CC cephfs list.
On Wed, Sep 26, 2018 at 02:17:39PM +0200, Peter Zijlstra wrote:
On Wed, Sep 26, 2018 at 08:02:58PM +0800, Fengguang Wu wrote:
CC LKP team.
On Wed, Sep 26, 2018 at 01:36:23PM +0200, Peter Zijlstra wrote:
> I've been slow posting these, because the 0-day bot seems to be having trouble
> and I've not been getting the regular cross-build green light emails that I
> otherwise rely upon.
Hi Philip, when will cephfs recover?
Ah, you guys had massive fs trouble? Best of luck with that.
I figured I'd prod you guys a bit, because I've heard a lot of
'complaining' about 0day bot not working on IRC. It seems quite a lot of
people are 'silently' relying on that thing :-)
Yeah sorry. The build queues all turn red in our monitor tool.
dmesg shows lots of high order (10) allocation failures.
It's interesting cephfs will rely on such high order allocations.
The allocation size seems directly come from user space read request size.
[798565.679727] pstree[48300]: segfault at 0 ip 00007fd53a906ae4 sp 00007fff28c06200 error 4 in libc-2.24.so[7fd53a8a0000+1
95000]
[799491.313741] pxz: page allocation failure: order:10, mode:0x14040c0(GFP_KERNEL|__GFP_COMP), nodemask=(null)
[799491.327456] pxz cpuset=/ mems_allowed=0-1
[799491.333252] CPU: 15 PID: 34827 Comm: pxz Not tainted 4.16.0-0.bpo.2-amd64 #1 Debian 4.16.16-2~bpo9+1
[799491.344737] Hardware name: Intel Corporation S2600WTTR/S2600WTTR, BIOS SE5C610.86B.01.01.0022.062820171903 06/28/2017
[799491.357971] Call Trace:
[799491.362046] dump_stack+0x5c/0x85
[799491.367047] warn_alloc+0xfc/0x180
[799491.372757] __alloc_pages_slowpath+0xded/0xe00
[799491.379105] ? __cap_is_valid+0x1c/0xa0 [ceph]
[799491.385316] __alloc_pages_nodemask+0x212/0x250
[799491.391578] kmalloc_order+0x14/0x40
[799491.396732] kmalloc_order_trace+0x1d/0xa0
[799491.402451] ceph_alloc_page_vector+0x1d/0x80 [libceph]
[799491.409392] ceph_read_iter+0x448/0x930 [ceph]
[799491.415497] ? __lru_cache_add+0x52/0x60
[799491.420957] ? new_sync_read+0xe9/0x140
[799491.426288] ? ceph_write_iter+0xb50/0xb50 [ceph]
[799491.432620] new_sync_read+0xe9/0x140
[799491.437710] vfs_read+0x91/0x130
[799491.442287] SyS_read+0x52/0xc0
Thanks,
Fengguang
