Oracle Solaris ZFS File System (MOSC)

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what's right value for sd_io_time for JBOD.

edited Aug 19, 2017 5:01AM in Oracle Solaris ZFS File System (MOSC) 1 commentAnswered

I have zfs pool based on jbod, my configuration is:  8 x RAIDZ2(8D+2P) + 3 x mirror SLOG + 4 x L2ARC

Recently one of mirrored slog disk become unavailable and all I/O was frozen for 3 minutes. I think it's not acceptable for applications such as postgresql/oracle or other I/O sensitive applications.

I looked at default settings of solaris based distributions such as SmartOS, which always place zfs pool on jbod  and there best practices to set sd_io_time in 10 seconds, so the disk is marked failed within 50 seconds (sd_io_time * sd_retry_count == 50)

I would like to know your opinion about this issue.

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