Am Freitag, 24. Februar 2012 schrieb Stan Hoeppner: > On 2/24/2012 10:20 AM, Martin Steigerwald wrote: > > Am Freitag, 24. Februar 2012 schrieb Richard Ems: > >>>> MOUNT > >>>> On mount I will use the options > >>>> > >>>> mount -o noatime,nobarrier,nofail,logbufs=8,logbsize=256k,inode64 > >>>> /dev/sdX1 /mount_point > >>> > >>> I think that the logbufs/logbsize option matches the default here. > >>> Use delaylog if applicable. See the xfs FAQ. > >> > >> Yes, if I trust the mount manual page, it states "The default value > >> is 8 buffers for any recent kernel." . I suppose 3.2.6 is "a recent > >> kernel", so this could be avoided, but having it explicitly on the > >> mkfs.xfs line does not hurt, or? > >> And for logbsize: "The default value for any recent kernel is > >> 32768." > >> > >> But then at the end of the manual page for mount it says "December > >> 2004", so how actual is this information? Can the default mount > >> values be shown by running mount with some verbose and dry-run > >> parameters? > > > > Does cat /proc/mounts show them? /proc/mounts is more detailed than > > mount or mount -l. > > Vanilla kernel.org 3.2.6: > > ~$ cat /proc/mounts > /dev/sda7 /samba xfs rw,relatime,attr2,delaylog,noquota 0 0 > > It doesn't show the default logbufs and logbsize values. I asked about > this specific issue over a year ago, because the documentation is > inconsistent, and you can't get the default values out of a running > system. If you can I don't know how. If someone stated a method, I > can't recall it. :( > > I do recall Dave, IIRC, saying something to the effect of 'just use the > defaults, as they are 8 and 256K in recent kernels anyway'. That's not > a direct quote, but my recollection. As I wrote it I thought about that for XFS the option might not be displayed. Cause I remember having seen something similar quite some time ago. With NFS this works quite well, also with Ext4 and vfat it seems to me. I think it would be good to include default options in /proc/mounts. -- Martin 'Helios' Steigerwald - http://www.Lichtvoll.de GPG: 03B0 0D6C 0040 0710 4AFA B82F 991B EAAC A599 84C7 _______________________________________________ xfs mailing list xfs@xxxxxxxxxxx http://oss.sgi.com/mailman/listinfo/xfs
