From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from 71-19-161-253.dedicated.allstream.net ([71.19.161.253] helo=nsa.nbspaymentsolutions.com) by merlin.infradead.org with esmtp (Exim 4.80.1 #2 (Red Hat Linux)) id 1V9xfO-0006GK-Db for linux-mtd@lists.infradead.org; Thu, 15 Aug 2013 13:32:43 +0000 Received: from DeadDuck (unknown [172.20.177.82]) by nsa.nbspaymentsolutions.com (Postfix) with ESMTP id D9E683FC47D for ; Thu, 15 Aug 2013 09:34:06 -0400 (EDT) From: Bill Pringlemeir To: linux-mtd@lists.infradead.org Subject: Fail to mount cloned disk image with fastmap. Date: Thu, 15 Aug 2013 09:29:54 -0400 Message-ID: <87a9kjt73h.fsf@nbsps.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii List-Id: Linux MTD discussion mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , I have back-ported the fastmap code from the 3.0 series to a 2.6.36 kernel on an ARM cpu. It has been running for some time without issue and the boot time is reduced by 1/2 second. I just ran a test over night with 'pppd' capturing packets and likely filled up the disk. It appears that my kernel does not boot, so I made a clone of the disk and then attempt to mount it on my Ubuntu machine with the following, modprobe nandsim first_id_byte=0x2c second_id_byte=0xda \ third_id_byte=0x90 fourth_id_byte=0x95 parts=2,64,64 flash_erase /dev/mtd3 0 0 ubiformat /dev/mtd3 -f rootfs.ubi modprobe ubi mtd=3 fm_autoconvert=0 Actually at first, I did not specify the 'fm_autoconvert'. In both case, the 'modprobe' of the UBI fails with the 3.8 Ubuntu kernel. I though that if I specify 'fm_autoconvert=0', none of the 'fastmap' code should be active? Should I re-compile without MTD_UBI_FASTMAP to see if I can mount the file system? I would like to be able to look at the file system, even in read-only mode. The kernel logs are below from the 'ubi' modprobe. Is there actually an issue here with UBI? When I try to mount the 'ubi' partition with, mount -t ubifs -o ro /dev/ubi0_3 /mnt/ubifs additional issues are encountered. But I think that some of the UBI issues might be a problem? Can I use some other flash with a bigger size so that 'PEBs' can be reserved? Of course, I have the disk image and can send additional information. Thanks, Bill Pringlemeir. [1232060.158586] ubi: `0' invalid for parameter `ubi.fm_autoconvert' [1232069.536856] ubi: `0' invalid for parameter `fm_autoconvert_bla' [1232073.333755] UBI: default fastmap pool size: 95 [1232073.333761] UBI: default fastmap WL pool size: 25 [1232073.333765] UBI: attaching mtd3 to ubi0 [1232073.339804] ------------[ cut here ]------------ [1232073.339814] WARNING: at /build/buildd/linux-3.8.0/drivers/mtd/ubi/fastmap.c:827 ubi_attach_fastmap+0x9b9/0xb50 [ubi]() [1232073.339815] Hardware name: 421511U [1232073.339816] Modules linked in: ubi(+) deflate(F) zlib_deflate(F) mtdchar nandsim nand nand_ecc nand_bch bch(F) nand_ids mtd romfs nfnetlink(F) arc4(F) md4(F) nls_utf8 cif s(F) fscache(F) parport_pc(F) ppdev(F) rfcomm bnep bluetooth binfmt_misc(F) dm_crypt(F) coretemp kvm cdc_subset cdc_eem usbnet snd_hda_codec_realtek snd_hda_intel snd_hda_code c snd_hwdep(F) snd_pcm(F) snd_page_alloc(F) snd_seq_midi(F) snd_seq_midi_event(F) snd_rawmidi(F) snd_seq(F) gpio_ich snd_seq_device(F) snd_timer(F) mac_hid snd(F) nvidia(POF) wmi soundcore(F) psmouse(F) lpc_ich mei serio_raw(F) lp(F) microcode(F) parport(F) hid_generic ghash_clmulni_intel(F) aesni_intel(F) aes_x86_64(F) xts(F) lrw(F) gf128mul(F) ablk_helper(F) cryptd(F) usbhid hid firewire_ohci 3c59x firewire_core crc_itu_t(F) e1000e(F) [last unloaded: ubi] [1232073.339854] Pid: 9420, comm: modprobe Tainted: PF W O 3.8.0-27-generic #40-Ubuntu [1232073.339855] Call Trace: [1232073.339860] [] warn_slowpath_common+0x7f/0xc0 [1232073.339862] [] warn_slowpath_null+0x1a/0x20 [1232073.339866] [] ubi_attach_fastmap+0x9b9/0xb50 [ubi] [1232073.339870] [] ubi_scan_fastmap+0x441/0x7b0 [ubi] [1232073.339874] [] scan_fast+0x192/0x1b0 [ubi] [1232073.339878] [] ubi_attach+0x120/0x240 [ubi] [1232073.339882] [] ubi_attach_mtd_dev+0x766/0xe90 [ubi] [1232073.339886] [] ? __get_mtd_device+0x1d/0x80 [mtd] [1232073.339889] [] ubi_init+0x226/0xdda [ubi] [1232073.339893] [] ? ubi_mtd_param_parse+0x226/0x226 [ubi] [1232073.339896] [] do_one_initcall+0x12a/0x180 [1232073.339900] [] load_module+0x10c7/0x1520 [1232073.339902] [] ? unset_module_init_ro_nx+0x80/0x80 [1232073.339904] [] sys_init_module+0xc5/0xf0 [1232073.339907] [] system_call_fastpath+0x1a/0x1f [1232073.339908] ---[ end trace f20e309ad7ab2d28 ]--- [1232073.339909] UBI error: ubi_scan_fastmap: Attach by fastmap failed, doing a full scan! [1232073.344416] UBI: scanning is finished [1232073.344751] UBI assert failed in ubi_wl_init at 1968 (pid 9420) [1232073.344753] Pid: 9420, comm: modprobe Tainted: PF W O 3.8.0-27-generic #40-Ubuntu [1232073.344754] Call Trace: [1232073.344764] [] ubi_wl_init+0x62e/0x660 [ubi] [1232073.344768] [] ubi_attach+0x17b/0x240 [ubi] [1232073.344772] [] ubi_attach_mtd_dev+0x766/0xe90 [ubi] [1232073.344777] [] ? __get_mtd_device+0x1d/0x80 [mtd] [1232073.344780] [] ubi_init+0x226/0xdda [ubi] [1232073.344783] [] ? ubi_mtd_param_parse+0x226/0x226 [ubi] [1232073.344787] [] do_one_initcall+0x12a/0x180 [1232073.344792] [] load_module+0x10c7/0x1520 [1232073.344794] [] ? unset_module_init_ro_nx+0x80/0x80 [1232073.344796] [] sys_init_module+0xc5/0xf0 [1232073.344799] [] system_call_fastpath+0x1a/0x1f [1232073.344818] UBI warning: print_rsvd_warning: cannot reserve enough PEBs for bad PEB handling, reserved 21, need 40 [1232073.345224] UBI: attached mtd3 (name "NAND simulator partition 3", size 239 MiB) to ubi0 [1232073.345228] UBI: PEB size: 131072 bytes (128 KiB), LEB size: 129024 bytes [1232073.345231] UBI: min./max. I/O unit sizes: 2048/2048, sub-page size 512