Hi Lance, thanks for the feedback. I guess it also depends how much meta-data you have and whether or not you have zillions of small or larger files. At least I got an idea how long it might take.
All the best Jörg Am Dienstag, 30. April 2019, 07:59:06 BST schrieb Lance Wilson: > 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 _______________________________________________ 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
