Hi Jörg, Our 1Pb array took up to 3 days when we did this. It might be faster for you but it took a very long time with little to no indication of how long it would take. Just a word of caution though, we didn’t do an offline scan once too long and that scan took much longer than previously. Good luck!
Lance On Tue, 30 Apr 2019 at 7:34 am, Jörg Saßmannshausen < sassy-w...@sassy.formativ.net> wrote: > Dear all, > > just a quick question regarding GPFS: > we are running a 9 PB GPFS storage space at work of which around 6 -7 PB > are > used. It is a single file system but with different file-sets installed on > it. > During our routine checks we found that: > $ mmhealth node show -n all > reports this problem: > > fserrinvalid(FOO) > > (where FOO is being the file system). > > Our vendor suggested to do an online check: > > $ mmfsck FOO -o -y > > which is still running. > Today the vendor suggested to take the GPFS file system offline and run > the above > command without the -o option, which would lead to an outage. > > So my simply question is: has anybody ever done that on such a large file > set > and how long roughly would that take? Every time I am asking this question > I > get told: a long time! > Our vendor told us we could use for example > --threads 128 > as oppose to the normally used 16 threads, so I am aware my mileage will > vary > here a bit, but I would just like a guestimate of the time. > > Many thanks for your help here! > > All the best from London > > Jörg > > _______________________________________________ > Beowulf mailing list, Beowulf@beowulf.org sponsored by Penguin Computing > To change your subscription (digest mode or unsubscribe) visit > https://beowulf.org/cgi-bin/mailman/listinfo/beowulf > -- Cheers, Lance -- Dr Lance Wilson Characterisation Virtual Laboratory (CVL) Coordinator & Senior HPC Consultant Ph: 03 99055942 (+61 3 99055942) Mobile: 0437414123 (+61 4 3741 4123) Multi-modal Australian ScienceS Imaging and Visualisation Environment (www.massive.org.au) Monash University
_______________________________________________ Beowulf mailing list, Beowulf@beowulf.org sponsored by Penguin Computing To change your subscription (digest mode or unsubscribe) visit https://beowulf.org/cgi-bin/mailman/listinfo/beowulf
