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
