Identify the process that is locking a file. If the process is unwanted, it can be killed in the usual way, and the file is then unlocked. From: Mehdi Salehi via ibm-aix-l [mailto:ibm-aix-l Groups. The problem is that our application abnormally terminate, causing the locks remain on files which restrict another user to operate the application in a normal way.
Am I correct to do this? I have seen a file have a file descriptor open; but the application using that file would have to respect that open file descriptor. Not Windows here… You can edit an open file and force and overwrite with application like vi. Rules are last edits get saved, so if I open the file and edit while someone else has the file open; whoever saves last will overwrite the file in question thereby erasing the edits of the first person to save.
Man the command fuser and see if that helps. If not; get lsof… Lamar. Thus as I said, this is an application lock; not an OS lock. What application are we talking about? Might help next time to expand your question and save people time on formulating answers. Since the original file is still in place, we delete the.
Since you know the file, that ought not be a problem. From the man page: The mode character is followed by one of these lock characters, describing the type of lock applied to the file: N for a Solaris NFS lock of unknown type; r for read lock on part of the file; R for a read lock on the entire file; w for a write lock on part of the file; W for a write lock on the entire file; u for a read and write lock of any length; U for a lock of unknown type; x for an SCO OpenServer Xenix lock on part of the file; X for an SCO OpenServer Xenix lock on the entire file; space if there is no lock.
So the "FD" column of lsof above breaks down to: 10 The literal descriptor of this open file. Bratchley Bratchley I can't find where to get lslk, and it appears to no longer be maintained. It also doesn't distinguish between 'holding' and 'blocking'. The first letter character of the FD field is the file it has the file opened with I'm assuming that's what you mean by holding the optional second letter character is the lock if any it has on the file which I'm assuming is what you mean by "blocking" Also flock!
Your grep would have missed locks like the one in the post not to mention the first field is program name You're right - "mutex" was the name of my script, so grepping for 'mutex' is only applicable to my case. Thanks for pointing that out — Benubird. Anthon 74k 41 41 gold badges silver badges bronze badges. PypeBros PypeBros 4 4 bronze badges.
Sign up or log in Sign up using Google. In addition, a file system is busy if someone has issued a cd command and moved into one of its directories. When you see a "c" in the fuser output, you can change the file system's busy status by getting the user to cd to a directory in some other file system or log off. If necessary, you can kill the user process that is keeping the file system busy, though its always better to give the user some warning if you can.
If the file system is busy because it is being shared, you can un-share the file system and then unmount it. The various file system uses that fuser reports about include a process that is: using the file as its current directory -- c mapping the file with mmap -- m having the file open i. Another fuser option than comes in handy in situations like this is -c. Let's see what it will show us.
The "c" at the end of the string "c" tells us that the file system is busy because of a current working directory issue. It just doesn't tell us which directory is in use.
If, for some reason, you need to know this, you could check every directory within the file system using as many "fuser -c" commands as it took. But, since the user could be currently located in any subdirectory and might move while you are checking, this process could be both slow and problematical. You might try looping through all the subdirectories in the file system using a loop and an embedded find command like that shown below, but you would soon discover that the find command, in accessing each subdirectory, also ends up "using" it and, therefore, reporting itself in the process.
Stack Overflow for Teams — Collaborate and share knowledge with a private group. Create a free Team What is Teams? Collectives on Stack Overflow. Learn more. How do I find out which process is locking a file using. Ask Question. Asked 13 years, 1 month ago. Active 2 years, 4 months ago. Viewed k times. Update Links to similar questions How does one figure out what process locked a file using c?
Improve this question. Community Bot 1 1 1 silver badge. Related - stackoverflow. Add a comment. Active Oldest Votes. InteropServices; using System. Diagnostics; using System; using System. Unable to determine file locker. Length, resources, 0, null, 0, null ; if res! Add Process. GetProcessById processInfo[i]. Failed to get size of result.
IIS This call accesses the registry. Granting other-than-minimal permissions to the IIS user is a security risk.
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