ZFS: mkdir: File too large

[Slawa Olhovchenkov]

On Thu, Feb 02, 2017 at 02:50:01PM +0000, Steven Hartland wrote:

> On 02/02/2017 14:24, Slawa Olhovchenkov wrote:
> >> Try tracing SET_ERROR for EFBIG with dtrace to determine underlying
> >> cause.
> >    0  37281                   none:set-error set-error 27
> >                zfs.ko`zfs_freebsd_mkdir+0x3a3
> >                kernel`VOP_MKDIR_APV+0x8a
> >                kernel`kern_mkdirat+0x1e1
> >                kernel`amd64_syscall+0x50e
> >                kernel`0xffffffff8079499b
> >
> > (kgdb) x zfs_freebsd_mkdir+0x3a3
> > 0xffffffff81171813 <zfs_freebsd_mkdir+931>:     0xb4b78b45
> > Current language:  auto; currently minimal
> > (kgdb) info line *0xffffffff81171813
> > Line 2145 of "/usr/src/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/zfs_vnops.c" starts at address 0xffffffff81171813 <zfs_freebsd_mkdir+931> and ends at 0xffffffff8117181a <zfs_freebsd_mkdir+938>.
> >
> >    2138          /*
> >    2139           * Add a new entry to the directory.
> >    2140           */
> >    2141          getnewvnode_reserve(1);
> >    2142          tx = dmu_tx_create(zfsvfs->z_os);
> >    2143          dmu_tx_hold_zap(tx, dzp->z_id, TRUE, dirname);
> >    2144          dmu_tx_hold_zap(tx, DMU_NEW_OBJECT, FALSE, NULL);
> >    2145          fuid_dirtied = zfsvfs->z_fuid_dirty;
> >    2146          if (fuid_dirtied)
> >    2147                  zfs_fuid_txhold(zfsvfs, tx);
> >    2148          if (!zfsvfs->z_use_sa && acl_ids.z_aclp->z_acl_bytes > ZFS_ACE_SPACE) {
> >    2149                  dmu_tx_hold_write(tx, DMU_NEW_OBJECT, 0,
> >    2150                      acl_ids.z_aclp->z_acl_bytes);
> >    2151          }
> >
> > PS: Please, CC me
> What OS ver as those offsets seem odd?

I am try trace every call in zfs_freebsd_mkdir.
This is dmu_tx_assign:

  3  29599             dmu_tx_assign:return ret 27

  2153          dmu_tx_hold_sa_create(tx, acl_ids.z_aclp->z_acl_bytes +
  2154              ZFS_SA_BASE_ATTR_SIZE);
  2155  
  2156          error = dmu_tx_assign(tx, TXG_WAIT);
  2157          if (error) {
  2158                  zfs_acl_ids_free(&acl_ids);
  2159                  dmu_tx_abort(tx);
  2160                  getnewvnode_drop_reserve();
  2161                  ZFS_EXIT(zfsvfs);
  2162                  return (error);
  2163          }