On Thu, Apr 26, 2018 at 04:58:00PM +0200, Jorge Garcia wrote: > Hi all, > > I tried to add XFS quotas in a fileserver with a capacity of 260TB > (112TB occupied), but after adding the user and project quota options > for this disk in the fstab file and remounting it, the mount rest > hanged running the quota check process. I waited for 20 minutes, but > this process did not finish. Due to this server can't be unavailable, > I had to cancel the process and remove the quota options from fstab > file. > > My question is: Would it be possible to run the quota check process in > the background? If not, how could I get the estimated time to finish > this process? > > Additional info: > > This server is running 3.10.0-693.21.1.el7.x86_64 kernel (CentOS 7.4), > and here the number of inodes: > > Filesystem Inodes IUsed IFree IUse% Mounted on > /dev/sda 5625717696 39592403 5586125293 1% /export FYI, you have 39.5 million allocated inodes. Given optimal inode chunk distribution, that requires (39.5 / 32) million IOs to run a quota scan. If you have spinning disks, then you are looking at 300 IOs/s here, and so somewhere around (1.25 x 10^6 / 3 x 10^2) = ~4200 seconds. So I'd expect quota check to take somewhere between 1.5-2 hours to complete on a filesystem like this. Cheers, Dave. -- Dave Chinner david@xxxxxxxxxxxxx -- 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
