Package: linux-image-3.16.0-4-amd64 Version: 3.16.7-ckt9-3~deb8u1 Severity: normal
Dear maintainer, my Xen dom0 is printing thousands of these messages to its logs: # journalctl -b |grep "xen:balloon: Cannot add additional memory (-17)" | wc -l 126892 # uptime 20:50:08 up 3 days, 8:28, 7 users, load average: 0.21, 0.07, 0.06 The messages start occuring the first time I shutdown a domU. Due to using this dom0 for Xen unikernel testing, such shutdowns are a common occurence. Some shutdowns cause a few of these messages, some cause hundreds. The dom0 has memory ballooning disabled: # grep dom0_mem /etc/default/grub GRUB_CMDLINE_XEN="dom0_mem=4096M,max:4096M loglvl=info guest_loglvl=info" # grep autoballoon /etc/xen/xl.conf autoballoon="0" Note that despite the memory setting above, the dom0 has not been allocated exactly the amount asked for: # xl list 0 Name ID Mem VCPUs State Time(s) Domain-0 0 4051 8 r----- 5606.1 I am also including an excerpt from "xl dmesg", in case this helps: (XEN) *** LOADING DOMAIN 0 *** (XEN) Xen kernel: 64-bit, lsb, compat32 (XEN) Dom0 kernel: 64-bit, PAE, lsb, paddr 0x1000000 -> 0x1f18000 (XEN) PHYSICAL MEMORY ARRANGEMENT: (XEN) Dom0 alloc.: 0000000814000000->0000000818000000 (1031107 pages to be allocated) (XEN) Init. ramdisk: 000000082fbc3000->000000082ffff212 (XEN) VIRTUAL MEMORY ARRANGEMENT: (XEN) Loaded kernel: ffffffff81000000->ffffffff81f18000 (XEN) Init. ramdisk: ffffffff81f18000->ffffffff82354212 (XEN) Phys-Mach map: ffffffff82355000->ffffffff82b55000 (XEN) Start info: ffffffff82b55000->ffffffff82b554b4 (XEN) Page tables: ffffffff82b56000->ffffffff82b6f000 (XEN) Boot stack: ffffffff82b6f000->ffffffff82b70000 (XEN) TOTAL: ffffffff80000000->ffffffff82c00000 (XEN) ENTRY ADDRESS: ffffffff819021f0 (XEN) Dom0 has maximum 8 VCPUs Bug #776448 claims to have fixed this problem, however it seems that the fix is incomplete? Thanks, Martin -- To UNSUBSCRIBE, email to debian-kernel-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org Archive: https://lists.debian.org/20150507190215.gd5...@nodbug.lucina.net
