Hi Aurélien Thank you for your prompt answer.
> This reminds me of similar issues we met, but I could not find the > corresponding tickets (but there is definitely JIRAs for them) I'll check immediately. > What is your changelog creation rate? On this file system the creation rate is not so high. Exactly I cannot answer but from the logs of RBH I would said max. ~ 1000/2000 entries/s but often less. > What's your MDS size? mdt and ost are on different servers: /dev/mapper/lnec-mdt 2.7T 37G 2.7T 2% /rw/mnt/lustre/lnec-mdt /dev/mapper/mgt 1008M 34M 974M 4% /rw/mnt/lustre/mgt > You probably had too many records created or too many records > outstanding in your llog. Do you know what was your highest number of > records in the changelog at one time? > Before clear and de-register the changelog we had the following output: # cat /proc/fs/lustre/mdd/lnec-MDT0000/changelog_users current index: 4586290995 ID index cl3 4586260190 4586290995-4586260190=30805 records Following some other output we had when we stop changelog: monchmds01#cat /proc/fs/lustre/mdd/lnec-MDT0000/changelog_users current index: 4586290995 ID index cl3 4586260190 monchmds01#lctl --device lnec-MDT0000 changelog_deregister cl3 error: changelog_deregister: No space left on device monchmds01#cat /proc/fs/lustre/mdd/lnec-MDT0000/changelog_users current index: 4586291186 ID index monchmds01# I cannot understand how 30805 records can fill the device but maybe I'm misunderstanding something. Carmelo -- ---------------------------------------------------------------------- Carmelo Ponti System Engineer CSCS Swiss Center for Scientific Computing Via Trevano 131 Email: [email protected] CH-6900 Lugano http://www.cscs.ch Phone: +41 91 610 82 15/Fax: +41 91 610 82 82 ---------------------------------------------------------------------- ------------------------------------------------------------------------------ Monitor 25 network devices or servers for free with OpManager! OpManager is web-based network management software that monitors network devices and physical & virtual servers, alerts via email & sms for fault. Monitor 25 devices for free with no restriction. Download now http://ad.doubleclick.net/ddm/clk/292181274;119417398;o _______________________________________________ robinhood-support mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/robinhood-support
