Date: Sat, 1 Oct 2022 10:59:57 +0200 From: Andreas Kusalananda =?utf-8?B?S8OkaMOkcmk=?= <andreas.kahari@abc.se> To: Paul Procacci <pprocacci@gmail.com> Cc: Aryeh Friedman <aryeh.friedman@gmail.com>, FreeBSD Mailing List <freebsd-questions@freebsd.org> Subject: Re: Fwd: mkdir error message -- what does this mean? Message-ID: <YzgBjWeh1LgX0cLD@harpo.local> In-Reply-To: <CAFbbPujLJXR6u3ybugka=6w=b_=qYR0CxoR3hPC70cgU9vMAUw@mail.gmail.com> References: <e293b9c3b1c168ad1eee3a65510b1aa9@nyclocal.net> <CAGBxaXnc_ornipZxX=NgoDagCjcU80vMXZ1EjZr8j-8RrcdJnw@mail.gmail.com> <Yzc44MPka/dFNEL1@harpo.local> <CAFbbPujLJXR6u3ybugka=6w=b_=qYR0CxoR3hPC70cgU9vMAUw@mail.gmail.com>
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On Sat, Oct 01, 2022 at 02:38:09AM -0400, Paul Procacci wrote: > On Fri, Sep 30, 2022 at 2:44 PM Andreas Kusalananda Kähäri < > andreas.kahari@abc.se> wrote: > > > On Fri, Sep 30, 2022 at 02:35:14PM -0400, Aryeh Friedman wrote: > > > ---------- Forwarded message --------- > > > From: Dee Nixon <dnixon-fnwe@nyclocal.net> > > > Date: Fri, Sep 30, 2022 at 11:31 AM > > > Subject: mkdir error message -- what does this mean? > > > To: Aryeh Friedman <aryeh.friedman@gmail.com> > > > > > > > > > > > > What does the following mean? > > > > > > > > > dnixon@sft:/tmp % sudo mkdir > > > /fsvc/clients/specMed/LIVE/master/h11a9fpp-mkknhbci-2hjvbpc > > > mkdir: /fsvc/clients/specMed/LIVE/master/h11a9fpp-mkknhbci-2hjvbpc: Too > > > many links > > > dnixon@sft:/tmp % > > > > > > -- > > > > > > > > > -- > > > Aryeh M. Friedman, Lead Developer, http://www.PetiteCloud.org > > > > > > The error message usually says "Too many levels of symbolic links", so > > I'm assuming that you have translated it. > > > > It means that when creating the directory, a symbolic link was traversed > > that pointed back to itself, or in some other fasion created a loop. > > > > This can easily be recreated like this: > > > > $ ln -s link . > > $ ls -l > > total 1 > > lrwxr-xr-x 1 myself wheel 4 Sep 30 20:38 link -> link > > > > Then: > > > > $ mkdir link/hello > > mkdir: link/hello: Too many levels of symbolic links > > > > So, in your case, I would investigate whether any part of the target > > pathname "/fsvc/clients/specMed/LIVE/master/h11a9fpp-mkknhbci-2hjvbpc" > > is a symbolic link that points to somewhere where it shouldn't point. > > > > -- > > Andreas (Kusalananda) Kähäri > > SciLifeLab, NBIS, ICM > > Uppsala University, Sweden > > > > . > > > > > This was obviously incorrect as it wasn't a translation. The error Yes, it was incorrect. This was entierly due to me assuming (too quickly) that this was related to the much more common issue of resolving self-referential symbolic links. I'm aware how errno numbers and the associated messages work. This was, as I said, due to me making assumptions that were not correct and not double checking. Cheers. > messages that the standard FreeBSD utilities produce USUALLY provide you > with a short message that errno points to. It does this by way of "char > *strerror(int errnum)" (man 3 strerror). > All this says is, given an errno, provide me with an error string. > > By taking that error string (or most of it) you can look up which errno was > triggered. If this was indeed a symbolic link error the actual error > message would have been: "Too many levels of symbolic links" or errno > 62/ELOOP. (like you show'd) > Taking the exact error message and looking that up instead, you'll find > it's errno 31/EMLINK. > > Early I provided this data and was asked by David how I found this > information. I feel obligated to share it again here so in future finding > maybe not the exact cause of the problem, but a more logical explanation > for a given error can be made quicker: > > man errno > > The above command not only provides the "short" version of which error > strings that utilities can produce, but also provides a slightly more > detailed explanation (in most cases) about what a given errno means. > It doesn't always nor can it provide you a definitive answer every single > time, but in some cases it absolutely can. > > Anyways, just tying up loose ends. > > Thanks, > Paul Procacci > -- > __________________ > > :(){ :|:& };: -- Andreas (Kusalananda) Kähäri SciLifeLab, NBIS, ICM Uppsala University, Sweden .
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