From: "Darrick J. Wong" <djwong@kernel.org>
To: Zorro Lang <zlang@redhat.com>
Cc: linux-xfs@vger.kernel.org, fstests@vger.kernel.org
Subject: Re: [PATCH 1/5] populate: export the metadump description name
Date: Thu, 13 Oct 2022 12:12:19 -0700 [thread overview]
Message-ID: <Y0hjE3neN2rDhkxw@magnolia> (raw)
In-Reply-To: <20221013162826.hfs75s33giqmfu4t@zlang-mailbox>
On Fri, Oct 14, 2022 at 12:28:26AM +0800, Zorro Lang wrote:
> On Thu, Oct 13, 2022 at 08:54:35AM -0700, Darrick J. Wong wrote:
> > On Thu, Oct 13, 2022 at 10:55:15PM +0800, Zorro Lang wrote:
> > > On Tue, Oct 11, 2022 at 06:45:27PM -0700, Darrick J. Wong wrote:
> > > > From: Darrick J. Wong <djwong@kernel.org>
> > > >
> > > > Not sure why this hasn't been broken all along, but we should be
> > > > exporting this variable so that it shows up in subshells....
> > >
> > > May I ask where's the subshell which uses $POPULATE_METADUMP?
> >
> > _scratch_xfs_fuzz_metadata does this:
> >
> > echo "${fields}" | while read field; do
> > echo "${verbs}" | while read fuzzverb; do
> > __scratch_xfs_fuzz_mdrestore
> > _xfs_mdrestore "${POPULATE_METADUMP}"
> >
> > The (nested) echo piped to while starts subshells.
>
> I'm not so familar with this part, so I didn't a simple test[1], and looks like
> the PARAM can be seen, even it's not exported. Do I misunderstand something?
>
> Thanks,
> Zorro
>
> [1]
> $ echo "$list"
> a
> b
> cc
> $ PARAM="This's a test"
> $ echo "$list"|while read c1;do echo "$list"|while read c2;do echo $PARAM;done; done
> This's a test
> This's a test
> This's a test
> This's a test
> This's a test
> This's a test
> This's a test
> This's a test
> This's a test
Hmm. I can't figure out why I needed the export here. It was late one
night, something was broken, and exporting the variable made it work.
Now I can't recall exactly what that was and it seems fine without
it...?
I guess I'll put it back and rerun the entire fuzz suite to see what
pops out...
--D
> >
> > > >
> > > > Signed-off-by: Darrick J. Wong <djwong@kernel.org>
> > > > ---
> > > > common/populate | 6 +++---
> > > > 1 file changed, 3 insertions(+), 3 deletions(-)
> > > >
> > > >
> > > > diff --git a/common/populate b/common/populate
> > > > index cfdaf766f0..b501c2fe45 100644
> > > > --- a/common/populate
> > > > +++ b/common/populate
> > > > @@ -868,9 +868,9 @@ _scratch_populate_cached() {
> > > > local meta_tag="$(echo "${meta_descr}" | md5sum - | cut -d ' ' -f 1)"
> > > > local metadump_stem="${TEST_DIR}/__populate.${FSTYP}.${meta_tag}"
> > > >
> > > > - # These variables are shared outside this function
> > > > - POPULATE_METADUMP="${metadump_stem}.metadump"
> > > > - POPULATE_METADUMP_DESCR="${metadump_stem}.txt"
> > > > + # This variable is shared outside this function
> > > > + export POPULATE_METADUMP="${metadump_stem}.metadump"
> > > > + local POPULATE_METADUMP_DESCR="${metadump_stem}.txt"
> > >
> > > If the POPULATE_METADUMP_DESCR is not shared outside anymore, how about change
> > > it to lower-case?
> >
> > Ok.
> >
> > --D
> >
> > > >
> > > > # Don't keep metadata images cached for more 48 hours...
> > > > rm -rf "$(find "${POPULATE_METADUMP}" -mtime +2 2>/dev/null)"
> > > >
> > >
> >
>
next prev parent reply other threads:[~2022-10-13 19:13 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-10-12 1:45 [PATCHSET 0/5] fstests: support external logs when caching prepopulated images Darrick J. Wong
2022-10-12 1:45 ` [PATCH 1/5] populate: export the metadump description name Darrick J. Wong
2022-10-13 14:55 ` Zorro Lang
2022-10-13 15:54 ` Darrick J. Wong
2022-10-13 16:28 ` Zorro Lang
2022-10-13 19:12 ` Darrick J. Wong [this message]
2022-10-14 1:17 ` Zorro Lang
2022-10-14 18:21 ` [PATCH v1.1 " Darrick J. Wong
2022-10-15 5:01 ` Zorro Lang
2022-10-15 5:10 ` Zorro Lang
2022-10-15 7:28 ` Darrick J. Wong
2022-10-15 8:21 ` Zorro Lang
2022-10-15 7:23 ` Darrick J. Wong
2022-10-12 1:45 ` [PATCH 2/5] populate: wipe external xfs log devices when restoring a cached image Darrick J. Wong
2022-10-13 15:10 ` Zorro Lang
2022-10-12 1:45 ` [PATCH 3/5] populate: reformat external ext[34] journal " Darrick J. Wong
2022-10-13 15:47 ` Zorro Lang
2022-10-12 1:45 ` [PATCH 4/5] populate: require e2image before populating Darrick J. Wong
2022-10-13 15:48 ` Zorro Lang
2022-10-12 1:45 ` [PATCH 5/5] fstests: refactor xfs_mdrestore calls Darrick J. Wong
2022-10-13 16:06 ` Zorro Lang
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