topic DFM unaligned_writes ? in Active IQ Unified Manager Discussions

DFM unaligned_writes ?

jjeziorny — Thu, 05 Jun 2025 06:45:25 GMT

Hi,

Is it possible to get info from counters"unaligned_writes" and "write_align_histo:" via the DFM CLI?

I'm trying to find an easy way to build a list of all LUNs that are missaligned (ie. writing in histo other than 0)

Regards

Juliano

marcinl — Tue, 20 Sep 2011 15:04:45 GMT

Not exatly to display those counters but you can get misaligned LUNs by using this command:

dfm perf diag troubleshoot -a controller_name -s "start date and time" -e "end date and time"

Format for date and time is

YYYY-mm-dd HH:MM:SS

jjeziorny — Tue, 20 Sep 2011 15:41:23 GMT

Thanks Marcinl,

That's useful info.

I managed to get the counters I wanted out, just need to work on building them into a more usefull output now.

dfm perf export counter add lun:unaligned_writes

That will add the "lun:unaligned_writes" to the output of dfm perf export

Regards

Juliano