The majority of reads receive a verity check after the bio is complete
as the page is marked uptodate. However, there is a class of reads which
are handled with btrfs logic in readpage, rather than by submitting a
bio. Specifically, these are inline extents, preallocated extents, and
holes. Tweak
The majority of reads receive a verity check after the bio is complete
as the page is marked uptodate. However, there is a class of reads which
are handled with btrfs logic in readpage, rather than by submitting a
bio. Specifically, these are inline extents, preallocated extents, and
holes. Tweak
The majority of reads receive a verity check after the bio is complete
as the page is marked uptodate. However, there is a class of reads which
are handled with btrfs logic in readpage, rather than by submitting a
bio. Specifically, these are inline extents, preallocated extents, and
holes. Tweak
> explictly dealing with inlines extents. What's more, the nested
> 'if (nocow)' can never be true because for inline extents we always do
> CoW and there is no chance 'noco' can be true, just remove that check.
>
> Signed-off-by: Nikolay Borisov
Reviewed-by: David Sterba
nocow)' can never be true because for inline extents we always do
CoW and there is no chance 'noco' can be true, just remove that check.
Signed-off-by: Nikolay Borisov
---
fs/btrfs/inode.c | 12 +---
1 file changed, 5 insertions(+), 7 deletions(-)
diff --git a/fs/btr
Signed-off-by: Mark Harmstone
---
fs/btrfs/encryption.c | 305 ++
fs/btrfs/encryption.h | 3 +
fs/btrfs/inode.c | 72 +-
3 files changed, 379 insertions(+), 1 deletion(-)
diff --git a/fs/btrfs/encryption.c b/fs/btrfs/encryption.c
index 0803
Signed-off-by: Mark Harmstone
---
fs/btrfs/ctree.h | 5 +-
fs/btrfs/encryption.c | 156 +-
fs/btrfs/encryption.h | 9 +++
fs/btrfs/inode.c | 99 +++
fs/btrfs/ioctl.c | 2 +-
5 files changed, 254 insertions(+), 1
Signed-off-by: Mark Harmstone
---
fs/btrfs/inode.c | 16
1 file changed, 16 insertions(+)
diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c
index 61481833f5e4..f8bc7174f7e3 100644
--- a/fs/btrfs/inode.c
+++ b/fs/btrfs/inode.c
@@ -219,6 +219,22 @@ static int insert_inline_extent(s
On Wed, Sep 19, 2018 at 09:18:16PM -0600, Chris Murphy wrote:
> > ext4 has inline data, too, so there's every chance grub will corrupt
> > ext4 filesystems with tit's wonderful new feature. I'm not sure if
> > the ext4 metadata cksums cover the entire inode and inline data, but
> > if they do it's
Adding fsdevel@, linux-ext4, and btrfs@ (which has a separate subject
on this same issue)
On Wed, Sep 19, 2018 at 7:45 PM, Dave Chinner wrote:
>On Wed, Sep 19, 2018 at 10:23:38AM -0600, Chris Murphy wrote:
>> Fedora 29 has a new feature to test if boot+startup fails, so the
>> bootloader can do
On 20.06.2018 12:02, fdman...@kernel.org wrote:
> From: Filipe Manana
>
> So fix this by ensuring the physical offset is always set to 0 when we
> are processing an extent with a special block_start value.
>
> Fixes: 9d311e11fc1f ("Btrfs: fiemap: pass correct bytenr when fm_extent_count
>
From: Filipe Manana
Commit 9d311e11fc1f ("Btrfs: fiemap: pass correct bytenr when
fm_extent_count is zero") introduced a regression where we no longer
report 0 as the physical offset for inline extents (and other extents
with a special block_start value). This is because it alway
onger
>> report 0 as the physical offset for inline extents. This is because it
>> always sets the variable used to report the physical offset ("disko")
>> as em->block_start plus some offset, and em->block_start has the value
>> 18446744073709551614 ((u64) -2)
fdman...@kernel.org 於 2018-06-19 19:31 寫到:
From: Filipe Manana
Commit 9d311e11fc1f ("Btrfs: fiemap: pass correct bytenr when
fm_extent_count is zero") introduced a regression where we no longer
report 0 as the physical offset for inline extents. This is because it
always sets the var
On Tue, Jun 19, 2018 at 12:31:42PM +0100, fdman...@kernel.org wrote:
> From: Filipe Manana
> So fix this by ensuring the physical offset is always set to 0 when we
> are processing an inline extent.
>
> Fixes: 9d311e11fc1f ("Btrfs: fiemap: pass correct bytenr when fm_extent_count
> is zero")
> S
From: Filipe Manana
Commit 9d311e11fc1f ("Btrfs: fiemap: pass correct bytenr when
fm_extent_count is zero") introduced a regression where we no longer
report 0 as the physical offset for inline extents. This is because it
always sets the variable used to report the physical offset (&
>>> From: Zygo Blaxell
>>>>>>
>>>>>> This is a story about 4 distinct (and very old) btrfs bugs.
>>>>>>
>>>>>> Commit c8b978188c ("Btrfs: Add zlib compression support") added
>>>>>> three
a story about 4 distinct (and very old) btrfs bugs.
Commit c8b978188c ("Btrfs: Add zlib compression support") added
three data corruption bugs for inline extents (bugs #1-3).
Commit 93c82d5750 ("Btrfs: zero page past end of inline file items")
fixed bug #1: uncompressed inline
;
>>>> From: Zygo Blaxell
>>>>
>>>> This is a story about 4 distinct (and very old) btrfs bugs.
>>>>
>>>> Commit c8b978188c ("Btrfs: Add zlib compression support") added
>>>> three data corruption bugs for inli
On 10/Mar/2017 16:45, Zygo Blaxell wrote:
> This is a story about 4 distinct (and very old) btrfs bugs.
>
<...>
Tested-by: Ismael Luceno
I encountered the issue in the wild; it caused frequent segfaults
at ld.so after some hours of operation, as well as integrity check
failures. A quick inspect
ssion support") added
three data corruption bugs for inline extents (bugs #1-3).
Commit 93c82d5750 ("Btrfs: zero page past end of inline file items")
fixed bug #1: uncompressed inline extents followed by a hole and more
extents could get non-zero data in the hole as they were read.
This is a story about 4 distinct (and very old) btrfs bugs.
Commit c8b978188c ("Btrfs: Add zlib compression support") added
three data corruption bugs for inline extents (bugs #1-3).
Commit 93c82d5750 ("Btrfs: zero page past end of inline file items")
fixed bug #1: uncompr
the math reflect any possible
> >>>>pg_offset? I do agree it shouldn't be happening, but its easy to correct
> >>>>for and the WARN is likely to get lost.
> >>>
> >>>I'm not sure how to do that. It looks like I'd have to pass pg_offset
> >
corners allowing inline extents
followed by more data, there are a few wacky corners allowing inline extents
at the end of the file.
Lets not mix that change in with this one though. For now, just get the
memset right and we can pass pg_offset down in a later patch.
Are you saying "fix the mem
>
> > ret = btrfs_decompress(compress_type, tmp, page,
> > extent_offset, inline_size, max_size, pg_offset);
> >
> >and in the compression functions get pg_offset from the argument list
> >instead of hardcoding zero.
>
> Yeah, it's a good poi
get pg_offset from the argument list
instead of hardcoding zero.
Yeah, it's a good point. Both zlib and lzo are assuming a zero
pg_offset right now, but just like there are wacky corners allowing
inline extents followed by more data, there are a few wacky corners
allowing inline extents
On Thu, Mar 09, 2017 at 10:39:49AM -0500, Chris Mason wrote:
>
>
> On 03/08/2017 09:12 PM, Zygo Blaxell wrote:
> >This is a story about 4 distinct (and very old) btrfs bugs.
> >
>
> Really great write up.
>
> [ ... ]
>
> >
> >diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c
> >index 25ac2cf..4
On 03/08/2017 09:12 PM, Zygo Blaxell wrote:
This is a story about 4 distinct (and very old) btrfs bugs.
Really great write up.
[ ... ]
diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c
index 25ac2cf..4d41a31 100644
--- a/fs/btrfs/inode.c
+++ b/fs/btrfs/inode.c
@@ -6805,6 +6805,12 @@ stati
ompression support") added
> > three data corruption bugs for inline extents (bugs #1-3).
> >
> > Commit 93c82d5750 ("Btrfs: zero page past end of inline file items")
> > fixed bug #1: uncompressed inline extents followed by a hole and more
> > extents c
This is a story about 4 distinct (and very old) btrfs bugs.
Commit c8b978188c ("Btrfs: Add zlib compression support") added
three data corruption bugs for inline extents (bugs #1-3).
Commit 93c82d5750 ("Btrfs: zero page past end of inline file items")
fixed bug #1: uncompr
On Wed, Mar 8, 2017 at 3:18 AM, Zygo Blaxell
wrote:
> From: Zygo Blaxell
>
> This is a story about 4 distinct (and very old) btrfs bugs.
>
> Commit c8b978188c ("Btrfs: Add zlib compression support") added
> three data corruption bugs for inline extents (bugs #1-3).
&
From: Zygo Blaxell
This is a story about 4 distinct (and very old) btrfs bugs.
Commit c8b978188c ("Btrfs: Add zlib compression support") added
three data corruption bugs for inline extents (bugs #1-3).
Commit 93c82d5750 ("Btrfs: zero page past end of inline file items
Hi Zygo,
On Tue, Dec 13, 2016 at 01:40:13AM -0500, Zygo Blaxell wrote:
> On Sun, Dec 11, 2016 at 10:56:59PM +0100, Xin Zhou wrote:
> >Hi Zygo,
> >
> >Since the corruption happens after I/O and checksum,
> >could it be possible to add some bug catcher code in debug build, to help
>
t;> > the source file into a non-zero offset of the destination file. This is
>> >> > something not expected and that the btrfs code is not prepared to deal
>> >> > with - all inline extents must be at a file offset equals to 0.
>> >> >
>
> >> > something not expected and that the btrfs code is not prepared to deal
> >> > with - all inline extents must be at a file offset equals to 0.
> >> >
> >>
> >> Somehow I failed to reproduce the BUG_ON with this case.
> >>
> &g
e ioctl, which calls the same extent
>> > cloning function as well) we end up allowing copy an inline extent from
>> > the source file into a non-zero offset of the destination file. This is
>> > something not expected and that the btrfs code is not prepared to deal
>
up allowing copy an inline extent from
> > the source file into a non-zero offset of the destination file. This is
> > something not expected and that the btrfs code is not prepared to deal
> > with - all inline extents must be at a file offset equals to 0.
> >
>
>
o offset of the destination file. This is
> something not expected and that the btrfs code is not prepared to deal
> with - all inline extents must be at a file offset equals to 0.
>
Somehow I failed to reproduce the BUG_ON with this case.
> For example, the following excerpt of a test ca
_extent will return uninitialized kernel memory
> instead of zero bytes in the hole.
>
> Commit 93c82d5750 ("Btrfs: zero page past end of inline file items")
> fills the hole by memset to zero after *uncompressed* inline extents.
>
> This patch provides the missing memse
/ata/.pata_sis.o.cmd: 9 extents found
Note that corruption can only occur if the first extent (the inline extent
at offset 0) is compressed (encoded). Uncompressed inline extents (like
the one above) will not be corrupted due to the fix in commit 93c82d5750.
If commit 93c82d5750 is reverted, yo
ot; , "Filipe Manana"
Cc: linux-btrfs@vger.kernel.org
Subject: Re: [PATCH] btrfs: fix hole read corruption for compressed inline
extents
Ping?
I know at least two people have read this patch, but it hasn't appeared in
the usual integration branches yet, and I've seen no a
gt; + char *map = kmap(page);
> > + memset(map + max_size, 0, PAGE_SIZE - max_size);
> > + kunmap(page);
> > + }
> > kfree(tmp);
> > return ret;
> > }
>
> Wasn't this already posted as:
>
> btrfs: fix silent data corruption
p);
> > return ret;
> > }
>
> Wasn't this already posted as:
>
> btrfs: fix silent data corruption while reading compressed inline extents
> https://patchwork.kernel.org/patch/9371971/
>
> but you don't indicate that's a V2 or something, and in
{
> + char *map = kmap(page);
> + memset(map + max_size, 0, PAGE_SIZE - max_size);
> + kunmap(page);
> + }
> kfree(tmp);
> return ret;
> }
Wasn't this already posted as:
btrfs: fix silent data corruption while reading compressed in
age past end of inline file items")
fills the hole by memset to zero after *uncompressed* inline extents.
This patch provides the missing memset for holes after *compressed*
inline extents.
The offending holes appear in the wild and will appear during routine
data integrity audits (e.g. comparing b
ug is at least as old as 3.5.7 (the oldest kernel I can conveniently
> > test), and possibly much older.
> >
> > The code may not be correct if the extent is larger than a page, so add
> > a WARN_ON for that case.
> >
> > To reproduce the bug, run this on a 3072M
# Use your favorite block device here
> blk=/dev/vdc
>
> # Create test filesystem and mount point
> mkdir -p /try
> mkfs.btrfs -dsingle -mdup -O ^extref,^skinny-metadata,^no-holes -f
> "$blk" || exit 1
> mount -ocompress-fo
|| exit 1
mount -ocompress-force,flushoncommit,max_inline=8192,noatime "$blk"
/try || exit 1
# Create a few inline extents in larger files.
# Multiple processes seem to be necessary.
y=/usr; for x in $(seq 10 19); do rsync -axHSWI "$y/." "$x";
s-force=zlib,flushoncommit,space_cache,skip_balance,commit=300
>
> Am I missing anything?
I've got this queued up to send out. We hit this with holes instead of
extents, and without compression, but its a similar problem:
Btrfs: deal with duplciates during extent_map insertion in
I frequently see these in /etc/lvm/backup/*. Something that LVM does
when it writes these files triggers the problem. This problem occurs
in kernels 3.18..4.4.11 (i.e. all the kernels I've tested).
btrfs-debug-tree finds this:
item 26 key (2702988 INODE_ITEM 0) itemoff 12632 itemsize 16
cow_file_range_inline() limits the size of an inline extent to
PAGE_CACHE_SIZE. This breaks in subpagesize-blocksize scenarios. Fix this by
comparing against root->sectorsize.
Reviewed-by: Josef Bacik
Signed-off-by: Chandan Rajendra
---
fs/btrfs/inode.c | 2 +-
1 file changed, 1 insertion(+), 1
cow_file_range_inline() limits the size of an inline extent to
PAGE_CACHE_SIZE. This breaks in subpagesize-blocksize scenarios. Fix this by
comparing against root->sectorsize.
Reviewed-by: Josef Bacik
Signed-off-by: Chandan Rajendra
---
fs/btrfs/inode.c | 2 +-
1 file changed, 1 insertion(+), 1
cow_file_range_inline() limits the size of an inline extent to
PAGE_CACHE_SIZE. This breaks in subpagesize-blocksize scenarios. Fix this by
comparing against root->sectorsize.
Reviewed-by: Josef Bacik
Signed-off-by: Chandan Rajendra
---
fs/btrfs/inode.c | 2 +-
1 file changed, 1 insertion(+), 1
cow_file_range_inline() limits the size of an inline extent to
PAGE_CACHE_SIZE. This breaks in subpagesize-blocksize scenarios. Fix this by
comparing against root->sectorsize.
Reviewed-by: Josef Bacik
Signed-off-by: Chandan Rajendra
---
fs/btrfs/inode.c | 2 +-
1 file changed, 1 insertion(+), 1
From: Filipe Manana
Test several cases of cloning inline extents that used to lead to file
corruption or data loss.
These file corruption and data loss cases are fixed by the linux kernel
patch titled:
"Btrfs: fix file corruption and data loss after cloning inline extents"
Sig
..\n"
test_cloning_inline_extents "-O no-holes" "-o compress"
status=0
exit
Signed-off-by: Filipe Manana
---
fs/btrfs/ioctl.c | 192 ++-----
1 file changed, 149 insertions(+), 43 deletions(-)
diff --git a/fs/btrfs/ioctl
cow_file_range_inline() limits the size of an inline extent to
PAGE_CACHE_SIZE. This breaks in subpagesize-blocksize scenarios. Fix this by
comparing against root->sectorsize.
Signed-off-by: Chandan Rajendra
---
fs/btrfs/inode.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a
cow_file_range_inline() limits the size of an inline extent to
PAGE_CACHE_SIZE. This breaks in subpagesize-blocksize scenarios. Fix this by
comparing against root->sectorsize.
Signed-off-by: Chandan Rajendra
---
fs/btrfs/inode.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a
cow_file_range_inline() limits the size of an inline extent to
PAGE_CACHE_SIZE. This breaks in subpagesize-blocksize scenarios. Fix this by
comparing against root->sectorsize.
Signed-off-by: Chandan Rajendra
---
fs/btrfs/inode.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a
cow_file_range_inline() limits the size of an inline extent to
PAGE_CACHE_SIZE. This breaks in subpagesize-blocksize scenarios. Fix this by
comparing against root->sectorsize.
Signed-off-by: Chandan Rajendra
---
fs/btrfs/inode.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a
cow_file_range_inline() limits the size of an inline extent to
PAGE_CACHE_SIZE. This breaks in subpagesize-blocksize scenarios. Fix this by
comparing against root->sectorsize.
Signed-off-by: Chandan Rajendra
---
fs/btrfs/inode.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a
prepared to deal
with - all inline extents must be at a file offset equals to 0.
For example, the following excerpt of a test case for fstests triggers
a crash/BUG_ON() on a write operation after an inline extent is cloned
into a non-zero offset:
_scratch_mkfs >>$seqres.full 2>&1
_
cow_file_range_inline() limits the size of an inline extent to
PAGE_CACHE_SIZE. This breaks in subpagesize-blocksize scenarios. Fix this by
comparing against root->sectorsize.
Signed-off-by: Chandan Rajendra
---
fs/btrfs/inode.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a
Apparently when we do inline extents we allow the data to overlap the last chunk
of the btrfs_file_extent_item, which means that we can possibly have a
btrfs_file_extent_item that isn't actually as large as a btrfs_file_extent_item.
This messes with us when we try to overwrite the extent
The first four bytes is the length of all data chunks, and the first
four bytes of each chunk is the length of compressed chunk data,
even when there's only one chunk, which is the case for inline
extents.
Signed-off-by: Li Zefan
---
fs/btrfs/snappy.c |4
1 files changed, 4 inser
On Tue, 9 Aug 2011, Sage Weil wrote:
> Hi all,
>
> I'm hitting a problem cloning inline extents that I haven't had much
> success tracking down. It's simple enough to reproduce:
>
> echo > src
> echo 2 > dst
&g
Hi all,
I'm hitting a problem cloning inline extents that I haven't had much
success tracking down. It's simple enough to reproduce:
echo > src
echo 2 > dst
clone_range src 0 29 dst 0
cmp src dst # fails! dst is size 29 but
We were only releasing our metadata reservations when doing inline extents,
which isn't correct since we don't need our data reservation either. So call
btrfs_delalloc_release_space() instead of btrfs_delalloc_release_metadata().
This would have been caught earlier but we don&#
68 matches
Mail list logo
