Am 24.07.21 um 21:51 schrieb Forza: > > > 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. I don't think it makes a difference for the current problem, but I guess you want the following order instead: vfs objects = io_uring, btrfs metze
