt ;
mkdir /mnt/TEST ;
/dt3g/opt/gnu/bin/df -i /mnt ;
cd /mnt/TEST ;
touch TEST.txt ;
/dt3g/opt/gnu/bin/df -i /mnt ;
rm /mnt/TEST/TEST.txt ;
/dt3g/opt/gnu/bin/df -i /mnt ;
cd /mnt ;
rm -r TEST;
/dt3g/opt/gnu/bin/df -i /mnt
(For information , the gnu df command display the inode status of a
filesystem)
executed on a Solaris 2.6 system release each time all inode (SunOS 5.6
Generic_105181-35 sun4u sparc SUNW,Ultra-4 )
This set of commands executed on our new development platform (SunOS 5.8
Generic_108528-29 sun4u sparc SUNW,Sun-Fire-V250 )
give the following result:
if the user is root the result is the following
Filesystem Inodes IUsed IFree IUse% Mounted on
/dev/dsk/c0t8d0s7 1985280 78 1985202 1% /mnt
Filesystem Inodes IUsed IFree IUse% Mounted on
/dev/dsk/c0t8d0s7 1985280 79 1985201 1% /mnt
Filesystem Inodes IUsed IFree IUse% Mounted on
/dev/dsk/c0t8d0s7 1985280 80 1985200 1% /mnt
Filesystem Inodes IUsed IFree IUse% Mounted on
/dev/dsk/c0t8d0s7 1985280 79 1985201 1% /mnt
Filesystem Inodes IUsed IFree IUse% Mounted on
/dev/dsk/c0t8d0s7 1985280 78 1985202 1% /mnt
So all inode are released
If the user is not root (oracle in this example ), the result is the
following
Filesystem Inodes IUsed IFree IUse% Mounted on
/dev/dsk/c0t8d0s7 1985280 78 1985202 1% /mnt
Filesystem Inodes IUsed IFree IUse% Mounted on
/dev/dsk/c0t8d0s7 1985280 79 1985201 1% /mnt
Filesystem Inodes IUsed IFree IUse% Mounted on
/dev/dsk/c0t8d0s7 1985280 80 1985200 1% /mnt
Filesystem Inodes IUsed IFree IUse% Mounted on
/dev/dsk/c0t8d0s7 1985280 79 1985201 1% /mnt
Filesystem Inodes IUsed IFree IUse% Mounted on
/dev/dsk/c0t8d0s7 1985280 79 1985201 1% /mnt
Of course during this test , i am sure that no other process are running on
this filesystem
The filsystem used for this test is a normal UFS filesystem
Met vriendelijke groeten / Kind regards,
George Done
Storage & Unix System Administrator
Orange Nederland N.V.
Tel: +31(0)628026216
Fax: +31(0)648997173
E-mail: <mailto:george.done@orangemail.nl> george.done@orangemail.nl
There is no future in time travel !
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