Hi all, I am still new to Lustre, so please let me know if I should send this message to devel-list.
This week, I tried to run LFSCK over a very small cluster configuration (1 mdt and 3 osts). In this Lustre, I used about 300K inodes. It took me about 80 mins to finish a LFSCK run. And, more importantly, while I am running LFSCK, on both MDT and OSTS, the CPU utilization is 100%, taken by the lfsck thread. I understand that lfsck is operating in an online mode, so it is slow. But, I am wondering is there any way to accelerate this? Especially if I am allowed to run it offline, for example, during weekly maintenance. After checking the lfsck kernel logs, I noticed that in the phase2 scanning on OSTs, there is an 30 seconds interval between querying the MDTs. I am wondering is there any reason to have this 30 seconds interval, and will lfsck on OSTs be faster if we remove such 30 seconds interval? Thanks, - Dong _______________________________________________ lustre-discuss mailing list lustre-discuss@lists.lustre.org http://lists.lustre.org/listinfo.cgi/lustre-discuss-lustre.org
