LVM - poor performance detection

[Trevor]

I'm a big fan of event logs.  We know that the linux logging system can 
provide a high-powered window to look into what's happening on a Linux
system.

Traditionally, I've depended on Linux event logs to record system activities,
errors, warnings, and informational mesages, that are generated by the 
Linux kernel, applications, and services.

I don't think of event logs when it comes to identifying performance bottlenecks.
Any thoughts on using journald to keep an eye on the performance of an LVM
on Linux system?

[Chetan_Tiwary_]

@Trevor journald logs can give you a hint for eample about checksum erros, lvm metadata corruption, state D / hung, timeout,  blocked for more than xxx seconds ,  but it is not a performance monitoring tool.