ASAP.
Thanks,
Martin
Martin Steigerwald - 14.04.17, 21:35:
> Hello,
>
> backup harddisk connected via eSATA. Hard kernel hang, mouse pointer
> freezing two times seemingly after finishing /home backup and creating new
> snapshot on source BTRFS SSD RAID 1 for / in order to b
Hello Chris.
Chris Murphy - 22.04.17, 09:31:
> Is the file system created with no-holes?
I have how to find out about it and while doing accidentally set that feature
on another filesystem (btrfstune only seems to be able to enable the feature,
not show the current state of it).
But as there
Martin Steigerwald - 22.04.17, 20:01:
> Chris Murphy - 22.04.17, 09:31:
> > Is the file system created with no-holes?
>
> I have how to find out about it and while doing accidentally set that
I didn´t find out how to find out about it and…
> feature on another filesystem (bt
on it. Anyway deleting that
subvolume works and I as I suspected an issue with the backup disk I started
with that one.
I got
merkaba:~> btrfs --version
btrfs-progs v4.9.1
merkaba:~> cat /proc/version
Linux version 4.9.20-tp520-btrfstrim+ (martin@merkaba) (gcc version 6.3.0
20170321 (Debian
th
> snapshots, is unlikely to hit me.
Hmmm, the BTRFS filesystems on my laptop 3 to 5 or even more years old. I stick
with 4.10 for now, I think.
The older ones are RAID 1 across two SSDs, the newer one is single device, on
one SSD.
These filesystems didn´t fail me in years and since 4.5 or 4.6
filesystems like Ext4 and XFS can do it… so this should be
possible with BTRFS as well.
Thanks,
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past experience something like xfs_repair surpasses btrfs
check in the ability to actually fix broken filesystem by a great extent.
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Mo
turn 0; /* I/O complete */
> + BUG_ON(!mpio);
You dereferenced mpio already above.
Regards,
Martin
>
> - if (noretry_error(error))
> - return error;
> + if (!error || noretry_error(error))
> + goto done;
>
> - if (mpio->pg
le operations?
>
as far as I can see it only uses the log tree in some cases where the
log tree was already used for the file or the parent directory. The
cases are documented here
https://github.com/torvalds/linux/blob/master/fs/btrfs/tree-log.c#L45 .
So rename isn't much heavier than unlink+cre
tuff like e.g. page files or the shadow storage area from the image
backups, as well and has a mode to store image backups as raw btrfs files.
Linux VMs I'd backup as files either from the hypervisor or from in VM.
If you want to backup big btrfs image files it can do that too, and
faster th
ty
>> data pages to disk, and then commit transaction.
>> While only calling btrfs_commit_transacation() doesn't trigger dirty
>> page writeback.
>>
>> So there is a difference.
this conversation made me realize why btrfs has sub-optimal meta-data
performance. Cow b-tree
of presentation PDFs on their site as well)
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in userspace, I am all for it.
[1] http://www.netbsd.org/releases/formal-7/NetBSD-7.0.html
(tons of presentation PDFs on their site as well)
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More majo
ENOSPC issues with 4.9.x than with the latest 4.14.
Regards,
Martin
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On 03.12.2017 16:39 Martin Raiber wrote:
> Am 26.11.2017 um 17:02 schrieb Tomasz Chmielewski:
>> On 2017-11-27 00:37, Martin Raiber wrote:
>>> On 26.11.2017 08:46 Tomasz Chmielewski wrote:
>>>> Got this one on a 4.14-rc7 filesystem with some 400 GB left:
>>>
fault and as usual not all the conditions may be
relevant. Could also be instead an upper layer error (Hyper-V storage),
memory issue or an application error.
Regards,
Martin Raiber
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is safe to use? Are you aware of any other issues?
I consider switching from LZO to ZSTD on this ThinkPad T520 with Sandybridge.
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More m
David Sterba - 14.11.17, 19:49:
> On Tue, Nov 14, 2017 at 08:34:37AM +0100, Martin Steigerwald wrote:
> > Hello David.
> >
> > David Sterba - 13.11.17, 23:50:
> > > while 4.14 is still fresh, let me address some concerns I've seen on
> > > linux
> > &
1072
> ZSTD_DStreamWorkspaceBound with ZSTD_BTRFS_MAX_INPUT: 549424
>
> This is not something I could fix easily, we'd probalby need a tuned
> version of ZSTD for grub constraints. Adding Nick to CC.
Somehow I am happy that I still have a plain Ext4 for /boot. :)
Thanks for looking
On 02.11.2017 16:10 Hans van Kranenburg wrote:
> On 11/02/2017 04:02 PM, Martin Raiber wrote:
>> snapshot cleanup is a little slow in my case (50TB volume). Would it
>> help to have multiple btrfs-cleaner threads? The block layer underneath
>> would have higher throughput w
Hi,
snapshot cleanup is a little slow in my case (50TB volume). Would it
help to have multiple btrfs-cleaner threads? The block layer underneath
would have higher throughput with more simultaneous read/write requests.
Regards,
Martin Raiber
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Am 26.11.2017 um 17:02 schrieb Tomasz Chmielewski:
> On 2017-11-27 00:37, Martin Raiber wrote:
>> On 26.11.2017 08:46 Tomasz Chmielewski wrote:
>>> Got this one on a 4.14-rc7 filesystem with some 400 GB left:
>> I guess it is too late now, but I guess the "btrfs fi
ors.
Best regards.
Martin
[1] https://btrfs.wiki.kernel.org/index.php/Manpage/btrfs(5)#MOUNT_OPTIONS
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Hello Chris,
Dne 7.5.2018 v 18:37 Chris Mason napsal(a):
>
>
> On 7 May 2018, at 12:16, Martin Svec wrote:
>
>> Hello Chris,
>>
>> Dne 7.5.2018 v 16:49 Chris Mason napsal(a):
>>> On 7 May 2018, at 7:40, Martin Svec wrote:
>>>
>>
Hardware is fine. Passes memtest86+ in SMP mode. Works fine on all
> other files.
>
>
>
> [ 381.869940] BUG: unable to handle kernel paging request at
> 00390e50 [ 381.870881] BTRFS: decompress failed
[…]
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Hello Chris,
Dne 7.5.2018 v 16:49 Chris Mason napsal(a):
> On 7 May 2018, at 7:40, Martin Svec wrote:
>
>> Hi,
>>
>> According to man btrfs [1], I assume that metadata_ratio=1 mount option
>> should
>> force allocation of one metadata chunk after every alloca
hotgunblast.png
> [4]
> https://syrinx.knorrie.org/~knorrie/btrfs/keep/2016-12-18-heatmap-scripting/
> fsid_ed10a358-c846-4e76-a071-3821d423a99d_startat_320029589504_at_1482095269
> .png [5] https://www.spinics.net/lists/linux-btrfs/msg64418.html
> [6]
> https://git.kernel.org/pub/scm/linux/ke
On 08.01.2018 19:34 Austin S. Hemmelgarn wrote:
> On 2018-01-08 13:17, Graham Cobb wrote:
>> On 08/01/18 16:34, Austin S. Hemmelgarn wrote:
>>> Ideally, I think it should be as generic as reasonably possible,
>>> possibly something along the lines of:
>>>
>>> A: While not strictly necessary,
.096979] BTRFS warning (device sdb): Skipping commit of aborted
transaction.
[285169.096981] BTRFS: error (device sdb) in cleanup_transaction:1873:
errno=-28 No space left
How can I help you to fix this issue?
Regards,
Martin Svec
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with btrfs_should_throttle_delayed_refs . Maybe by
creating a snapshot of a file and then modifying it (some action that
creates delayed refs, is not truncate which is already throttled and
does not commit a transaction which is also throttled).
Regards,
Martin Raiber
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Andrei Borzenkov - 02.08.18, 12:35:
> Отправлено с iPhone
>
> > 2 авг. 2018 г., в 12:16, Martin Steigerwald
> > написал(а):>
> > Hugo Mills - 01.08.18, 10:56:
> >>> On Wed, Aug 01, 2018 at 05:45:15AM +0200, MegaBrutal wrote:
> >>> I know it
dont-let-friends-use-btrfs-for-oltp
Interestingly it also compares with ZFS which is doing much better. So
maybe there is really something to be learned from ZFS.
I did not get clearly whether the benchmark was on an SSD, as Tomas
notes the "ssd" mount option, it might have been.
Thank
On 02.08.2018 14:27 Austin S. Hemmelgarn wrote:
> On 2018-08-02 06:56, Qu Wenruo wrote:
>>
>> On 2018年08月02日 18:45, Andrei Borzenkov wrote:
>>>
>>> Отправлено с iPhone
>>>
2 авг. 2018 г., в 10:02, Qu Wenruo
написал(а):
> On 2018年08月01日 11:45, MegaBrutal wrote:
> Hi all,
not compress, but Crucial
m500 mSATA SSD does. That has been the secondary SSD that still had all
the data after the outage of the Intel SSD 320.
Overall I am happy, cause BTRFS RAID 1 gave me access to the data after
the SSD outage. That is the most important thing about it for me.
Thanks,
--
Martin
. Has any thought been given to adding support
> > for lazytime to Btrfs?
[…]
> Is there any new regarding this?
I´d like to know whether there is any news about this as well.
If I understand it correctly this could even help BTRFS performance a
lot cause it is COW´ing metadata.
Thanks,
--
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Thanks for your detailed answer.
Austin S. Hemmelgarn - 17.08.18, 13:58:
> On 2018-08-17 05:08, Martin Steigerwald wrote:
[…]
> > I have seen a discussion about the limitation in point 2. That
> > allowing to add a device and make it into RAID 1 again might be
> > dange
7fe655700
R09: 0101
[Fri Aug 17 16:21:06 2018] R10: 56521bf7c0cc R11: 0246
R12: 7f67fd6d6440
[Fri Aug 17 16:21:06 2018] R13: 7f67fd6d5900 R14: 0064
R15: 0000
Regards,
Martin Raiber
Austin S. Hemmelgarn - 17.08.18, 14:55:
> On 2018-08-17 08:28, Martin Steigerwald wrote:
> > Thanks for your detailed answer.
> >
> > Austin S. Hemmelgarn - 17.08.18, 13:58:
> >> On 2018-08-17 05:08, Martin Steigerwald wrote:
[…]
> >>> Anyway, creating
Hi Roman.
Now with proper CC.
Roman Mamedov - 17.08.18, 14:50:
> On Fri, 17 Aug 2018 14:28:25 +0200
>
> Martin Steigerwald wrote:
> > > First off, keep in mind that the SSD firmware doing compression
> > > only
> > > really helps with wear-leveling. Doing
Austin S. Hemmelgarn - 17.08.18, 15:01:
> On 2018-08-17 08:50, Roman Mamedov wrote:
> > On Fri, 17 Aug 2018 14:28:25 +0200
> >
> > Martin Steigerwald wrote:
> >>> First off, keep in mind that the SSD firmware doing compression
> >>> only
Roman Mamedov - 18.08.18, 09:12:
> On Fri, 17 Aug 2018 23:17:33 +0200
>
> Martin Steigerwald wrote:
> > > Do not consider SSD "compression" as a factor in any of your
> > > calculations or planning. Modern controllers do not do it anymore,
> > > th
Nikolay Borisov - 17.07.18, 10:16:
> On 17.07.2018 11:02, Martin Steigerwald wrote:
> > Nikolay Borisov - 17.07.18, 09:20:
> >> On 16.07.2018 23:58, Wolf wrote:
> >>> Greetings,
> >>> I would like to ask what what is healthy amount of free space to
>
nance from user space,
the filesystem needs to be fixed. Ideally I would not have to worry on
whether to regularly balance an BTRFS or not. In other words: I should
not have to visit a performance analysis and tuning course in order to
use a computer with BTRFS filesystem.
Thanks,
--
Am 08.09.2018 um 18:24 schrieb Adam Borowski:
> On Thu, Sep 06, 2018 at 06:08:33AM -0400, Austin S. Hemmelgarn wrote:
>> On 2018-09-06 03:23, Nathan Dehnel wrote:
>>> So I guess my question is, does btrfs support atomic writes across
>>> multiple files? Or is anyone interested in such a feature?
On 10.07.2018 09:04 Pete wrote:
> I've just had the error in the subject which caused the file system to
> go read-only.
>
> Further part of error message:
> WARNING: CPU: 14 PID: 1351 at fs/btrfs/extent-tree.c:3076
> btrfs_run_delayed_refs*0x163/0x190
>
> 'Screenshot' here:
>
gt; > Maybe it's a good idea to added it to "submitting-patches.rst"?
>
> I guess it's not officially documented but if you do git log --grep
> "Link:" you'd see quite a lot of patches actually have a Link pointing
> to the original thread if it has sparked some pertinen
Dne 9.3.2018 v 17:36 Nikolay Borisov napsal(a):
>
> On 23.02.2018 16:28, Martin Svec wrote:
>> Hello,
>>
>> we have a btrfs-based backup system using btrfs snapshots and rsync.
>> Sometimes,
>> we hit ENOSPC bug and the filesystem is remounted read-only. H
Dne 10.3.2018 v 15:51 Martin Svec napsal(a):
> Dne 10.3.2018 v 13:13 Nikolay Borisov napsal(a):
>>
>>
>>>>> And then report back on the output of the extra debug
>>>>> statements.
>>>>>
>>>>> Your global rsv is essen
Dne 9.3.2018 v 20:03 Martin Svec napsal(a):
> Dne 9.3.2018 v 17:36 Nikolay Borisov napsal(a):
>> On 23.02.2018 16:28, Martin Svec wrote:
>>> Hello,
>>>
>>> we have a btrfs-based backup system using btrfs snapshots and rsync.
>>> Sometimes,
>>
Dne 10.3.2018 v 13:13 Nikolay Borisov napsal(a):
>
>
>
And then report back on the output of the extra debug
statements.
Your global rsv is essentially unused, this means
in the worst case the code should fallback to using the global rsv
for satisfying the memory
, or is it an
indication of a damaged
filesystem? Also note that rebuilding free space cache doesn't help.
Thank you.
Martin
Dne 23.2.2018 v 15:28 Martin Svec napsal(a):
> Hello,
>
> we have a btrfs-based backup system using btrfs snapshots and rsync.
> Sometimes,
> we hit ENOSPC bug and the filesyst
too.
Martin
Dne 21.4.2018 v 9:38 David Goodwin napsal(a):
> Hi,
>
> I'm running a 3TiB EBS based (2+1TiB devices) volume in EC2 which contains
> about 500 read-only
> snapshots.
>
> btrfs-progs v4.7.3
>
> There are two dmesg trace things below. The fir
30b2fea7fb77 ]---
[6.251219] BTRFS info (device dm-3): checking UUID tree
Thanks,
--
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Filipe Manana - 05.10.18, 17:21:
> On Fri, Oct 5, 2018 at 3:23 PM Martin Steigerwald
wrote:
> > Hello!
> >
> > On ThinkPad T520 after battery was discharged and machine just
> > blacked out.
> >
> > Is that some sign of regular consistency check / replay
reports the raw size and sometimes the logical
size. Especially in the "Total" line I find this a bit inconsistent.
"RAID1" columns show logical size, "Unallocated" shows raw size.
Also "Used:" in the global section shows raw size and "Free
(estimated):" shows logical size.
Thanks
--
Martin
are that?
I am wondering whether to switch to freespace tree v2. Would it provide
benefit for a regular / and /home filesystems as dual SSD BTRFS RAID-1
on a laptop?
Thanks,
--
Martin
I was having the same issue with kernels 4.19.2 and 4.19.4. I don’t appear to
have the issue with 4.20.0-0.rc1 on Fedora Server 29.
The issue is very easy to reproduce on my setup, not sure how much of it is
actually relevant, but here it is:
- 3 drive RAID5 created
- Some data moved to it
-
olume.
Does that work recursively?
I wound find it quite unexpected if I did btrfs subvol list in or on the
root directory of a BTRFS filesystem would not display any subvolumes on
that filesystem no matter where they are.
Thanks,
--
Martin
anything that can be done in a
Dmitri filesystem to minimise the damage of a lost eraseblock.
The problem is that we have no way of knowing what's inside each erase
block. We don't even know how big the erase block is.
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and/or dt.
In the filesystem case it was trivial to map out the affected files in
debugfs and correlate those to a logical region on the disk.
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Dmitri == Dmitri Nikulin dniku...@gmail.com writes:
Dmitri Already SanDisk are offering a proprietary Extreme FFS
Dmitri (perhaps even based on Unix FFS) for Windows Vista only.
Extreme FFS is SanDisk's next generation FTL/firmware. It's not a
filesystem that plugs into the OS.
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as such.
The article you posted references some benchmarketing numbers involving
Vista. That does not imply it's a Windows-only product.
http://en.wikipedia.org/wiki/ExtremeFFS
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of weeks ago at the
Linux Storage Workshop.
In the meantime: Can you point me to the relevant eMMC stuff so I can
see how many tiers or classes we have to work with there?
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code to hdparm, or both...
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.
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reason for a drive vendor to
implement that page unless the drive actually supports queued trim. And
consequently it's perfectly normal for that page to be absent.
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that reported the right thing
but which did in fact return the old data afterwards.
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perspective).
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no window of error. But obviously the ideal case is where
the same IMD can be passed throughout the stack without conversion.
Not sure what you use for file service? I believe NFSv4 allows for
checksums to be passed along. I have not looked at them closely yet,
though.
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of the standard.
I haven't looked into this for a long time. Last time I talked to the
NFS folks they seemed to think it would be possible to bridge the two
methods.
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scsi:scsi_dispatch_cmd_start /sys/kernel/debug/tracing/set_event
# echo 1 /sys/kernel/debug/tracing/tracing_on
[do stuff]
# cat /sys/kernel/debug/tracing/trace
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. There are a few exceptions to this such as
direct I/O, legacy filesystems using bufferheads and raw block device
access.
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echo scsi:scsi_dispatch_cmd_start
Chris /sys/kernel/debug/tracing/set_event echo 1
Chris /sys/kernel/debug/tracing/tracing_on cat
Chris /sys/kernel/debug/tracing/trace_pipe
MMC doesn't go through SCSI like ATA does.
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--
Lieber Freund,
Wie geht es Ihnen heute? Ich hoffe, fein, ich bin Dr. Martin Dustin aus
Harlesden , North West London, hier in England. Ich arbeite für NatWest
Bank London (National Westminster Bank Plc. ) . Ich schreibe Ihnen aus
meinem Büro , die von einer großen immensen Nutzen für
--
Lieber Freund,
Wie geht es Ihnen heute? Ich hoffe, fein, ich bin Dr. Martin Dustin aus
Harlesden , North West London, hier in England. Ich arbeite für NatWest
Bank London (National Westminster Bank Plc. ) . Ich schreibe Ihnen aus
meinem Büro , die von einer großen immensen Nutzen für
--
Lieber Freund,
Wie geht es Ihnen heute? Ich hoffe, fein, ich bin Dr. Martin Dustin aus
Harlesden , North West London, hier in England. Ich arbeite für NatWest
Bank London (National Westminster Bank Plc. ) . Ich schreibe Ihnen aus
meinem Büro , die von einer großen immensen Nutzen für
headache.
I am entirely in favor of this patch.
It was a big chunk of changes to read through but I did not spot any
obvious problems or polarity reversals. It would be nice to get the
respective fs/md/target driver folks to check their portions, though.
Reviewed-by: Martin K. Petersen martin.peter
y the REQ_ prefix in bios since the flags were
consolidated a while back. When I attempted to fix the READ/WRITE mess I
used a BLK_ prefix as a result.
Anyway. Just bikeshedding...
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ces and everything looks sensible to me.
I wonder what the best approach is to move a patch set with this many
stakeholders forward? Set a "speak now or forever hold your peace"
review deadline?
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Christoph,
> We will only have sense data if the command exectured and got a SCSI
> result, so this is pointless.
"executed"
Reviewed-by: Martin K. Petersen <martin.peter...@oracle.com>
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