freebsd stable - Dec 2016 - [ZFS] files in a weird situtation

On Sat, Dec 17, 2016 at 3:01 PM, David Marec <david.marec at
davenulle.org>
wrote:
> [I had first posted onto the Forum about this issue]
>
> Two months ago,
>
> - next to a call to |`||delete-old-libs`| or `install world`, I don't
> really know -
>
> my box that is following FreeBSD-11 Stable ran into a weird situation.
>
> A set of files, especially `/lib/libjail.so.1` are in both states
> `existing` and `not existing`:
>
> I means:
>
>         david:~>cp ~david/libjail.so.1 /lib
>         cp: /lib/libjail.so.1: File exists
>
> But:
>
>         david:~>ls /lib/libjail.so.1
>         ls: /lib/libjail.so.1: No such file or directory
>         david:~>find /lib -name "libjail.so.1" -print
> /lib/libjail.so.1
>         david:~>find /lib -name "libjail.so.1" -ls
>         find: /lib/libjail.so.1: No such file or directory
>
> With deeper investigation, the file is in fact mapped to an `inode`:
>
>         root at dmarec:~ # ls -di /lib
>         13 /lib
>         root at dmarec:~ # zdb -dddd zroot/ 13 | grep libjail.so.1
>         libjail.so.1 = 10552574 (type: Regular File)
>
> Which fails with `zdb` on:
>
>         root at dmarec:~ # zdb -dddd zroot/ 10552574
>         Dataset zroot [ZPL], ID 21, cr_txg 1, 114G, 2570002 objects, rootbp
>         DVA[0]=<0:b97d6ea00:200> DVA[1]=<0:1c212b0400:200> [L0
DMU objset]
>         fletcher4 lz4 LE contiguous unique double size=800L/200P
>         birth=3852240L/3852240P fill=2570002
> cksum=17b78fb7e4:7c87a526a07:16251edfaae60:2ce0c5734ccf2f
>
>     Object  lvl   iblk   dblk  dsize  lsize   %full type
>         zdb: dmu_bonus_hold(10552574) failed, errno 2
>
>
> `stat (2)` returns ENOENT when checking for the file:
>          david:~>truss stat -L /lib/libjail.so.1
>         ...
>         stat("/lib/libjail.so.1",0x7fffffffe7e8)         ERR#2
'No such
> file or
>         directory'    david:~>truss stat -L /lib/libjail.so.1
>
> A pass with `zfs scrub` didn't help.
>
> Any clue is welcome. What's that `dmu_bonus_hold` stands for ?
>
I am unable to understand what your intent is here.  If you wish to delete
it, you can do:

find . -inum 10552574 -exec rm {} \;

-- 
Adam

On 18.12.2016 01:38, Adam Vande More wrote:
>
> I am unable to understand what your intent is here.  If you wish to 
> delete it, you can do:
>
> find . -inum 10552574 -exec rm {} \;
It fails on ?No such file or directory?.

This file missing, not much works.
I have installed a copy into `/usr/lib` to make the system run again.

So, I can't install a new world: `install -C` fails in the same way.



-- 
David Marec
https://lapinbilly.eu

find also has -delete which avoids the exec overhead, not much of an impact
here but worth noting if you're removing lots.

On 18 December 2016 at 00:38, Adam Vande More <amvandemore at gmail.com>
wrote:
> On Sat, Dec 17, 2016 at 3:01 PM, David Marec <david.marec at
davenulle.org>
> wrote:
>
> > [I had first posted onto the Forum about this issue]
> >
> > Two months ago,
> >
> > - next to a call to |`||delete-old-libs`| or `install world`, I
don't
> > really know -
> >
> > my box that is following FreeBSD-11 Stable ran into a weird situation.
> >
> > A set of files, especially `/lib/libjail.so.1` are in both states
> > `existing` and `not existing`:
> >
> > I means:
> >
> >         david:~>cp ~david/libjail.so.1 /lib
> >         cp: /lib/libjail.so.1: File exists
> >
> > But:
> >
> >         david:~>ls /lib/libjail.so.1
> >         ls: /lib/libjail.so.1: No such file or directory
> >         david:~>find /lib -name "libjail.so.1" -print
> > /lib/libjail.so.1
> >         david:~>find /lib -name "libjail.so.1" -ls
> >         find: /lib/libjail.so.1: No such file or directory
> >
> > With deeper investigation, the file is in fact mapped to an `inode`:
> >
> >         root at dmarec:~ # ls -di /lib
> >         13 /lib
> >         root at dmarec:~ # zdb -dddd zroot/ 13 | grep libjail.so.1
> >         libjail.so.1 = 10552574 (type: Regular File)
> >
> > Which fails with `zdb` on:
> >
> >         root at dmarec:~ # zdb -dddd zroot/ 10552574
> >         Dataset zroot [ZPL], ID 21, cr_txg 1, 114G, 2570002 objects,
> rootbp
> >         DVA[0]=<0:b97d6ea00:200> DVA[1]=<0:1c212b0400:200>
[L0 DMU
> objset]
> >         fletcher4 lz4 LE contiguous unique double size=800L/200P
> >         birth=3852240L/3852240P fill=2570002
> > cksum=17b78fb7e4:7c87a526a07:16251edfaae60:2ce0c5734ccf2f
> >
> >     Object  lvl   iblk   dblk  dsize  lsize   %full type
> >         zdb: dmu_bonus_hold(10552574) failed, errno 2
> >
> >
> > `stat (2)` returns ENOENT when checking for the file:
> >          david:~>truss stat -L /lib/libjail.so.1
> >         ...
> >         stat("/lib/libjail.so.1",0x7fffffffe7e8)        
ERR#2 'No such
> > file or
> >         directory'    david:~>truss stat -L /lib/libjail.so.1
> >
> > A pass with `zfs scrub` didn't help.
> >
> > Any clue is welcome. What's that `dmu_bonus_hold` stands for ?
> >
>
> I am unable to understand what your intent is here.  If you wish to delete
> it, you can do:
>
> find . -inum 10552574 -exec rm {} \;
>
> --
> Adam
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