| Message ID | 20171123111031.6550-4-eguan@redhat.com (mailing list archive) |
|---|---|
| State | Not Applicable |
| Headers | show |
On Thu, Nov 23, 2017 at 1:10 PM, Eryu Guan <eguan@redhat.com> wrote: > util-linux commit 6dede2f2f7c5 ("libmount: support MS_RDONLY on > write-protected devices") changed the error message on read-only > block device, and in the failure case printed one line message > instead of two (for details please see comments in common/filter), > and this change broke generic/050 and overlay/035. > > Fix it by adding more filter rules to _filter_ro_mount and updating > associated .out files to unify the output from both old and new > util-linux versions. > > Signed-off-by: Eryu Guan <eguan@redhat.com> > --- > v3: > - document the filtered format in comments > - remove legacy sed filter, the perl filter covers the legacy case well > - filter out $SCRATCH_DEV/MNT too and use a consistent output > - remove the new filter_mount helper in overlay/035 > > common/filter | 48 ++++++++++++++++++++++++++++++++++++++++++++++-- > tests/generic/050 | 8 ++++---- > tests/generic/050.out | 8 ++++---- > tests/overlay/035 | 4 ++-- > tests/overlay/035.out | 4 ++-- > 5 files changed, 58 insertions(+), 14 deletions(-) > > diff --git a/common/filter b/common/filter > index a212c09aa138..6140b331017f 100644 > --- a/common/filter > +++ b/common/filter > @@ -399,9 +399,53 @@ _filter_ending_dot() > > # Older mount output referred to "block device" when mounting RO devices > # It's gone in newer versions > +# > +# And util-linux v2.30 changed the output again, e.g. > +# for a successful ro mount: > +# prior to v2.30: mount: <device> is write-protected, mounting read-only > +# v2.30 and later: mount: <mountpoint>: WARNING: device write-protected, mounted read-only. > +# > +# a failed ro mount: > +# prior to v2.30: > +# mount: <device> is write-protected, mounting read-only > +# mount: cannot mount <device> read-only > +# v2.30 and later: > +# mount: <mountpoint>: cannot mount <device> read-only. > +# > +# a failed rw remount: > +# prior to v2.30: mount: cannot remount <device> read-write, is write-protected > +# v2.30 and later: mount: <mountpoint>: cannot remount <device> read-write, is write-protected. > +# > +# Now use _filter_ro_mount to unify all these differences across old & new > +# util-linux versions. So the filtered format would be: > +# > +# successful ro mount: > +# mount: device write-protected, mounting read-only > +# > +# failed ro mount: > +# mount: device write-protected, mounting read-only > +# mount: cannot mount read-only > +# > +# failed rw remount: > +# mount: cannot remount device read-write, is write-protected > _filter_ro_mount() { > - sed -e "s/mount: block device/mount:/g" \ > - -e "s/mount: cannot mount block device/mount: cannot mount/g" > + perl -ne ' > + if (/write-protected, mount.*read-only/) { > + # successful ro mount > + print "mount: device write-protected, mounting read-only\n"; > + } elsif (/mount: .*: cannot mount.*read-only/) { > + # filter v2.30 format failed ro mount > + print "mount: device write-protected, mounting read-only\n"; Leftover copy&paste line? > + print "mount: cannot mount read-only\n"; > + } elsif (/(^mount: cannot mount) .* (read-only$)/) { > + # filter prior to v2.30 format failed ro mount > + print "$1 $2\n"; Maybe I am missing something, but why are you printing arguments when you know what the expected output should be? Also, in what is that match expression different from the v2.30 format? Can't you merge both cases to use the more generic match expr (without .*:) and print the expected result? > + } elsif (/mount:.* cannot remount .* read-write.*/) { > + # failed rw remount > + print "mount: cannot remount device read-write, is write-protected\n"; > + } else { > + print "$_"; > + }' | _filter_ending_dot > } > -- To unsubscribe from this list: send the line "unsubscribe linux-xfs" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
On Thu, Nov 23, 2017 at 3:28 PM, Amir Goldstein <amir73il@gmail.com> wrote: > On Thu, Nov 23, 2017 at 1:10 PM, Eryu Guan <eguan@redhat.com> wrote: >> util-linux commit 6dede2f2f7c5 ("libmount: support MS_RDONLY on >> write-protected devices") changed the error message on read-only >> block device, and in the failure case printed one line message >> instead of two (for details please see comments in common/filter), >> and this change broke generic/050 and overlay/035. >> >> Fix it by adding more filter rules to _filter_ro_mount and updating >> associated .out files to unify the output from both old and new >> util-linux versions. >> >> Signed-off-by: Eryu Guan <eguan@redhat.com> >> --- >> v3: >> - document the filtered format in comments >> - remove legacy sed filter, the perl filter covers the legacy case well >> - filter out $SCRATCH_DEV/MNT too and use a consistent output >> - remove the new filter_mount helper in overlay/035 >> >> common/filter | 48 ++++++++++++++++++++++++++++++++++++++++++++++-- >> tests/generic/050 | 8 ++++---- >> tests/generic/050.out | 8 ++++---- >> tests/overlay/035 | 4 ++-- >> tests/overlay/035.out | 4 ++-- >> 5 files changed, 58 insertions(+), 14 deletions(-) >> >> diff --git a/common/filter b/common/filter >> index a212c09aa138..6140b331017f 100644 >> --- a/common/filter >> +++ b/common/filter >> @@ -399,9 +399,53 @@ _filter_ending_dot() >> >> # Older mount output referred to "block device" when mounting RO devices >> # It's gone in newer versions >> +# >> +# And util-linux v2.30 changed the output again, e.g. >> +# for a successful ro mount: >> +# prior to v2.30: mount: <device> is write-protected, mounting read-only >> +# v2.30 and later: mount: <mountpoint>: WARNING: device write-protected, mounted read-only. >> +# >> +# a failed ro mount: >> +# prior to v2.30: >> +# mount: <device> is write-protected, mounting read-only >> +# mount: cannot mount <device> read-only >> +# v2.30 and later: >> +# mount: <mountpoint>: cannot mount <device> read-only. >> +# >> +# a failed rw remount: >> +# prior to v2.30: mount: cannot remount <device> read-write, is write-protected >> +# v2.30 and later: mount: <mountpoint>: cannot remount <device> read-write, is write-protected. >> +# >> +# Now use _filter_ro_mount to unify all these differences across old & new >> +# util-linux versions. So the filtered format would be: >> +# >> +# successful ro mount: >> +# mount: device write-protected, mounting read-only >> +# >> +# failed ro mount: >> +# mount: device write-protected, mounting read-only >> +# mount: cannot mount read-only >> +# >> +# failed rw remount: >> +# mount: cannot remount device read-write, is write-protected >> _filter_ro_mount() { >> - sed -e "s/mount: block device/mount:/g" \ >> - -e "s/mount: cannot mount block device/mount: cannot mount/g" >> + perl -ne ' >> + if (/write-protected, mount.*read-only/) { >> + # successful ro mount >> + print "mount: device write-protected, mounting read-only\n"; >> + } elsif (/mount: .*: cannot mount.*read-only/) { >> + # filter v2.30 format failed ro mount >> + print "mount: device write-protected, mounting read-only\n"; > > Leftover copy&paste line? > >> + print "mount: cannot mount read-only\n"; >> + } elsif (/(^mount: cannot mount) .* (read-only$)/) { >> + # filter prior to v2.30 format failed ro mount >> + print "$1 $2\n"; > > Maybe I am missing something, but why are you printing arguments > when you know what the expected output should be? > Also, in what is that match expression different from the v2.30 format? > Can't you merge both cases to use the more generic match expr > (without .*:) and print the expected result? > Also, I suggest to change the expected format to: "mount: cannot mount device read-only" (i.e. referring to "device") to be consistent with the rest of the _filter_ro_mount and _filter_busy_mount errors. Thanks, Amir. -- To unsubscribe from this list: send the line "unsubscribe linux-xfs" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
On Thu, Nov 23, 2017 at 03:28:58PM +0200, Amir Goldstein wrote: > On Thu, Nov 23, 2017 at 1:10 PM, Eryu Guan <eguan@redhat.com> wrote: > > util-linux commit 6dede2f2f7c5 ("libmount: support MS_RDONLY on > > write-protected devices") changed the error message on read-only > > block device, and in the failure case printed one line message > > instead of two (for details please see comments in common/filter), > > and this change broke generic/050 and overlay/035. > > > > Fix it by adding more filter rules to _filter_ro_mount and updating > > associated .out files to unify the output from both old and new > > util-linux versions. > > > > Signed-off-by: Eryu Guan <eguan@redhat.com> > > --- > > v3: > > - document the filtered format in comments > > - remove legacy sed filter, the perl filter covers the legacy case well > > - filter out $SCRATCH_DEV/MNT too and use a consistent output > > - remove the new filter_mount helper in overlay/035 > > > > common/filter | 48 ++++++++++++++++++++++++++++++++++++++++++++++-- > > tests/generic/050 | 8 ++++---- > > tests/generic/050.out | 8 ++++---- > > tests/overlay/035 | 4 ++-- > > tests/overlay/035.out | 4 ++-- > > 5 files changed, 58 insertions(+), 14 deletions(-) > > > > diff --git a/common/filter b/common/filter > > index a212c09aa138..6140b331017f 100644 > > --- a/common/filter > > +++ b/common/filter > > @@ -399,9 +399,53 @@ _filter_ending_dot() > > > > # Older mount output referred to "block device" when mounting RO devices > > # It's gone in newer versions > > +# > > +# And util-linux v2.30 changed the output again, e.g. > > +# for a successful ro mount: > > +# prior to v2.30: mount: <device> is write-protected, mounting read-only > > +# v2.30 and later: mount: <mountpoint>: WARNING: device write-protected, mounted read-only. > > +# > > +# a failed ro mount: > > +# prior to v2.30: > > +# mount: <device> is write-protected, mounting read-only > > +# mount: cannot mount <device> read-only > > +# v2.30 and later: > > +# mount: <mountpoint>: cannot mount <device> read-only. > > +# > > +# a failed rw remount: > > +# prior to v2.30: mount: cannot remount <device> read-write, is write-protected > > +# v2.30 and later: mount: <mountpoint>: cannot remount <device> read-write, is write-protected. > > +# > > +# Now use _filter_ro_mount to unify all these differences across old & new > > +# util-linux versions. So the filtered format would be: > > +# > > +# successful ro mount: > > +# mount: device write-protected, mounting read-only > > +# > > +# failed ro mount: > > +# mount: device write-protected, mounting read-only > > +# mount: cannot mount read-only > > +# > > +# failed rw remount: > > +# mount: cannot remount device read-write, is write-protected > > _filter_ro_mount() { > > - sed -e "s/mount: block device/mount:/g" \ > > - -e "s/mount: cannot mount block device/mount: cannot mount/g" > > + perl -ne ' > > + if (/write-protected, mount.*read-only/) { > > + # successful ro mount > > + print "mount: device write-protected, mounting read-only\n"; > > + } elsif (/mount: .*: cannot mount.*read-only/) { > > + # filter v2.30 format failed ro mount > > + print "mount: device write-protected, mounting read-only\n"; > > Leftover copy&paste line? No, that's intentional. Prior to v2.30, mount printed two-line error messages, as described in the comments above: # a failed ro mount: # prior to v2.30: # mount: <device> is write-protected, mounting read-only # mount: cannot mount <device> read-only # v2.30 and later: # mount: <mountpoint>: cannot mount <device> read-only. So this is matching the one-line v2.30 format and converting it to two-line messages. > > > + print "mount: cannot mount read-only\n"; > > + } elsif (/(^mount: cannot mount) .* (read-only$)/) { > > + # filter prior to v2.30 format failed ro mount > > + print "$1 $2\n"; > > Maybe I am missing something, but why are you printing arguments > when you know what the expected output should be? No special reason, perhaps that was easier to type :) I'll print the expected output directly, and change the output to mount: cannot mount device read-only as you suggested. > Also, in what is that match expression different from the v2.30 format? v2.30 failed ro mount output is a single-line message, with the "<mountpoint> :" string in between "mount: " and "cannot mount", so I'm explicitly matching the colon with ".*:". prior to v2.30, failed ro mount output is two-line message, with the first line identical to the "successful ro mount" case (maybe I should have mentioned it too along with the "successful ro mount" comment), so I'm matching the second line here. > Can't you merge both cases to use the more generic match expr > (without .*:) and print the expected result? Seems no, I need to distinguish the two cases and decide if I should print out single-line or two-line messages. It's a bit complicated, maybe I missed some obvious straightforward fix, that's why I said the following in v1/v2 cover letter :) "Perhaps there're better and cleaner ways to fix the problems, please help review and advise" Thanks, Eryu > > > + } elsif (/mount:.* cannot remount .* read-write.*/) { > > + # failed rw remount > > + print "mount: cannot remount device read-write, is write-protected\n"; > > + } else { > > + print "$_"; > > + }' | _filter_ending_dot > > } > > -- To unsubscribe from this list: send the line "unsubscribe linux-xfs" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
diff --git a/common/filter b/common/filter index a212c09aa138..6140b331017f 100644 --- a/common/filter +++ b/common/filter @@ -399,9 +399,53 @@ _filter_ending_dot() # Older mount output referred to "block device" when mounting RO devices # It's gone in newer versions +# +# And util-linux v2.30 changed the output again, e.g. +# for a successful ro mount: +# prior to v2.30: mount: <device> is write-protected, mounting read-only +# v2.30 and later: mount: <mountpoint>: WARNING: device write-protected, mounted read-only. +# +# a failed ro mount: +# prior to v2.30: +# mount: <device> is write-protected, mounting read-only +# mount: cannot mount <device> read-only +# v2.30 and later: +# mount: <mountpoint>: cannot mount <device> read-only. +# +# a failed rw remount: +# prior to v2.30: mount: cannot remount <device> read-write, is write-protected +# v2.30 and later: mount: <mountpoint>: cannot remount <device> read-write, is write-protected. +# +# Now use _filter_ro_mount to unify all these differences across old & new +# util-linux versions. So the filtered format would be: +# +# successful ro mount: +# mount: device write-protected, mounting read-only +# +# failed ro mount: +# mount: device write-protected, mounting read-only +# mount: cannot mount read-only +# +# failed rw remount: +# mount: cannot remount device read-write, is write-protected _filter_ro_mount() { - sed -e "s/mount: block device/mount:/g" \ - -e "s/mount: cannot mount block device/mount: cannot mount/g" + perl -ne ' + if (/write-protected, mount.*read-only/) { + # successful ro mount + print "mount: device write-protected, mounting read-only\n"; + } elsif (/mount: .*: cannot mount.*read-only/) { + # filter v2.30 format failed ro mount + print "mount: device write-protected, mounting read-only\n"; + print "mount: cannot mount read-only\n"; + } elsif (/(^mount: cannot mount) .* (read-only$)/) { + # filter prior to v2.30 format failed ro mount + print "$1 $2\n"; + } elsif (/mount:.* cannot remount .* read-write.*/) { + # failed rw remount + print "mount: cannot remount device read-write, is write-protected\n"; + } else { + print "$_"; + }' | _filter_ending_dot } # Filter a failed mount output due to EUCLEAN and USTALE, util-linux changed diff --git a/tests/generic/050 b/tests/generic/050 index 5fa28a7648e5..efa45f04825b 100755 --- a/tests/generic/050 +++ b/tests/generic/050 @@ -60,7 +60,7 @@ blockdev --setro $SCRATCH_DEV # Mount it, and make sure we can't write to it, and we can unmount it again # echo "mounting read-only block device:" -_scratch_mount 2>&1 | _filter_scratch | _filter_ro_mount +_scratch_mount 2>&1 | _filter_ro_mount echo "touching file on read-only filesystem (should fail)" touch $SCRATCH_MNT/foo 2>&1 | _filter_scratch @@ -95,10 +95,10 @@ blockdev --setro $SCRATCH_DEV # -o norecovery is used. # echo "mounting filesystem that needs recovery on a read-only device:" -_scratch_mount 2>&1 | _filter_scratch | _filter_ro_mount +_scratch_mount 2>&1 | _filter_ro_mount echo "unmounting read-only filesystem" -_scratch_unmount 2>&1 | _filter_scratch +_scratch_unmount 2>&1 | _filter_scratch | _filter_ending_dot # # This is the way out if the underlying device really is read-only. @@ -106,7 +106,7 @@ _scratch_unmount 2>&1 | _filter_scratch # data recovery hack. # echo "mounting filesystem with -o norecovery on a read-only device:" -_scratch_mount -o norecovery 2>&1 | _filter_scratch | _filter_ro_mount +_scratch_mount -o norecovery 2>&1 | _filter_ro_mount echo "unmounting read-only filesystem" _scratch_unmount 2>&1 | _filter_scratch diff --git a/tests/generic/050.out b/tests/generic/050.out index fb90f6ea5819..2187d16fa328 100644 --- a/tests/generic/050.out +++ b/tests/generic/050.out @@ -1,7 +1,7 @@ QA output created by 050 setting device read-only mounting read-only block device: -mount: SCRATCH_DEV is write-protected, mounting read-only +mount: device write-protected, mounting read-only touching file on read-only filesystem (should fail) touch: cannot touch 'SCRATCH_MNT/foo': Read-only file system unmounting read-only filesystem @@ -12,12 +12,12 @@ going down: unmounting shutdown filesystem: setting device read-only mounting filesystem that needs recovery on a read-only device: -mount: SCRATCH_DEV is write-protected, mounting read-only -mount: cannot mount SCRATCH_DEV read-only +mount: device write-protected, mounting read-only +mount: cannot mount read-only unmounting read-only filesystem umount: SCRATCH_DEV: not mounted mounting filesystem with -o norecovery on a read-only device: -mount: SCRATCH_DEV is write-protected, mounting read-only +mount: device write-protected, mounting read-only unmounting read-only filesystem setting device read-write mounting filesystem that needs recovery with -o ro: diff --git a/tests/overlay/035 b/tests/overlay/035 index 64fcd708105e..05447741a1ba 100755 --- a/tests/overlay/035 +++ b/tests/overlay/035 @@ -69,7 +69,7 @@ mkdir -p $lowerdir1 $lowerdir2 $upperdir $workdir $MOUNT_PROG -t overlay -o"lowerdir=$lowerdir2:$lowerdir1" \ $OVL_BASE_SCRATCH_MNT $SCRATCH_MNT touch $SCRATCH_MNT/foo 2>&1 | _filter_scratch -_scratch_remount rw 2>&1 | _filter_scratch +_scratch_remount rw 2>&1 | _filter_ro_mount $UMOUNT_PROG $SCRATCH_MNT # Make workdir immutable to prevent workdir re-create on mount @@ -79,7 +79,7 @@ $CHATTR_PROG +i $workdir # Verify that overlay is mounted read-only and that it cannot be remounted rw. _overlay_scratch_mount_dirs $lowerdir2 $upperdir $workdir touch $SCRATCH_MNT/bar 2>&1 | _filter_scratch -_scratch_remount rw 2>&1 | _filter_scratch +_scratch_remount rw 2>&1 | _filter_ro_mount # success, all done status=0 diff --git a/tests/overlay/035.out b/tests/overlay/035.out index 5a5f67771402..e08ba2ebc691 100644 --- a/tests/overlay/035.out +++ b/tests/overlay/035.out @@ -1,5 +1,5 @@ QA output created by 035 touch: cannot touch 'SCRATCH_MNT/foo': Read-only file system -mount: cannot remount SCRATCH_DEV read-write, is write-protected +mount: cannot remount device read-write, is write-protected touch: cannot touch 'SCRATCH_MNT/bar': Read-only file system -mount: cannot remount SCRATCH_DEV read-write, is write-protected +mount: cannot remount device read-write, is write-protected
util-linux commit 6dede2f2f7c5 ("libmount: support MS_RDONLY on write-protected devices") changed the error message on read-only block device, and in the failure case printed one line message instead of two (for details please see comments in common/filter), and this change broke generic/050 and overlay/035. Fix it by adding more filter rules to _filter_ro_mount and updating associated .out files to unify the output from both old and new util-linux versions. Signed-off-by: Eryu Guan <eguan@redhat.com> --- v3: - document the filtered format in comments - remove legacy sed filter, the perl filter covers the legacy case well - filter out $SCRATCH_DEV/MNT too and use a consistent output - remove the new filter_mount helper in overlay/035 common/filter | 48 ++++++++++++++++++++++++++++++++++++++++++++++-- tests/generic/050 | 8 ++++---- tests/generic/050.out | 8 ++++---- tests/overlay/035 | 4 ++-- tests/overlay/035.out | 4 ++-- 5 files changed, 58 insertions(+), 14 deletions(-)