On Fri, Jul 27, 2018 at 1:32 PM, Hu Bert <[email protected]> wrote:
> 2018-07-27 9:22 GMT+02:00 Pranith Kumar Karampuri <[email protected]>: > > > > > > On Fri, Jul 27, 2018 at 12:36 PM, Hu Bert <[email protected]> > wrote: > >> > >> 2018-07-27 8:52 GMT+02:00 Pranith Kumar Karampuri <[email protected] > >: > >> > > >> > > >> > On Fri, Jul 27, 2018 at 11:53 AM, Hu Bert <[email protected]> > >> > wrote: > >> >> > >> >> > Do you already have all the 190000 directories already created? If > >> >> > not > >> >> > could you find out which of the paths need it and do a stat > directly > >> >> > instead > >> >> > of find? > >> >> > >> >> Quite probable not all of them have been created (but counting how > >> >> much would take very long...). Hm, maybe running stat in a double > loop > >> >> (thx to our directory structure) would help. Something like this (may > >> >> be not 100% correct): > >> >> > >> >> for a in ${100..999}; do > >> >> for b in ${100..999}; do > >> >> stat /$a/$b/ > >> >> done > >> >> done > >> >> > >> >> Should run stat on all directories. I think i'll give this a try. > >> > > >> > > >> > Just to prevent these served from a cache, it is probably better to do > >> > this > >> > from a fresh mount? > >> > > >> > -- > >> > Pranith > >> > >> Good idea. I'll install glusterfs client on a little used machine, so > >> there should be no caching. Thx! Have a good weekend when the time > >> comes :-) > > > > > > If this proves effective, what you need to also do is unmount and mount > > again, something like: > > > > mount > > for a in ${100..999}; do > > for b in ${100..999}; do > > stat /$a/$b/ > > done > > done > > unmount > > I'll see what is possible over the weekend. > > Btw.: i've seen in the munin stats that the disk utilization for > bricksdd1 on the healthy gluster servers is between 70% (night) and > almost 99% (daytime). So it looks like that the basic problem is the > disk which seems not to be able to work faster? If so (heal) > performance won't improve with this setup, i assume. It could be saturating in the day. But if enough self-heals are going on, even in the night it should have been close to 100%. > Maybe switching > to RAID10 (conventional hard disks), SSDs or even add 3 additional > gluster servers (distributed replicated) could help? > It definitely will give better protection against hardware failure. Failure domain will be lesser. -- Pranith
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