search for: bpftrace

After upgrading to 8.1.1911, bcc-tools and bpftrace seem to be broken. Current package versions I have: bpftrace-0.9-3.el8.x86_64 and bcc-tools-0.8.0-4.el8.x86_64 Both of these seem to be pulling in LLVM version 7, rather than the version 8 that is in 8.1.1911: [root at localhost ~]# bpftrace bpftrace: error while loading shared libraries: libclan...

...hing wrong when doing >>>> a copy with linked SQEs (normal copy seems no problem). >>>> >>> >>> I am inclined to agree with you. I also test liburing examples apps >>> on ext4 partition, everything looks fine. >>> >>> I used below bpftrace method, the retval is '3'. >>> ??bpftrace -e 'kr:mnt_get_count{printf("%d\n", retval);}' >>> >>> It responds to flow: path_umount() => do_umount => mnt_get_count (gets '3') >>> >> Yes, that's the place return EBUS...

...opy seems no problem). >>>>>>> >>>>>> >>>>>> I am inclined to agree with you. I also test liburing examples apps >>>>>> on ext4 partition, everything looks fine. >>>>>> >>>>>> I used below bpftrace method, the retval is '3'. >>>>>> ??bpftrace -e 'kr:mnt_get_count{printf("%d\n", retval);}' >>>>>> >>>>>> It responds to flow: path_umount() => do_umount => mnt_get_count (gets '3') >>>>>&gt...

...in VFS layer. I guess something wrong when doing >>> a copy with linked SQEs (normal copy seems no problem). >>> >> >> I am inclined to agree with you. I also test liburing examples apps >> on ext4 partition, everything looks fine. >> >> I used below bpftrace method, the retval is '3'. >> ?bpftrace -e 'kr:mnt_get_count{printf("%d\n", retval);}' >> >> It responds to flow: path_umount() => do_umount => mnt_get_count (gets '3') >> > Yes, that's the place return EBUSY. > So the probl...

...>> a copy with linked SQEs (normal copy seems no problem). > >>>> > >>> > >>> I am inclined to agree with you. I also test liburing examples apps > >>> on ext4 partition, everything looks fine. > >>> > >>> I used below bpftrace method, the retval is '3'. > >>> ??bpftrace -e 'kr:mnt_get_count{printf("%d\n", retval);}' > >>> > >>> It responds to flow: path_umount() => do_umount => mnt_get_count (gets '3') > >>> > >> Yes, that...

...Es (normal copy seems no problem). > > >>>> > > >>> > > >>> I am inclined to agree with you. I also test liburing examples apps > > >>> on ext4 partition, everything looks fine. > > >>> > > >>> I used below bpftrace method, the retval is '3'. > > >>> ??bpftrace -e 'kr:mnt_get_count{printf("%d\n", retval);}' > > >>> > > >>> It responds to flow: path_umount() => do_umount => mnt_get_count (gets '3') > > >>> > &...

...that it hasn't been called. > So EBUSY is returned in VFS layer. I guess something wrong when doing > a copy with linked SQEs (normal copy seems no problem). > I am inclined to agree with you. I also test liburing examples apps on ext4 partition, everything looks fine. I used below bpftrace method, the retval is '3'. bpftrace -e 'kr:mnt_get_count{printf("%d\n", retval);}' It responds to flow: path_umount() => do_umount => mnt_get_count (gets '3') Thanks, Heming > > On 2/24/23 8:32 AM, Heming Zhao wrote: >> Hello List, >>...

...gt;>>>>>>> >>>>>>> >>>>>>> I am inclined to agree with you. I also test liburing examples apps >>>>>>> on ext4 partition, everything looks fine. >>>>>>> >>>>>>> I used below bpftrace method, the retval is '3'. >>>>>>> ??bpftrace -e 'kr:mnt_get_count{printf("%d\n", retval);}' >>>>>>> >>>>>>> It responds to flow: path_umount() => do_umount => mnt_get_count (gets '3') >>&gt...

...;> So EBUSY is returned in VFS layer. I guess something wrong when doing >> a copy with linked SQEs (normal copy seems no problem). >> > > I am inclined to agree with you. I also test liburing examples apps > on ext4 partition, everything looks fine. > > I used below bpftrace method, the retval is '3'. > ?bpftrace -e 'kr:mnt_get_count{printf("%d\n", retval);}' > > It responds to flow: path_umount() => do_umount => mnt_get_count (gets '3') > Yes, that's the place return EBUSY. So the problem seems to be getmnt/put...

I can reproduce this in my local VM. I've traced ocfs2_dismount_volume and found that it hasn't been called. So EBUSY is returned in VFS layer. I guess something wrong when doing a copy with linked SQEs (normal copy seems no problem). Thanks, Joseph On 2/24/23 8:32 AM, Heming Zhao wrote: > Hello List, > > I found a weird bug on ocfs2. I am busying with other jobs, if anyone

On Wed, Aug 16, 2023 at 10:24?AM Xuan Zhuo <xuanzhuo at linux.alibaba.com> wrote: > > On Wed, 16 Aug 2023 10:19:34 +0800, Jason Wang <jasowang at redhat.com> wrote: > > On Wed, Aug 16, 2023 at 10:16?AM Xuan Zhuo <xuanzhuo at linux.alibaba.com> wrote: > > > > > > On Wed, 16 Aug 2023 09:13:48 +0800, Jason Wang <jasowang at redhat.com> wrote: >