On 2021-07-24 21:44, Jens Axboe wrote:
On 7/24/21 12:23 PM, Forza wrote:
Hi!
On 2021-07-24 19:04, Jens Axboe wrote:
I'll see if I can reproduce this. I'm assuming samba is using buffered
IO, and it looks like it's reading in chunks of 1MB. Hopefully it's
possible to reproduce without samba with a windows client, as I don't
have any of those. If synthetic reproducing fails, I can try samba
with a Linux client.
I attached the logs from both a Windows 10 client and a Linux client
(kernel 5.11.0).
https://paste.tnonline.net/files/r4yebSzlGEVD_linux-client.txt
smbd_smb2_read: fnum 2641229669, file
media/vm/libvirt/images/Mint_Cinnamon.img, length=4194304
offset=736100352 read=4194304
[2021/07/24 17:26:09.120779, 3]
../../source3/smbd/smb2_read.c:415(smb2_read_complete)
smbd_smb2_read: fnum 2641229669, file
media/vm/libvirt/images/Mint_Cinnamon.img, length=4194304
offset=740294656 read=4194304
[2021/07/24 17:26:09.226593, 3]
../../source3/smbd/smb2_read.c:415(smb2_read_complete)
smbd_smb2_read: fnum 2641229669, file
media/vm/libvirt/images/Mint_Cinnamon.img, length=4194304
offset=748683264 read=4194304
Thanks, this is useful. Before I try and reproduce it, what is the
filesystem that is hosting the samba mount?
I am using Btrfs.
My testing was done by exporting the share with
vfs objects = io_uring
vfs objects = btrfs, io_uring
Same results in both cases. Exporting with "vfs objects = btrfs" (no
io_uring) works as expected.
Thanks.
