What does errno 46 (ENOLCK) in Solaris mean?

ENOLCK

Record-lock table exhaustion

ENOLCK is Solaris errno 46 (No record locks available.). Solaris could not allocate another record-lock entry.

Record which process owns the existing record locks and whether lock entries are released on all close and error paths. Raising resource limits can mask a leak, so establish whether the table is genuinely busy or steadily growing.

What to check

• Check fcntl record-lock users and whether locks are leaked across long-lived processes.
• Look at per-process and system resource controls before assuming filesystem corruption.
• A retry can succeed only after other locks are released.

References

• Oracle Solaris intro(2): error numbers
• illumos errno.h definitions
• POSIX errno.h