Date: Mon, 23 Dec 2019 17:57:01 +0000 From: Richard P Mackerras <mack63richard@gmail.com> To: Adam McDougall <mcdouga9@egr.msu.edu> Cc: freebsd-stable@freebsd.org Subject: Re: nfs lockd errors after NetApp software upgrade. Message-ID: <CAGfybS-a6n=Pkz8iBPj7BQ3=DbFoZRFENmy2wK3B=HzHm5dVWg@mail.gmail.com> In-Reply-To: <a33ad299-9ec6-0dc9-0926-32f20cb130c5@egr.msu.edu> References: <EBC4AD74-EC62-4C67-AB93-1AA91F662AAC@cs.huji.ac.il> <YQBPR0101MB1427411AFE335E869B9CF022DD530@YQBPR0101MB1427.CANPRD01.PROD.OUTLOOK.COM> <0121E289-D2AE-44BA-ADAC-4814CAEE676F@cs.huji.ac.il> <CAGfybS-3Rvs57=oGFEfii_9a=aWxPr6dEq1Y1LqHbLXK1ZKmXA@mail.gmail.com> <YQBPR0101MB1427F9BE658B9A46C7E08335DD520@YQBPR0101MB1427.CANPRD01.PROD.OUTLOOK.COM> <854B6E5A-C6BC-44B3-A656-FC9B8EF19881@cs.huji.ac.il> <YQBPR0101MB1427F445F1F1EAF382E5131ADD520@YQBPR0101MB1427.CANPRD01.PROD.OUTLOOK.COM> <8770BD0D-4B72-431A-B4F5-A29D4DBA03B1@cs.huji.ac.il> <b1182bbf-fd0b-a23d-1cc4-ddf9513bcb2e@egr.msu.edu> <YQBPR0101MB1427CE52BBA32A888443BFB4DD2D0@YQBPR0101MB1427.CANPRD01.PROD.OUTLOOK.COM> <8A78F67B-C244-45CF-B9BF-D7062669B33B@cs.huji.ac.il> <YQBPR0101MB1427C9D4CF8918F10B6FD400DD2C0@YQBPR0101MB1427.CANPRD01.PROD.OUTLOOK.COM> <AE8F5D6B-E7DA-4AB9-B909-7D362A6A406B@cs.huji.ac.il> <YQBPR0101MB14276E7F9C127374C3E36952DD2F0@YQBPR0101MB1427.CANPRD01.PROD.OUTLOOK.COM> <a33ad299-9ec6-0dc9-0926-32f20cb130c5@egr.msu.edu>
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Hi, We had some bully type workloads emerge when we moved a lot of block storage from old XIV to new all flash 3PAR. I wonder if your IMAP issue might have emerged just because suddenly there was the opportunity with all flash. QOS is good on 9.x ONTAP. If anyone says it’s not then they last looked on 8.x. So I suggest you QOS the IMAP workload. Nobody should be using UDP with NFS unless they have a very specific set of circumstances. TCP was a real step forward. Cheers Richard
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