Just fyi, I have committed r337962 to head, which stops the pNFS service
from creating non-zero length empty files.
Since these files were the ones causing the "ffs_truncate3" panics, the panics
should no longer occur.
I will take a closer look at some point to see if I can spot why the panics()
Konstantin Belousov wrote:
[stuff snipped]
>Problem with this buffer is that BX_ALTDATA bit is not set.
>This is the reason why vinvalbuf(V_ALT) skips it.
[more stuff snipped]
>The vnode is exclusively locked. Other thread must not be able to
>instantiate a buffer under us.
That's what I thought,
On Sat, Aug 11, 2018 at 12:05:25PM +, Rick Macklem wrote:
> Konstantin Belousov wrote:
> >On Thu, Aug 09, 2018 at 08:38:50PM +, Rick Macklem wrote:
> >> >BTW, does NFS server use extended attributes ? What for ? Can you,
> >> >please,
> >> >point out the code which does this ?
> >> For
Konstantin Belousov wrote:
>On Thu, Aug 09, 2018 at 08:38:50PM +, Rick Macklem wrote:
>> >BTW, does NFS server use extended attributes ? What for ? Can you, please,
>> >point out the code which does this ?
>> For the pNFS service, there are two system namespace extended attributes for
>>
On Thu, Aug 09, 2018 at 08:38:50PM +, Rick Macklem wrote:
> >BTW, does NFS server use extended attributes ? What for ? Can you, please,
> >point out the code which does this ?
> For the pNFS service, there are two system namespace extended attributes for
> each file stored on the service.
>
Konstantin Belousov wrote:
>On Thu, Aug 09, 2018 at 08:38:50PM +, Rick Macklem wrote:
>> I did notice that my code locks the vnode first and then calls
>> vn_start_write()
>> for the vn_extattr_set() calls, whereas the syscall code locks the vnode
>> after the vn_start_write() call.
>>
>>
On Thu, Aug 09, 2018 at 08:38:50PM +, Rick Macklem wrote:
> I did notice that my code locks the vnode first and then calls
> vn_start_write()
> for the vn_extattr_set() calls, whereas the syscall code locks the vnode
> after the vn_start_write() call.
>
> Does that matter?
Yes, it matter.
Konstantin Belousov wrote:
[stuff snipped]
>I wrote:
>>
>> I can add printf()s anywhere you suggest, but I'm not sure how you would
>> catch
>> this case sooner? (For example, I could print out di_extsize at the
>> beginning of
>> ffs_truncate(), if that would help?)
>May be, add a loop at the
Rodney W. Grimes wrote:
[stuff snipped]
>It should be possible to design a set of VM's using bhyve, xen or ones
>favorite hypervisor/virtulization platform to do "more" pNFS testing.
>If you could provide a rought machine set needed to have a functional
>test bed, and what should be done to "test"
> Konstantin Belousov wrote:
> [stuff snipped]
> >> >Can you print the only buffer on the clean queue when the panic occur ?
> >> ffst3 vtyp=1 bodirty=0 boclean=1
> >> buf at 0x428a110
> >> b_flags = 0x20001020, b_xflags=0x2, b_vflags=0x0
> >> b_error = 0, b_bufsize = 4096, b_bcount = 4096,
On Thu, Aug 09, 2018 at 01:39:20AM +, Rick Macklem wrote:
> Konstantin Belousov wrote:
> [stuff snipped]
> >> >Can you print the only buffer on the clean queue when the panic occur ?
> >> ffst3 vtyp=1 bodirty=0 boclean=1
> >> buf at 0x428a110
> >> b_flags = 0x20001020, b_xflags=0x2,
Konstantin Belousov wrote:
[stuff snipped]
>> >Can you print the only buffer on the clean queue when the panic occur ?
>> ffst3 vtyp=1 bodirty=0 boclean=1
>> buf at 0x428a110
>> b_flags = 0x20001020, b_xflags=0x2, b_vflags=0x0
>> b_error = 0, b_bufsize = 4096, b_bcount = 4096, b_resid = 0
>>
On Wed, Aug 08, 2018 at 12:30:54PM +, Rick Macklem wrote:
> Konstantin Belousov wrote:
> >On Tue, Aug 07, 2018 at 12:28:33PM +, Rick Macklem wrote:
> >> Hi,
> >>
> >> During testing of the pNFS server I get an ffs_truncate3 panic every once
> >> in a while.
> >> A few things that might be
On Wed, Aug 8, 2018 at 5:30 AM, Rick Macklem wrote:
> - Oh, and this is an old i386 with 256Mbytes (not one of them new fangled
> computers,
>where memory is in Gbytes;-)
Have you run memtest86+ recently?
Best,
Conrad
___
Konstantin Belousov wrote:
>On Tue, Aug 07, 2018 at 12:28:33PM +, Rick Macklem wrote:
>> Hi,
>>
>> During testing of the pNFS server I get an ffs_truncate3 panic every once in
>> a while.
>> A few things that might be relevant:
>> - Seems to happen more often when soft update journaling is
On Tue, Aug 07, 2018 at 12:28:33PM +, Rick Macklem wrote:
> Hi,
>
> During testing of the pNFS server I get an ffs_truncate3 panic every once in
> a while.
> A few things that might be relevant:
> - Seems to happen more often when soft update journaling is enabled, but will
> happen when
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