Sid, As far as I know, it is safe to run tunefe.lustre on a live file system as long as you aren’t making changes. The man page doesn't show a --print option for tunefs.lustre, but I usually just run "tunefs.lustre --dryrun <device>" to print the info. (Note: I have only done this with ldiskfs backends before, but I don't think zfs should be any different)
--Rick On 2/23/23, 8:07 PM, "lustre-discuss on behalf of Sid Young via lustre-discuss" <[email protected] <mailto:[email protected]> on behalf of [email protected] <mailto:[email protected]>> wrote: G'Day all, I need to review the IP's assigned during the initial mkfs.lustre on ten ZFS based OST's and two ZFS backed MDT's. The ZFS disks are: osthome0/ost0, osthome1/ost1, osthome2/ost2, osthome3/ost3, ostlustre0/ost0, ostlustre1/ost1, ostlustre2/ost2, ostlustre3/ost3, ostlustre4/ost4, ostlustre5/ost5And mdsthome/home mdtlustre/lustre). A few questions.... Is it safe to use tunefs.lustre on the running system to read back the parameters only? or do I have to shut everything down and read from the unmounted filesystems? Is this the correct commands to use for the DMTs? tunefs.lustre --print mdthome/home tunefs.lustre --print mdtlustre/lustre Sid Young _______________________________________________ lustre-discuss mailing list [email protected] http://lists.lustre.org/listinfo.cgi/lustre-discuss-lustre.org
