Hello, I forward some information wich was missing in the list. After this I write another message with some (good news for me and) information about things that I have found. Josep ---------- Forwarded message ---------- From: Josep Lladonosa <jlladono@xxxxxxxxx> Date: 11 February 2014 17:39 Subject: Re: bcache and memory at boot. Bug? To: matthew patton <pattonme@xxxxxxxxx> On 11 February 2014 12:23, matthew patton <pattonme@xxxxxxxxx> wrote: > > > >>> -Free memory with kernel 3.11.0-rc7 with 32GiB and bcache0 (halved?) >>>> and bcache1 (mounted) >>>> >>>> $ head -2 /proc/meminfo >>>> MemTotal: 32913872 kB >>>> MemFree: 12376640 kB >>>> >>>> >>>> - Free memory with kernel 3.12.9 with mem=16G and bcache0 (mounted) >>>> >>>> $ head -2 /proc/meminfo >>>> MemTotal: 15602144 kB >>>> MemFree: 14005372 kB > > > too many variables. Boot the same box with the SAME kernel, just twiddle how much ram is visible via the GRUB commandline. ... try with mem=16G and other values like 12G, 24G or 31G O.K. Here you are: With kernel 3.13.2: mem=2G ---> boots O.K. (/dev/bcache0). mem=4G ---> Out of memory. (initramfs appears with bcache0 and bcache1 for only one caching device. bcache1 has the two correct slaves). mem=8G ---> bcache-register killed. Kernel panic. mem=16G --> Out of memory (initramfs appears with bcache0 to bcache7 for only one caching device. bcache7 has the two correct slaves). mem=20G --> Out of memory (no initramfs prompt appearing). mem=24G --> Out of memory (initramfs appears with bcache0 to bcache9 for only one caching device. bcache9 has the two correct slaves). (the more RAM is given to box, the more messages about out of memory you get. Kernel 3.12.9 Command line: BOOT_IMAGE=/vmlinuz-3.12.9 root=/dev/bcache0 ro "acpi_osi=!Windows 2012" quiet mem=16G intel_pstate=disable pcie_aspm=force i915.i915_enable_rc6=1 i915.i915_enable_fbc=1 i915.lvds_downclock=1 rcutree.rcu_idle_gp_delay=1 (changing mem kernel boot parameter): mem=12G ---> boots O.K. (/dev/bcache0). mem=14G ---> boots O.K. (/dev/bcache0). mem=16G ---> boots O.K. (/dev/bcache0). mem=17G ---> boots O.K. (/dev/bcache0). mem=18G ---> boots O.K. (/dev/bcache0). mem=20G ---> Kernel panic. mem=24G ---> Kernel panic. mem=32G ---> Out of memory. (initramfs appears with bcache0 and bcache1 for only one caching device. bcache1 has the two correct slaves). With kernel 3.12.9, When booting, with udev info in /var/log/messages, there are memory allocation failure for bcache-register messages: Feb 11 17:22:10 minijep kernel: [ 3.099025] bio: create slab <bio-1> at 1 Feb 11 17:22:10 minijep kernel: [ 3.452716] bcache: bch_journal_replay() journal replay done, 575 keys in 49 entries, seq 573572 Feb 11 17:22:10 minijep kernel: [ 3.452777] vmalloc: allocation failure: 19327352836 bytes Feb 11 17:22:10 minijep kernel: [ 3.452780] bcache-register: page allocation failure: order:0, mode:0x80d2 Feb 11 17:22:10 minijep kernel: [ 3.452783] CPU: 0 PID: 298 Comm: bcache-register Not tainted 3.12.9 #1 Feb 11 17:22:10 minijep kernel: [ 3.452784] Hardware name: Micro-Star International Co., Ltd. GT60/MS-16F3, BIOS E16F3IMS.10U 01/21/2013 Feb 11 17:22:10 minijep kernel: [ 3.452786] 0000f72000000083 ffffffff8137e021 0000000000000001 ffffffff810c0864 Feb 11 17:22:10 minijep kernel: [ 3.452789] ffffffff814fdf94 ffff880036f65b70 0000000000000018 ffff880036f65be8 Feb 11 17:22:10 minijep kernel: [ 3.452792] ffff880036f65b88 ffff880036fc8b20 0000000000000000 0000000000000003 Feb 11 17:22:10 minijep kernel: [ 3.452795] Call Trace: Feb 11 17:22:10 minijep kernel: [ 3.452804] [<ffffffff8137e021>] ? dump_stack+0x41/0x51 Feb 11 17:22:10 minijep kernel: [ 3.452808] [<ffffffff810c0864>] ? warn_alloc_failed+0x118/0x12c Feb 11 17:22:10 minijep kernel: [ 3.452814] [<ffffffff810e7134>] ? __vmalloc_node_range+0x1cd/0x1de Feb 11 17:22:10 minijep kernel: [ 3.452817] [<ffffffff810e7171>] ? __vmalloc_node+0x2c/0x31 Feb 11 17:22:10 minijep kernel: [ 3.452827] [<ffffffffa01ebd1c>] ? bcache_device_init+0x81/0x241 [bcache] Feb 11 17:22:10 minijep kernel: [ 3.452832] [<ffffffff810e71ab>] ? vzalloc+0x21/0x22 Feb 11 17:22:10 minijep kernel: [ 3.452839] [<ffffffffa01ebd1c>] ? bcache_device_init+0x81/0x241 [bcache] Feb 11 17:22:10 minijep kernel: [ 3.452845] [<ffffffffa01ec05e>] ? flash_dev_run+0x7d/0x12b [bcache] Feb 11 17:22:10 minijep kernel: [ 3.452854] [<ffffffffa01ed88b>] ? run_cache_set+0x5c4/0x695 [bcache] Feb 11 17:22:10 minijep kernel: [ 3.452859] [<ffffffffa01eee47>] ? register_bcache+0x10a0/0x12d9 [bcache] Feb 11 17:22:10 minijep kernel: [ 3.452863] [<ffffffff810f0f15>] ? alloc_pages_current+0xef/0x109 Feb 11 17:22:10 minijep kernel: [ 3.452867] [<ffffffff81159855>] ? sysfs_write_file+0xcf/0x103 Feb 11 17:22:10 minijep kernel: [ 3.452871] [<ffffffff81106a23>] ? vfs_write+0xa8/0x10b Feb 11 17:22:10 minijep kernel: [ 3.452874] [<ffffffff8110705e>] ? SyS_write+0x41/0x74 Feb 11 17:22:10 minijep kernel: [ 3.452878] [<ffffffff81386ca2>] ? system_call_fastpath+0x16/0x1b Feb 11 17:22:10 minijep kernel: [ 3.452880] Mem-Info: Feb 11 17:22:10 minijep kernel: [ 3.452881] Node 0 DMA per-cpu: Feb 11 17:22:10 minijep kernel: [ 3.452883] CPU 0: hi: 0, btch: 1 usd: 0 Feb 11 17:22:10 minijep kernel: [ 3.452884] CPU 1: hi: 0, btch: 1 usd: 0 Feb 11 17:22:10 minijep kernel: [ 3.452886] CPU 2: hi: 0, btch: 1 usd: 0 Feb 11 17:22:10 minijep kernel: [ 3.452887] CPU 3: hi: 0, btch: 1 usd: 0 Feb 11 17:22:10 minijep kernel: [ 3.452888] CPU 4: hi: 0, btch: 1 usd: 0 Feb 11 17:22:10 minijep kernel: [ 3.452889] CPU 5: hi: 0, btch: 1 usd: 0 Feb 11 17:22:10 minijep kernel: [ 3.452890] CPU 6: hi: 0, btch: 1 usd: 0 Feb 11 17:22:10 minijep kernel: [ 3.452892] CPU 7: hi: 0, btch: 1 usd: 0 -- -- Salutacions...Josep -- -- -- Salutacions...Josep -- -- To unsubscribe from this list: send the line "unsubscribe linux-bcache" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
