Nos últimos dias tenho tido problemas com um servidor web rodando CentOS 7. A cada 13-14 minutos alguma operação (que identifiquei com mariadb usando iostat) parece saturar completamente as operações de IO do disco, bloqueando todos os outros aplicativos. Após cerca de 3 minutos tudo volta ao normal.
Em /var/log/messages eu vejo:
Sep 14 09:35:42 MY-VM kernel: mptscsih: ioc0: attempting task abort! (sc=ffff9aefd1e76d80)
Sep 14 09:35:42 MY-VM kernel: sd 0:0:0:0: [sda] CDB: Write(10) 2a 00 2a 8b 1b 18 00 00 10 00
Sep 14 09:35:42 MY-VM kernel: mptscsih: ioc0: task abort: SUCCESS (rv=2002) (sc=ffff9aefd1e76d80)
Sep 14 09:35:42 MY-VM kernel: mptscsih: ioc0: attempting task abort! (sc=ffff9aefd1e741c0)
Sep 14 09:35:42 MY-VM kernel: sd 0:0:0:0: [sda] CDB: Write(10) 2a 00 0f 37 0a 58 00 00 08 00
Sep 14 09:35:42 MY-VM kernel: mptscsih: ioc0: task abort: SUCCESS (rv=2002) (sc=ffff9aefd1e741c0)
Sep 14 09:35:42 MY-VM kernel: mptscsih: ioc0: attempting task abort! (sc=ffff9aefd1e74700)
Sep 14 09:35:42 MY-VM kernel: sd 0:0:0:0: [sda] CDB: Write(10) 2a 00 0f 37 0a 38 00 00 10 00
Sep 14 09:35:42 MY-VM kernel: mptscsih: ioc0: task abort: SUCCESS (rv=2002) (sc=ffff9aefd1e74700)
Tenho monitorado as consultas, mas não consigo encontrar nada significativo.
Responder1
No final o problema estava com um destes softwares (removido com o yum):
- desktop-file-utils-0.23-2.el7.x86_64
- emacs-filesystem-1:24.3-23.el7_9.1.noarch
- libsecret-0.18.6-1.el7.x86_64
- libxkbfile-1.0.9-3.el7.x86_64
- xdg-utils-1.1.0-0.17.20120809git.el7.noarch