fsck on a mounted file system?

GKnight · #1 (**permalink**) 11-16-2005

I have a Solaris 7 box. We got a strange error in the syslog, which read as follows:

Nov 15 11:50:16 server-01 unix: NOTICE: free inode /mount1/8025691 had size 0x20d

I consulted with a fellow sysadmin, and he suggested running "fsck -N" on the filesystem in question without unmounting it. So I did, and got a bunch of errors that read as follows:

LINK COUNT FILE I=5363232 OWNER=nobody MODE=0
SIZE=0 MTIME=Nov 16 08:53 2005 COUNT 0 SHOULD BE -1
ADJUST? no

UNREF FILE I=12544363 OWNER=nobody MODE=100600
SIZE=1891 MTIME=Nov 16 08:52 2005
RECONNECT? no

these are just examples. Should I worry about these? I'm thinking that mounted filesystem with active processes would always be "dirty". But I'm not sure that I'm even supposed to run fsck on a mounted file system, even with -N option. Is -N option save or am I doing some kind of a damage?

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