I am deleting a drive using btrfs device delete . The
system is very unresponsive, it can be unresponsive for periods of
around 10 seconds, windows not refreshing, not responding to the
keyboard for example. Suspect it is why printing is not working at
present. Is there anyway of pausing or can
> I think it is best that you just repeat the fixing again on the real
> disks and just make sure you have an uptodate/latest kernel+tools when
> fixing the few damaged files.
> With btrfs inspect-internal inode-resolve 257
> you can see what file(s) are damaged.
I inspected the damaged files,
On 03/29/2016 12:47 PM, Pete wrote:
> keyboard for example. Suspect it is why printing is not working at
> present. Is there anyway of pausing or cancelling so I can get stuff
...or it could be due to pulling out the usb cable when adding a disk...
--
To unsubscribe from this list: send the li
Hot replace / auto replace is important volume manager feature
and is critical to the data center operations, so that the degraded
volume can be brought back to a healthy state at the earliest and
without manual intervention.
This modifies the existing replace code to suite the need of auto
replac
From: Qu Wenruo
Now use the btrfs_check_degraded() to do mount time degraded check.
With this patch, now we can mount with the following case:
# mkfs.btrfs -f -m raid1 -d single /dev/sdb /dev/sdc
# wipefs -a /dev/sdc
# mount /dev/sdb /mnt/btrfs -o degraded
As the single data chunk is only in
From: Qu Wenruo
Just the same for mount time check, use new btrfs_check_degraded() to do
per chunk check.
Signed-off-by: Qu Wenruo
Btrfs: use btrfs_error instead of btrfs_err during remount
Signed-off-by: Anand Jain
---
fs/btrfs/super.c | 11 +++
1 file changed, 7 insertions(+), 4 d
Spare devices can be scanned but shouldn't be mountable.
Signed-off-by: Anand Jain
---
fs/btrfs/disk-io.c | 8
1 file changed, 8 insertions(+)
diff --git a/fs/btrfs/disk-io.c b/fs/btrfs/disk-io.c
index 7f02f1766037..b99329e37965 100644
--- a/fs/btrfs/disk-io.c
+++ b/fs/btrfs/disk-io.c
This adds functions to get and put a spare device from the list.
So that hot repace code can pick a spare device when needed.
Signed-off-by: Anand Jain
---
fs/btrfs/super.c | 9 +
fs/btrfs/volumes.c | 37 +
fs/btrfs/volumes.h | 2 ++
3 files change
Need device forced offline/failed feature for the following reasons,
1) a. it can be reported that device has failed when it does
b. close the device when it goes offline so that blocklayer can
cleanup
2) identify the candidate for the auto replace
3) avoid further commit error reported ag
When the user or system calls the BTRFS_IOC_SCAN_DEV,
ioctl this patch will make sure it is added to the device
list and set it as spare.
This operation will be same when BTRFS_IOC_DEVICES_READY
as well since BTRFS_IOC_DEVICES_READY ioctl has been doing
that by legacy.
Signed-off-by: Anand Jain
Add BTRFS_FEATURE_INCOMPAT_SPARE_DEV (400) flag to identify
a spare device.
Along with this it checks in the mount context that a spare
device will fail to mount. As spare devices aren't mountable.
Signed-off-by: Anand Jain
---
fs/btrfs/ctree.h | 4 +++-
1 file changed, 3 insertions(+), 1 dele
From: Qu Wenruo
The last user of num_tolerated_disk_barrier_failures is
barrier_all_devices(). But it's can be easily changed to new per-chunk
degradable check framework.
Now btrfs_device will have two extra members, representing send/wait
error, set at write_dev_flush() time. And then check it
From: Qu Wenruo
As we use per-chunk degradable check, now the global
num_tolerated_disk_barrier_failures is of no use. So cleanup it.
Signed-off-by: Qu Wenruo
[Btrfs: resolve conflict to apply 'btrfs: Cleanup
num_tolerated_disk_barrier_failures']
Signed-off-by: Anand Jain
---
fs/btrfs/ctree
Thanks for various comments, tests and feedback.
Background: Hot spare and Auto replace:
Hot spare is predominately used to mitigate or narrow the time
window of a storage in degraded mode during which any further disk
failure might lead to a catastrophic data loss. Data center
storage general
Signed-off-by: Anand Jain
---
cmds-filesystem.c | 4
1 file changed, 4 insertions(+)
diff --git a/cmds-filesystem.c b/cmds-filesystem.c
index 38404d29026e..0901c47e8679 100644
--- a/cmds-filesystem.c
+++ b/cmds-filesystem.c
@@ -351,6 +351,9 @@ static void print_one_uuid(struct btrfs_fs_devi
Adds a new sub command so that a global spare device can be
added. A sub cli is better so that we can enhance to provide
per FSID spare in future.
btrfs spare add ..
This will create a btrfs on the dev with the newly introduced
flag, BTRFS_FEATURE_INCOMPAT_SPARE_DEV. And then calls
btrfs_registe
Signed-off-by: Anand Jain
---
ctree.h | 4 +++-
volumes.c | 4
volumes.h | 2 ++
3 files changed, 9 insertions(+), 1 deletion(-)
diff --git a/ctree.h b/ctree.h
index 5ab0f4a45a15..97cbd032fbb1 100644
--- a/ctree.h
+++ b/ctree.h
@@ -480,6 +480,7 @@ struct btrfs_super_block {
#define BTRFS
This patch will add list of spare devices to the filesystem show
output, as show in the example below.
btrfs fi show
Label: none uuid: 17f7d403-17d7-4f0a-b8ba-de673fdd3f56
Total devices 2 FS bytes used 15.88MiB
devid1 size 2.00GiB used 417.50MiB path /dev/sdc
devid
Write and Flush errors are considered as critical errors,
upon which the device will be brought offline and marked as
failed. Write and Flush errors are identified using device
error statistics.
Signed-off-by: Anand Jain
btrfs: check for failed device and hot replace
This patch creates casualty
From: Anand Jain
This patch introduces profs interface /proc/fs/btrfs/devlist, which as of now
exports all the members of kernel fs_devices.
The current /sys/fs/btrfs interface works when the fs is mounted, and is on the
file directory hierarchy and also has the sysfs limitation max output of
Sorry the commit log should have been..
** This patch is not for integration but to debug/visualize the
btrfs device tree. **
This patch introduces profs interface /proc/fs/btrfs/devlist,
which as of now exports all the members of kernel fs_devices
including some of the patches in the ML.
From: Qu Wenruo
Introduce a new function, btrfs_check_degradable(), to judge if all chunks
in btrfs is OK for degraded mount.
It provides the new basis for accurate btrfs mount/remount and even
runtime degraded mount check other than old one-size-fit-all method.
Signed-off-by: Qu Wenruo
---
f
Hi Yauhen,
Thanks ! more below..
On 03/19/2016 03:39 AM, Yauhen Kharuzhy wrote:
Hi all,
I try to get Anand's patchset for global hotspare functionality working.
Now it's working for me but I have met number of issues while applying
and patches testing.
I took latest versions of patchset
On 03/19/2016 09:17 AM, Yauhen Kharuzhy wrote:
Issue 5:
Race between close_ctree() and casualty_kthread():
This is fixed in V2, thanks for the report.
- Anand
close_ctree():
if (fs_info->casualty_kthread)
kthread_stop(fs_info->casualty_kthread);
casualty_kthrea
Hi Anand,
[auto build test ERROR on btrfs/next]
[also build test ERROR on v4.6-rc1 next-20160329]
[if your patch is applied to the wrong git tree, please drop us a note to help
improving the system]
url:
https://github.com/0day-ci/linux/commits/Anand-Jain/btrfs-Introduce-a-new-function-to
Hi Anand,
[auto build test ERROR on btrfs/next]
[also build test ERROR on v4.6-rc1 next-20160329]
[if your patch is applied to the wrong git tree, please drop us a note to help
improving the system]
url:
https://github.com/0day-ci/linux/commits/Anand-Jain/btrfs-debug-procfs-devlist
Greetings Qu Wenruo,
I have reviewed the dedup patchset found in the github account you
mentioned. I have several questions. Please note that by all means I
am not criticizing your design or code. I just want to make sure that
my understanding of the code is proper.
1) You mentioned in several em
Hi Qu, Wang,
On Tue, Mar 22, 2016 at 3:35 AM, Qu Wenruo wrote:
> Since we will introduce a new on-disk based dedupe method, introduce new
> interfaces to resume previous dedupe setup.
>
> And since we introduce a new tree for status, also add disable handler
> for it.
>
> Signed-off-by: Wang Xiao
On 2016-03-29 10:22, Anand Jain wrote:
Thanks for various comments, tests and feedback.
Background: Hot spare and Auto replace:
Hot spare is predominately used to mitigate or narrow the time
window of a storage in degraded mode during which any further disk
failure might lead to a catastro
Hello,
Your experience looks similar to an issue that I've been running into
recently. I have a btrfs array in RAID0 with compression=lzo set.
The machine runs fine for awhile, then crashes at (seemingly) random
with an error message in the journal about a stuck CPU and an issue
with the kworker
On Tue, Mar 29, 2016 at 10:41:36PM +0800, Anand Jain wrote:
>
> >Issue 2.
> >At start of autoreplacig drive by hotspare, kernel craches in transaction
> >handling code (inside of btrfs_commit_transaction() called by autoreplace
> >initiating
> >routines). I 'fixed' this by removing of closing of
Hi.
I am testing hotspare v2 on kernel v4.4.5 (I will try latest Chris' tree later)
now with lockdep debugging enabled. At starting of replacement, lockdep warning
is displayed,
because kstrdup() is called with GFP_NOFS inside of rcu_read_lock/unlock()
block (GFP_NOFS can sleep).
[ 1463.470875]
On Tue, Mar 29, 2016 at 10:41:36PM +0800, Anand Jain wrote:
>
> Hi Yauhen,
>
> >
> >Issue 2.
> >At start of autoreplacig drive by hotspare, kernel craches in transaction
> >handling code (inside of btrfs_commit_transaction() called by autoreplace
> >initiating
> >routines). I 'fixed' this by re
On 2016-03-29 15:24, Yauhen Kharuzhy wrote:
On Tue, Mar 29, 2016 at 10:41:36PM +0800, Anand Jain wrote:
No. No. No please don't do that, it would lead to trouble in handing
slow devices. I purposely didn't do it.
Hmm. Can you explain please? Sometimes admins may want to have
autoreplaceme
On Mon, Mar 21, 2016 at 05:38:44PM +, fdman...@kernel.org wrote:
> From: Filipe Manana
>
> If the lower or upper directory of an overlayfs mount belong to a btrfs
> file system and we fsync the file through the overlayfs' merged directory
> we ended up accessing an inode that didn't belong to
Greetings all,
I'm running 4.4.0 from deb sid
My server crashed during a balance after I had added 10 disks to the
original 15, I have not been able to bring the FS up since, it causes
a system crash
btrfs fi sh looks fine, but when I mount , it crashes the server with
a NULL pointer dereference
On Tue, Mar 29, 2016 at 1:59 PM, Austin S. Hemmelgarn
wrote:
> On 2016-03-29 15:24, Yauhen Kharuzhy wrote:
>>
>> On Tue, Mar 29, 2016 at 10:41:36PM +0800, Anand Jain wrote:
>>>
>>>
>>> No. No. No please don't do that, it would lead to trouble in handing
>>> slow devices. I purposely didn't do
On Tue, Mar 29, 2016 at 2:21 PM, Warren, Daniel
wrote:
> Greetings all,
>
> I'm running 4.4.0 from deb sid
>
> My server crashed during a balance after I had added 10 disks to the
> original 15, I have not been able to bring the FS up since, it causes
> a system crash
>
> btrfs fi sh looks fine, b
If device replace entry was found on disk at mounting and its num_write_errors
stats counter has non-NULL value, then replace operation will never be
finished and -EIO error will be reported by btrfs_scrub_dev() because
this counter is never reset.
# mount -o degraded /media/a4fb5c0a-21c5-4fe7-8d
On 29 March 2016 at 22:46, Chris Murphy wrote:
> On Tue, Mar 29, 2016 at 2:21 PM, Warren, Daniel
> wrote:
>> Greetings all,
>>
>> I'm running 4.4.0 from deb sid
>>
>> btrfs fi sh http://pastebin.com/QLTqSU8L
>> kernel panic http://pastebin.com/aBF6XmzA
>
> Panic shows:
> CPU: 0 PID: 153 Comm: kwo
From: Julio Montes
Signed-off-by: Julio Montes
---
ioctl.h | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/ioctl.h b/ioctl.h
index cab9ec2..7c80807 100644
--- a/ioctl.h
+++ b/ioctl.h
@@ -94,7 +94,7 @@ struct btrfs_ioctl_vol_args_v2 {
};
union {
On Tue, Mar 29, 2016 at 10:22:29PM +0800, Anand Jain wrote:
> Write and Flush errors are considered as critical errors,
> upon which the device will be brought offline and marked as
> failed. Write and Flush errors are identified using device
> error statistics.
>
> Signed-off-by: Anand Jain
>
>
Warren, Daniel posted on Tue, 29 Mar 2016 16:21:28 -0400 as excerpted:
> I'm running 4.4.0 from deb sid
Correction.
According to the kernel panic you posted at...
http://pastebin.com/aBF6XmzA
... you're running kernel 3.16.something.
You might be running btrfs-progs userspace 4.4.0, but on mo
Reproduced with mason's for-linus-4.6 branch also.
2016-03-29 12:47 GMT-07:00 Yauhen Kharuzhy :
> On Tue, Mar 29, 2016 at 10:41:36PM +0800, Anand Jain wrote:
>>
>> Hi Yauhen,
>>
>
>> >
>> >Issue 2.
>> >At start of autoreplacig drive by hotspare, kernel craches in transaction
>> >handling code (ins
Hi, I got this warning on dmesg:
PAX: size overflow detected in function btrfs_get_extent
fs/btrfs/inode.c:6690 cicus.1228_386 min, count: 104, decl: len; num: 0;
context: extent_map;
Which was followed by this Call Trace:
[ 354.375166] Call Trace:
[ 354.375173] [] ? dump_stack+0x47/0x72
[
This patch adds tracepoints to the qgroup code on both the reporting side
(insert_dirty_extents) and the accounting side. Taken together it allows us
to see what qgroup operations have happened, and what their result was.
Signed-off-by: Mark Fasheh
---
fs/btrfs/qgroup.c| 9 +
in
Alex Lyakas wrote on 2016/03/29 19:31 +0200:
Hi Qu, Wang,
On Tue, Mar 22, 2016 at 3:35 AM, Qu Wenruo wrote:
Since we will introduce a new on-disk based dedupe method, introduce new
interfaces to resume previous dedupe setup.
And since we introduce a new tree for status, also add disable han
Alex Lyakas wrote on 2016/03/29 19:22 +0200:
Greetings Qu Wenruo,
I have reviewed the dedup patchset found in the github account you
mentioned. I have several questions. Please note that by all means I
am not criticizing your design or code. I just want to make sure that
my understanding of th
On Tue, Mar 29, 2016 at 10:22:29PM +0800, Anand Jain wrote:
> Write and Flush errors are considered as critical errors,
> upon which the device will be brought offline and marked as
> failed. Write and Flush errors are identified using device
> error statistics.
>
> Signed-off-by: Anand Jain
>
>
Hi list,
I just started to use send / receive for backups to another drive.
That's a great feature, but unfortunately I'm getting page allocation
failure, see below.
My backup script does something like this for 11 sub-volumes:
btrfs subvolume snapshot -r vol /snaps
btrfs fi sync /snaps
btr
On Mon, Mar 28, 2016 at 09:51:43PM +0300, Nazar Mokrynskyi wrote:
> However, despite those messages everything seems to work fine.
In my case, trying to balance the filesystem results in a the balance
not finishing in hours, I/O performance going way down during the
balance, and a plethora of kern
On Tue, Mar 29, 2016 at 08:43:51AM +0200, Marc Haber wrote:
> On Mon, Mar 28, 2016 at 03:35:32PM -0400, Austin S. Hemmelgarn wrote:
> > As far as what the kernel is involved with, the easy way to check is if it's
> > operating on a mounted filesystem or not. If it only operates on mounted
> > file
On Mon, Mar 28, 2016 at 02:46:54PM -0600, Chris Murphy wrote:
> http://git.kernel.org/cgit/linux/kernel/git/kdave/btrfs-progs.git/tree/cmds-check.c
> line 7722 discusses this error message and it looks like there's no
> repair function for it yet; uncertain what problems can result from
> this.
Th
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