[lustre-discuss] How to find the performance degrade reason

[Zeeshan Ali Shah]

Dear All,

Suddenly our lustre installation become dead slow, copying data from local
source to lustre result around 20MB/sec before it was above 600 MB.

i checked zfs status -xv and (all pool healths are ok)

1) How to check which OSTs are involved during data write operation ?
2) How to check Meta data (read and write) stats ?
3) any other advice to drill down the reason ..


/Zeeshan
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