Date: Wed, 28 Nov 2012 10:47:43 +0200 From: Andriy Gapon <avg@FreeBSD.org> To: Josh Beard <josh@signalboxes.net> Cc: freebsd-fs@FreeBSD.org Subject: Re: ZFS: Panic when attempting to delete certain data Message-ID: <50B5CFAF.8070306@FreeBSD.org> In-Reply-To: <CAHDrHSvsrwx5qEimdx7e6eHoXTLwQ1AeH80Nx8izA7BTfFb8Jg@mail.gmail.com> References: <CAHDrHStcfSJ-9ueSV%2BFujEsmAK3zMX2CAGVD6Xz_2gJAThu5Kg@mail.gmail.com> <50B50B04.8020109@FreeBSD.org> <CAHDrHSteXO2pzkUtG0WHcgChsyXiBk2of4P0gR7ccY5srWNdew@mail.gmail.com> <50B52CEC.9080208@FreeBSD.org> <CAHDrHSvsrwx5qEimdx7e6eHoXTLwQ1AeH80Nx8izA7BTfFb8Jg@mail.gmail.com>
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on 27/11/2012 23:47 Josh Beard said the following:
> Thanks! Here we go:
>
> (kgdb) frame 7
> #7 0xffffffff80ebd45a in zfs_freebsd_remove (ap=Variable "ap" is not available.
> ) at
> /usr/src/sys/modules/zfs/../../cddl/contrib/opensolaris/uts/common/fs/zfs/zfs_vnops.c:1855
> 1855 dmu_tx_hold_sa(tx, xzp->z_sa_hdl, B_FALSE);
> (kgdb) list
> 1850 &xattr_obj, sizeof (xattr_obj));
> 1851 if (error == 0 && xattr_obj) {
> 1852 error = zfs_zget(zfsvfs, xattr_obj, &xzp);
> 1853 ASSERT3U(error, ==, 0);
> 1854 dmu_tx_hold_sa(tx, zp->z_sa_hdl, B_TRUE);
> 1855 dmu_tx_hold_sa(tx, xzp->z_sa_hdl, B_FALSE);
> 1856 }
> 1857
> 1858 mutex_enter(&zp->z_lock);
> 1859 if ((acl_obj = zfs_external_acl(zp)) != 0 && may_delete_now)
That's what I suspected.
> (kgdb) frame 7
> #7 0xffffffff80ebd45a in zfs_freebsd_remove (ap=Variable "ap" is not available.
> ) at
> /usr/src/sys/modules/zfs/../../cddl/contrib/opensolaris/uts/common/fs/zfs/zfs_vnops.c:1855
> 1855 dmu_tx_hold_sa(tx, xzp->z_sa_hdl, B_FALSE);
> (kgdb) info local
> No locals.
> (kgdb)
A little bit unfortunate.
> # ls -Pi /DSDK12_NHR.pax.gz (symlink to ../Archive.pax.gz)
> 249868
> ./Imaging/Packages/DSDK12_NHR_2012-02-23.pkg/Contents/Resources/DSDK12_NHR.pax.gz
>
> # zdb -ddddd store/tdxs1 249868
> Dataset store/tdxs1 [ZPL], ID 109, cr_txg 35014, 1.33T, 1106389 objects, rootbp
> DVA[0]=<0:8000204400:400> DVA[1]=<0:30800644400:400> [L0 DMU objset] fletcher4
> lzjb LE contiguous unique double size=800L/200P birth=1167710L/1167710P
> fill=1106389 cksum=1966704b59:757ae6cb615:134bfd597bca9:254b2ee348393d
>
> Object lvl iblk dblk dsize lsize %full type
> 249868 1 16K 512 0 512 0.00 ZFS plain file
> 201 bonus System attributes
> dnode flags: USERUSED_ACCOUNTED
> dnode maxblkid: 0
> path
> /tech/2012-09-14-01-00/Imaging/Packages/DSDK12_NHR_2012-02-23.pkg/Contents/Resources/DSDK12_NHR.pax.gz
> uid 300002
> gid 80
> atime Tue Nov 27 14:43:00 2012
> mtime Thu Feb 23 08:59:21 2012
> ctime Fri Sep 14 01:12:37 2012
> crtime Fri Sep 14 01:11:50 2012
> gen 81430
> mode 120755
> size 17
> parent 249866
> links 1
> pflags 40800000104
> xattr 230
Could you please now run 'zdb -ddddd store/tdxs1 230' ?
--
Andriy Gapon
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