# orphan blob or what?

6 messages from 2012-11-09 to 2012-11-11. Participants: bruce, Tomas Carnecky, Robertson, Bruce E.
Thread: https://gitlist.dev/t/32044

## bruce, 2012-11-09 00:24

Subject: orphan blob or what?
Message-ID: <87a9urlj23.fsf@intel.com>
URL: https://gitlist.dev/e/87a9urlj23.fsf%40intel.com

```
In today's and older clones of https://github.com/mirrors/linux.git I
find this object, 6fa98ea0ae40f9a38256f11e5dc270363f785aee, that I can't
figure out how to eliminate^h^h^h^h^h^h^h^h^hget rid of. I don't see it
in 'git fsck', 'git gc --aggressive --prune' doesn't seem to prune it,
can't see it via 'git log'. And yet

linux/.git/objects/pack$ git verify-pack -v *.idx | grep 6fa98ea0ae40f9a38256f11e5dc270363f785aee
6fa98ea0ae40f9a38256f11e5dc270363f785aee blob   1519697 124840 515299673
8231eaa31ce1107c1463deb6ec33f61618aedbb9 blob   67 63 515424513 1 6fa98ea0ae40f9a38256f11e5dc270363f785aee
f21a8c1b9d47736fa4e27def66f04b9fe2b4bc53 blob   90 83 515424576 1 6fa98ea0ae40f9a38256f11e5dc270363f785aee

Thanks,
bruce

```

## Tomas Carnecky, 2012-11-09 01:08

Subject: Re: orphan blob or what?
Message-ID: <1352423287-ner-8337@calvin>
URL: https://gitlist.dev/e/1352423287-ner-8337%40calvin
In-Reply-To: <87a9urlj23.fsf@intel.com>

```
On Thu, 08 Nov 2012 16:24:36 -0800, bruce <bruce.e.robertson@intel.com> wrote:
> In today's and older clones of https://github.com/mirrors/linux.git I
> find this object, 6fa98ea0ae40f9a38256f11e5dc270363f785aee, that I can't
> figure out how to eliminate^h^h^h^h^h^h^h^h^hget rid of. I don't see it
> in 'git fsck', 'git gc --aggressive --prune' doesn't seem to prune it,
> can't see it via 'git log'. And yet
> 
> linux/.git/objects/pack$ git verify-pack -v *.idx | grep 6fa98ea0ae40f9a38256f11e5dc270363f785aee
> 6fa98ea0ae40f9a38256f11e5dc270363f785aee blob   1519697 124840 515299673
> 8231eaa31ce1107c1463deb6ec33f61618aedbb9 blob   67 63 515424513 1 6fa98ea0ae40f9a38256f11e5dc270363f785aee
> f21a8c1b9d47736fa4e27def66f04b9fe2b4bc53 blob   90 83 515424576 1 6fa98ea0ae40f9a38256f11e5dc270363f785aee

Commit dee0bb9 (ASoC: Mark WM8962 Additional Control 4 register as volatile,
2010-09-29) references this blob.

```

## Robertson, Bruce E, 2012-11-09 06:23

Subject: RE: orphan blob or what?
Message-ID: <83A029C68381A840ACDE22C814EE27492247BBB5@ORSMSX101.amr.corp.intel.com>
URL: https://gitlist.dev/e/83A029C68381A840ACDE22C814EE27492247BBB5%40ORSMSX101.amr.corp.intel.com
In-Reply-To: <87a9urlj23.fsf@intel.com>

```
Please excuse one inaccuracy: I did a 'git pull' not a clone. So it could be an old .idx file at my end possibly.

Thanks,
bruce

-----Original Message-----
From: Robertson, Bruce E 
Sent: Thursday, November 08, 2012 4:25 PM
To: git@vger.kernel.org
Subject: orphan blob or what?

In today's and older clones of https://github.com/mirrors/linux.git I find this object, 6fa98ea0ae40f9a38256f11e5dc270363f785aee, that I can't figure out how to eliminate^h^h^h^h^h^h^h^h^hget rid of. I don't see it in 'git fsck', 'git gc --aggressive --prune' doesn't seem to prune it, can't see it via 'git log'. And yet

linux/.git/objects/pack$ git verify-pack -v *.idx | grep 6fa98ea0ae40f9a38256f11e5dc270363f785aee
6fa98ea0ae40f9a38256f11e5dc270363f785aee blob   1519697 124840 515299673
8231eaa31ce1107c1463deb6ec33f61618aedbb9 blob   67 63 515424513 1 6fa98ea0ae40f9a38256f11e5dc270363f785aee
f21a8c1b9d47736fa4e27def66f04b9fe2b4bc53 blob   90 83 515424576 1 6fa98ea0ae40f9a38256f11e5dc270363f785aee

Thanks,
bruce

```

## bruce, 2012-11-09 19:37

Subject: Re: orphan blob or what?
Message-ID: <87625elg9r.fsf@intel.com>
URL: https://gitlist.dev/e/87625elg9r.fsf%40intel.com
In-Reply-To: <1352423287-ner-8337@calvin>

```
Tomas Carnecky <tomas.carnecky@gmail.com> writes:

Just idiocy on my part. Thanks.

> On Thu, 08 Nov 2012 16:24:36 -0800, bruce <bruce.e.robertson@intel.com> wrote:
>> In today's and older clones of https://github.com/mirrors/linux.git I
>> find this object, 6fa98ea0ae40f9a38256f11e5dc270363f785aee, that I can't
>> figure out how to eliminate^h^h^h^h^h^h^h^h^hget rid of. I don't see it
>> in 'git fsck', 'git gc --aggressive --prune' doesn't seem to prune it,
>> can't see it via 'git log'. And yet
>> 
>> linux/.git/objects/pack$ git verify-pack -v *.idx | grep 6fa98ea0ae40f9a38256f11e5dc270363f785aee
>> 6fa98ea0ae40f9a38256f11e5dc270363f785aee blob   1519697 124840 515299673
>> 8231eaa31ce1107c1463deb6ec33f61618aedbb9 blob   67 63 515424513 1 6fa98ea0ae40f9a38256f11e5dc270363f785aee
>> f21a8c1b9d47736fa4e27def66f04b9fe2b4bc53 blob   90 83 515424576 1 6fa98ea0ae40f9a38256f11e5dc270363f785aee
>
> Commit dee0bb9 (ASoC: Mark WM8962 Additional Control 4 register as volatile,
> 2010-09-29) references this blob.

```

## Tomas Carnecky, 2012-11-09 21:41

Subject: Re: orphan blob or what?
Message-ID: <1352497275-ner-6808@calvin>
URL: https://gitlist.dev/e/1352497275-ner-6808%40calvin
In-Reply-To: <87625elg9r.fsf@intel.com>

```
On Fri, 09 Nov 2012 11:37:04 -0800, bruce <bruce.e.robertson@intel.com> wrote:
> Tomas Carnecky <tomas.carnecky@gmail.com> writes:
> 
> Just idiocy on my part. Thanks.
> 
> > On Thu, 08 Nov 2012 16:24:36 -0800, bruce <bruce.e.robertson@intel.com> wrote:
> >> In today's and older clones of https://github.com/mirrors/linux.git I
> >> find this object, 6fa98ea0ae40f9a38256f11e5dc270363f785aee, that I can't
> >> figure out how to eliminate^h^h^h^h^h^h^h^h^hget rid of. I don't see it
> >> in 'git fsck', 'git gc --aggressive --prune' doesn't seem to prune it,
> >> can't see it via 'git log'. And yet
> >> 
> >> linux/.git/objects/pack$ git verify-pack -v *.idx | grep 6fa98ea0ae40f9a38256f11e5dc270363f785aee
> >> 6fa98ea0ae40f9a38256f11e5dc270363f785aee blob   1519697 124840 515299673
> >> 8231eaa31ce1107c1463deb6ec33f61618aedbb9 blob   67 63 515424513 1 6fa98ea0ae40f9a38256f11e5dc270363f785aee
> >> f21a8c1b9d47736fa4e27def66f04b9fe2b4bc53 blob   90 83 515424576 1 6fa98ea0ae40f9a38256f11e5dc270363f785aee
> >
> > Commit dee0bb9 (ASoC: Mark WM8962 Additional Control 4 register as volatile,
> > 2010-09-29) references this blob.

It wasn't easy to find the commit. First I figured out at which path that file
was stored. Using git log -S'wm8962_reg[WM8962_MAX_REGISTER + 1]' I quickly
determined that the file was somewhere in sound/, more specifically
sound/soc/codecs/wm8962-tables.c. However a 'git log --
sound/soc/codecs/wm8962-tables.c' did not show any commit. That was strange,
because 'git log -S'WM8962_MAX_REGISTER + 1' --name-status --
sound/soc/codecs/' clearly shows that the file existed at some point in the
past. The commit is hidden from a simple 'git log' due to 'History
Simplification'. See the git-log man page. I added --full-history -p to the log
command, and searched in the pager for '6fa98e'. That revealed the commit which
references that blob:

    git log --full-history -p -- sound/soc/codecs/wm8962-tables.c

```

## bruce, 2012-11-11 00:32

Subject: Re: orphan blob or what?
Message-ID: <871ug1kmil.fsf@intel.com>
URL: https://gitlist.dev/e/871ug1kmil.fsf%40intel.com
In-Reply-To: <1352497275-ner-6808@calvin>

```
Tomas Carnecky <tomas.carnecky@gmail.com> writes:

> On Fri, 09 Nov 2012 11:37:04 -0800, bruce <bruce.e.robertson@intel.com> wrote:
>> Tomas Carnecky <tomas.carnecky@gmail.com> writes:
>> 
>> Just idiocy on my part. Thanks.
>> 
>> > On Thu, 08 Nov 2012 16:24:36 -0800, bruce <bruce.e.robertson@intel.com> wrote:
>> >> In today's and older clones of https://github.com/mirrors/linux.git I
>> >> find this object, 6fa98ea0ae40f9a38256f11e5dc270363f785aee, that I can't
>> >> figure out how to eliminate^h^h^h^h^h^h^h^h^hget rid of. I don't see it
>> >> in 'git fsck', 'git gc --aggressive --prune' doesn't seem to prune it,
>> >> can't see it via 'git log'. And yet
>> >> 
>> >> linux/.git/objects/pack$ git verify-pack -v *.idx | grep 6fa98ea0ae40f9a38256f11e5dc270363f785aee
>> >> 6fa98ea0ae40f9a38256f11e5dc270363f785aee blob   1519697 124840 515299673
>> >> 8231eaa31ce1107c1463deb6ec33f61618aedbb9 blob   67 63 515424513 1 6fa98ea0ae40f9a38256f11e5dc270363f785aee
>> >> f21a8c1b9d47736fa4e27def66f04b9fe2b4bc53 blob   90 83 515424576 1 6fa98ea0ae40f9a38256f11e5dc270363f785aee
>> >
>> > Commit dee0bb9 (ASoC: Mark WM8962 Additional Control 4 register as volatile,
>> > 2010-09-29) references this blob.
>
> It wasn't easy to find the commit. First I figured out at which path that file
> was stored. Using git log -S'wm8962_reg[WM8962_MAX_REGISTER + 1]' I quickly
> determined that the file was somewhere in sound/, more specifically
> sound/soc/codecs/wm8962-tables.c. However a 'git log --
> sound/soc/codecs/wm8962-tables.c' did not show any commit. That was strange,
> because 'git log -S'WM8962_MAX_REGISTER + 1' --name-status --
> sound/soc/codecs/' clearly shows that the file existed at some point in the
> past. The commit is hidden from a simple 'git log' due to 'History
> Simplification'. See the git-log man page. I added --full-history -p to the log
> command, and searched in the pager for '6fa98e'. That revealed the commit which
> references that blob:
>
>     git log --full-history -p -- sound/soc/codecs/wm8962-tables.c

Thanks very much for the elucidation. I really must RTFMs. Only 44.786
Kib lines. Porcelain (mostly) first. I just can't eliminate the reading
I need to do.

FWIW, I was somewhat perplexed by searching for
c969f19f8fd17e600a16fe91aab66d86936cce0a in 'gitk -all'. It doesn't find
it BUT if I use --select-commit=c969f19f8fd17e600a16fe91aab66d86936cce0a
then positions to it. If I position away again it again can't find
it. Bother!

BTW, this was all occasioned by looking for unused large packed blobs as
an educational exercise.

Thanks again,
Bruce

```
