On Thu, Jul 02, 2020 at 08:14:01AM +0200, Diego Zuccato wrote: > Il 01/07/20 20:46, Eric Sandeen ha scritto: > > > Hm, yes, worth a look. All 3 have been supported together for quite some > > time now, I didn't know it reacted badly on old filesystems. > > What did the failure look like? > Boot failure saying something about superblock not supporting both > group- and project- quotas at the same time. > I think it's related to > XFS (dm-0): Mounting V4 Filesystem > As I said, it' quite an old fs :) > > xfs_info reports: > meta-data=/dev/sdb1 isize=256 agcount=41, agsize=268435455 blks > = sectsz=512 attr=2, projid32bit=0 > = crc=0 finobt=0, sparse=0, rmapbt=0 > = reflink=0 > data = bsize=4096 blocks=10742852608, imaxpct=5 > = sunit=0 swidth=0 blks > naming =version 2 bsize=4096 ascii-ci=0, ftype=0 > log =internal log bsize=4096 blocks=521728, version=2 > = sectsz=512 sunit=0 blks, lazy-count=1 > realtime =none extsz=4096 blocks=0, rtextents=0 > > Too bad it's a production server (serving the home for the cluster) and > I can't down it now. > I missed how this went from a question around interaction between user and project quotas to reporting of a problem associated with enablement of group+project quotas and an old fs. The above shows a v4 superblock (crc=0), which means project and group quotas share an inode and thus are mutually exclusive. It sounds to me that the problem is simply that you're specifying a set of incompatible mount options on a v4 fs, but you haven't really stated the problem clearly. I.e.: # mount /dev/test/scratch /mnt/ -o gquota,pquota mount: /mnt: wrong fs type, bad option, bad superblock on /dev/mapper/test-scratch, missing codepage or helper program, or other error. # dmesg | tail [ 247.554345] XFS (dm-3): Super block does not support project and group quota together We have to fail in this scenario (as opposed to randomly picking one) because either one can work for any mount (presumably wiping out the old quotas when changing from one mode to the other across a mount). Brian > -- > Diego Zuccato > DIFA - Dip. di Fisica e Astronomia > Servizi Informatici > Alma Mater Studiorum - Università di Bologna > V.le Berti-Pichat 6/2 - 40127 Bologna - Italy > tel.: +39 051 20 95786 >
