DLm0642E: 내부 오류: DevBuf 풀에서 버퍼를 가져올 수 없음: 지연(5.4.x 실행)
Summary: DLm 코드 레벨 5.4.0.0에서 DLm 지우기 작업을 수행하는 동안 많은 DLm0642E 메시지가 발생하면 스레드가 응답하지 않게 되어 Virtuent 애플리케이션을 재시작해야 할 수 있습니다. 이 문제는 DLm 5.4.0.1 이상 코드에서 해결되었습니다.
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Symptoms
btilog에 다음과 같이 표시됩니다.
09/15/2021 11:50:54 vte1 VT: DLm0501I: Volume F18852 (/tapelibEPPROD/15_SNAP1/~F18852) erased (without truncation)
09/15/2021 11:50:54 vte1 VT: DLm0501I: Volume ED7900 (/tapelibEPPROD/10_SNAP1/~ED7900) erased (without truncation)
09/15/2021 11:50:54 vte1 VT: DLm0642E: Internal Error: cannot get buffer from DevBuf pool: delay
09/15/2021 11:50:54 vte1 VT: DLm0501I: Volume E02399 (/tapelibEPPROD/01_SNAP1/~E02399) erased (without truncation)
09/15/2021 11:50:54 vte1 VT: DLm0501I: Volume J27319 (/tapelibEPPROD/12_SNAP1/~J27319) erased (without truncation)
09/15/2021 11:50:54 vte1 VT: DLm0642E: Internal Error: cannot get buffer from DevBuf pool: delay
09/15/2021 11:50:54 vte1 VT: DLm0642E: Internal Error: cannot get buffer from DevBuf pool: delay
09/15/2021 11:50:54 vte1 VT: DLm0642E: Internal Error: cannot get buffer from DevBuf pool: delay
09/15/2021 11:50:54 vte1 VT: DLm0642E: Internal Error: cannot get buffer from DevBuf pool: delay
09/15/2021 11:50:54 vte1 VT: DLm0642E: Internal Error: cannot get buffer from DevBuf pool: delay
09/15/2021 11:50:55 vte1 VT: DLm0642E: Internal Error: cannot get buffer from DevBuf pool: delay
09/15/2021 11:50:55 vte1 VT: DLm0642E: Internal Error: cannot get buffer from DevBuf pool: delay
09/15/2021 11:50:55 vte1 VT: DLm0642E: Internal Error: cannot get buffer from DevBuf pool: delay
10/02/2021 05:53:17 vte1 VT: DLm0899I: Tapelib /tapelibNBDEV/01 thread has been in state: 01009230 for 619 seconds
10/02/2021 05:53:17 vte1 VT: DLm0899I: Tapelib /tapelibNBDEV/02 thread has been in state: 01009230 for 629 seconds
10/02/2021 05:57:17 vte1 VT: DLm0899I: Device 8108 has been in state: 4D10200D for 611 seconds
10/02/2021 06:00:31 vte1 VT: DLm0207W: Device 8023 bypassing stalled filesystem /tapelibNBDEV/01 (stalled for 1054 seconds)(build list)(01009230)
10/02/2021 06:00:31 vte1 VT: DLm0207W: Device 8023 bypassing stalled filesystem /tapelibNBDEV/02 (stalled for 1064 seconds)(build list)(01009230)
09/15/2021 11:50:54 vte1 VT: DLm0501I: Volume ED7900 (/tapelibEPPROD/10_SNAP1/~ED7900) erased (without truncation)
09/15/2021 11:50:54 vte1 VT: DLm0642E: Internal Error: cannot get buffer from DevBuf pool: delay
09/15/2021 11:50:54 vte1 VT: DLm0501I: Volume E02399 (/tapelibEPPROD/01_SNAP1/~E02399) erased (without truncation)
09/15/2021 11:50:54 vte1 VT: DLm0501I: Volume J27319 (/tapelibEPPROD/12_SNAP1/~J27319) erased (without truncation)
09/15/2021 11:50:54 vte1 VT: DLm0642E: Internal Error: cannot get buffer from DevBuf pool: delay
09/15/2021 11:50:54 vte1 VT: DLm0642E: Internal Error: cannot get buffer from DevBuf pool: delay
09/15/2021 11:50:54 vte1 VT: DLm0642E: Internal Error: cannot get buffer from DevBuf pool: delay
09/15/2021 11:50:54 vte1 VT: DLm0642E: Internal Error: cannot get buffer from DevBuf pool: delay
09/15/2021 11:50:54 vte1 VT: DLm0642E: Internal Error: cannot get buffer from DevBuf pool: delay
09/15/2021 11:50:55 vte1 VT: DLm0642E: Internal Error: cannot get buffer from DevBuf pool: delay
09/15/2021 11:50:55 vte1 VT: DLm0642E: Internal Error: cannot get buffer from DevBuf pool: delay
09/15/2021 11:50:55 vte1 VT: DLm0642E: Internal Error: cannot get buffer from DevBuf pool: delay
10/02/2021 05:53:17 vte1 VT: DLm0899I: Tapelib /tapelibNBDEV/01 thread has been in state: 01009230 for 619 seconds
10/02/2021 05:53:17 vte1 VT: DLm0899I: Tapelib /tapelibNBDEV/02 thread has been in state: 01009230 for 629 seconds
10/02/2021 05:57:17 vte1 VT: DLm0899I: Device 8108 has been in state: 4D10200D for 611 seconds
10/02/2021 06:00:31 vte1 VT: DLm0207W: Device 8023 bypassing stalled filesystem /tapelibNBDEV/01 (stalled for 1054 seconds)(build list)(01009230)
10/02/2021 06:00:31 vte1 VT: DLm0207W: Device 8023 bypassing stalled filesystem /tapelibNBDEV/02 (stalled for 1064 seconds)(build list)(01009230)
Cause
DLm 5.4.0.0 릴리스에 코드 문제가 발생하여 스크래치 또는 지우기 프로세스에 사용한 후 디바이스 버퍼 릴리스가 지연될 수 있습니다.
이는 버퍼 풀이 과도한 스크래치나 지우기 중에 고갈되는 버퍼 부족 문제로, 다른 스레드가 버퍼를 가져오려고 대기할 때 계단식 지연이 발생합니다.
이는 버퍼 풀이 과도한 스크래치나 지우기 중에 고갈되는 버퍼 부족 문제로, 다른 스레드가 버퍼를 가져오려고 대기할 때 계단식 지연이 발생합니다.
Resolution
고객은 Virtuent 애플리케이션을 재시작하거나 VTE를 재부팅하여 즉시 문제 해결을 수행해야 합니다.
이 문제는 DLm 5.4.0.1 이상 코드에서 해결되었습니다.
이 문제는 DLm 5.4.0.1 이상 코드에서 해결되었습니다.
Affected Products
Disk Library for mainframe DLm2500, Disk Library for mainframe DLm8500Article Properties
Article Number: 000191670
Article Type: Solution
Last Modified: 21 Oct 2025
Version: 8
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