suma/4.3: Prevent crash during Cobbler startup on NFS environments (bsc#1240666) #130
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Since Linux 2.6.12, NFS clients support flock() locks by emulating them as fcntl(2) byte-range locks on the entire file. This means that fcntl(2) and flock() loc 8000 ks do interact with one another over NFS. It also means that in order to place an exclusive lock, the file must be opened for writing. https://man7.org/linux/man-pages/man2/flock.2.html
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This PR backports cobbler#3906 to
suma/4.3