Date: Fri, 31 May 2019 21:50:10 +0000 From: Rick Macklem <rmacklem@uoguelph.ca> To: "freebsd-fs@freebsd.org" <freebsd-fs@FreeBSD.org> Subject: RFC: should an incremental reload of exports for mountd be optional? Message-ID: <QB1PR01MB2643E5186098E2AF14934866DD190@QB1PR01MB2643.CANPRD01.PROD.OUTLOOK.COM>
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Hi, I have created a patch for PR#237860 that improves the time it takes to rel= oad the exports file(s) for an NFS file server from seconds->milliseconds by on= ly doing system calls for the changes to the exports file(s). (Assumes each reload i= ncludes changes to only a small fraction of the entries.) I made it a non-default option of "-I", but asomers@ asked why it needed to= be optional. Basically, I made it optional because I felt the patch might still be buggy= and not handle some case of an exports file change that I missed. However, I can see the argument of making it non-optional (or optional but = enabled by default) so that sysadmins don't need to add "-I" to avoid long periods = where the nfsd threads are suspended. If it is broken, the deamon would need to be restarted to do a full reload,= but that would also be the case if a sysadmin specified the "-I" option. So, the question is... "do you think this should be an option or just alway= s enabled?". Thanks , rick
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