On Tue, Jun 19, 2018 at 02:21:15PM -0500, Eric Sandeen wrote: > On 6/19/18 11:18 AM, Darrick J. Wong wrote: > > On Tue, Jun 19, 2018 at 02:27:29PM +0200, swadmin - levigo.de wrote: > >> Hi @all > >> I have a problem with mounting a large XFS filesystem which takes about > >> 8-10 minutes. > >> > >> > >> > >> :~# df -h /graylog_data > >> Filesystem Size Used Avail Use% Mounted on > >> /dev/mapper/vgdata-graylog_data 11T 5.0T 5.1T 50% /graylog_data > >> > >> ---- > >> > >> :~# xfs_info /dev/mapper/vgdata-graylog_data > >> meta-data=/dev/mapper/vgdata-graylog_data isize=512 agcount=40805, > >> agsize=65792 blks > > > > 41,000 AGs is a lot of metadata to load. Did someone growfs a 1G fs > > into a 11T fs? > > <answer: yes, they did> > > Let me state that a little more clearly: this is a badly mis-administered > filesystem; 40805 x 256MB AGs is nearly unusable, as you've seen. > > If at all possible I would start over with a rationally-created filesystem > and migrate the data. Considering *a lot* of folks may typically follow the above "trap", wouldn't it be wise for userspace to complain or warn when the user may want to do something stupid like this? Otherwise I cannot see how we could possibly conceive that this is badly administered filesystem. Luis -- To unsubscribe from this list: send the line "unsubscribe linux-xfs" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
