threads / discuss / 32044

orphan blob or what?

Subject: orphan blob or what?

## tl;dr

6 messages between Nov 9, 2012 and Nov 11, 2012.

replies: 5people: 2as markdown or json

bruce· Nov 9, 2012, 00:24 UTC · lore

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· Nov 9, 2012, 01:08 UTC · re: bruce · lore

Re: orphan blob or what?

On Thu, 08 Nov 2012 16:24:36 -0800, bruce <bruce.e.robertson@intel.com> wrote:

Show 10 quoted lines

> 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.

bruce· Nov 9, 2012, 19:37 UTC · re: Tomas Carnecky · lore

Re: orphan blob or what?

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

Just idiocy on my part. Thanks.

Show 14 quoted lines

> 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· Nov 9, 2012, 21:41 UTC · re: bruce · lore

Re: orphan blob or what?

On Fri, 09 Nov 2012 11:37:04 -0800, bruce <bruce.e.robertson@intel.com> wrote:

Show 18 quoted lines

> 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· Nov 11, 2012, 00:32 UTC · re: Tomas Carnecky · lore

Re: orphan blob or what?

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

Show 33 quoted lines

> 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

Robertson, Bruce E· Nov 9, 2012, 06:23 UTC · re: bruce · lore

RE: orphan blob or what?

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

Thanks, bruce