[Samba] (DeviceIoControl, FSCTL_SET_SPARSE)
noid at wolfdogg.org
noid at wolfdogg.org
Thu Feb 16 09:38:50 UTC 2017
Hi Again,
Doing some testing just now with `dd if=/dev/zero of=./sparser.img bs=1 count=0 seek=0` and `truncate -s 0 asparsefile` with no issues on the share, but not across samba. I was thinking, what If I mounted that to /mnt using cifs, and try to use the linux to use the same two methods above as a test. Ill probably will have done that by the next reply, however any thoughts on that are welcome.
Brian
-----Original Message-----
From: noid at wolfdogg.org [mailto:noid at wolfdogg.org]
Sent: Thursday, February 16, 2017 1:21 AM
To: 'samba at lists.samba.org' <samba at lists.samba.org>
Subject: RE: [Samba] (DeviceIoControl, FSCTL_SET_SPARSE)
Hi David,
Configured as you mention, and prior with the other tweaks I had in the first place, Im getting the same results, which is "FSUTIL utility requires a Local NTFS Volume", and mapping it.
I then went to contig, `contig -n X:\share\sparesefile 0`, as well as a few other size. Maybe im using it wrong, but some testing on contig has only "Access is denied" when I try to write to anything.
Oh one change, I put these settings only in Global (only, as opposed to also in the pool definition), I just realized. I believe global should be enough shouldn’t it?
[global]
# ZFS SPARSE
#share:fake_fscaps = 0
store dos attributes = yes
strict allocate = yes
I hadn’t heard any mention of the importance of strict allocate, would that setting be wise then?
What are some other tools I might try that with? I can try straight on the linux too, just as a test, if there is any tools recommended to test that with. I will also look something up for that tomorrow as well.
Thanks for the info, much appreciated.
-Brian
-----Original Message-----
From: samba [mailto:samba-bounces at lists.samba.org] On Behalf Of David Disseldorp via samba
Sent: Wednesday, February 15, 2017 5:23 AM
To: brian lamb via samba <samba at lists.samba.org>
Subject: Re: [Samba] (DeviceIoControl, FSCTL_SET_SPARSE)
On Tue, 14 Feb 2017 23:16:22 -0800, brian lamb via samba wrote:
> Thanks for your response.
>
> The Error message is for e.g.:
>
> Cannot write file attributes of "\\MYHOST\backup\sparse\My Family Tree 6.0.zip.ffs_tmp".
> Error Code 1: Incorrect function. (DeviceIoControl, FSCTL_SET_SPARSE)
Hmm, that seems to indicate that the initial fsctl request is failing.
Could you please try manually setting a file on the Samba share as sparse with "fsutil sparse setflag <file_on_samba_share>":
https://technet.microsoft.com/en-us/library/cc788025(v=ws.11).aspx
Does it succeed when Samba is configured as per below?
> Samba Version:
> Samba version 4.4.4
> PID Username Group Machine Protocol Version Encryption Signing
> ----------------------------------------------------------------------------------------------------------------------------------------
> 21582 backupadmin sys1 myhost (ipv4:192.168.1.99:55068) SMB2_10 - -
>
> I just tried the option " store dos attributes = no"
> Im getting the same error as above still unfortunately, but im doing
> some more thorough testing on that. WOud you happen to know if I want
> the other two options set, and to what, at all? (> strict allocate &
> share:fake_fscaps = 0)
Given that the application is complaining about FSCTL_SET_SPARSE failure, I would guess that it requires sparse-file support. Please set "store dos attributes = yes" and drop the fake_fscaps setting.
Cheers, David
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