From: richard -rw- weinberger <richard.weinberger@gmail.com>
To: Bill Pringlemeir <bpringlemeir@nbsps.com>
Cc: "linux-mtd@lists.infradead.org" <linux-mtd@lists.infradead.org>
Subject: Re: Fail to mount cloned disk image with fastmap.
Date: Thu, 15 Aug 2013 23:16:57 +0200 [thread overview]
Message-ID: <CAFLxGvzq+ahoW6J4MUadZ_WbQAsKZ2SNgUgoipyzKzNzpGTnfg@mail.gmail.com> (raw)
In-Reply-To: <87a9kjt73h.fsf@nbsps.com>
On Thu, Aug 15, 2013 at 3:29 PM, Bill Pringlemeir
<bpringlemeir@nbsps.com> wrote:
>
> 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,
BTW: What exactly does "my kernel does not boot" mean?
Does it also fail at the said WARN_ON()?
The WARN_ON() can also trigger if made the image in a wrong way.
A truncated image would explain both error messages.
> 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] [<ffffffff810587ef>] warn_slowpath_common+0x7f/0xc0
> [1232073.339862] [<ffffffff8105884a>] warn_slowpath_null+0x1a/0x20
> [1232073.339866] [<ffffffffa0f271e9>] ubi_attach_fastmap+0x9b9/0xb50 [ubi]
> [1232073.339870] [<ffffffffa0f27801>] ubi_scan_fastmap+0x441/0x7b0 [ubi]
> [1232073.339874] [<ffffffffa0f24102>] scan_fast+0x192/0x1b0 [ubi]
> [1232073.339878] [<ffffffffa0f248b0>] ubi_attach+0x120/0x240 [ubi]
> [1232073.339882] [<ffffffffa0f17886>] ubi_attach_mtd_dev+0x766/0xe90 [ubi]
> [1232073.339886] [<ffffffffa0e386cd>] ? __get_mtd_device+0x1d/0x80 [mtd]
> [1232073.339889] [<ffffffffa0f3744c>] ubi_init+0x226/0xdda [ubi]
> [1232073.339893] [<ffffffffa0f37226>] ? ubi_mtd_param_parse+0x226/0x226 [ubi]
> [1232073.339896] [<ffffffff8100215a>] do_one_initcall+0x12a/0x180
> [1232073.339900] [<ffffffff810c0127>] load_module+0x10c7/0x1520
> [1232073.339902] [<ffffffff810bba20>] ? unset_module_init_ro_nx+0x80/0x80
> [1232073.339904] [<ffffffff810c0645>] sys_init_module+0xc5/0xf0
> [1232073.339907] [<ffffffff816d521d>] 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] [<ffffffffa0f2231e>] ubi_wl_init+0x62e/0x660 [ubi]
> [1232073.344768] [<ffffffffa0f2490b>] ubi_attach+0x17b/0x240 [ubi]
> [1232073.344772] [<ffffffffa0f17886>] ubi_attach_mtd_dev+0x766/0xe90 [ubi]
> [1232073.344777] [<ffffffffa0e386cd>] ? __get_mtd_device+0x1d/0x80 [mtd]
> [1232073.344780] [<ffffffffa0f3744c>] ubi_init+0x226/0xdda [ubi]
> [1232073.344783] [<ffffffffa0f37226>] ? ubi_mtd_param_parse+0x226/0x226 [ubi]
> [1232073.344787] [<ffffffff8100215a>] do_one_initcall+0x12a/0x180
> [1232073.344792] [<ffffffff810c0127>] load_module+0x10c7/0x1520
> [1232073.344794] [<ffffffff810bba20>] ? unset_module_init_ro_nx+0x80/0x80
> [1232073.344796] [<ffffffff810c0645>] sys_init_module+0xc5/0xf0
> [1232073.344799] [<ffffffff816d521d>] 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
>
> ______________________________________________________
> Linux MTD discussion mailing list
> http://lists.infradead.org/mailman/listinfo/linux-mtd/
--
Thanks,
//richard
prev parent reply other threads:[~2013-08-15 21:17 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-08-15 13:29 Fail to mount cloned disk image with fastmap Bill Pringlemeir
2013-08-15 18:23 ` Bill Pringlemeir
2013-08-15 20:55 ` richard -rw- weinberger
2013-08-16 19:46 ` Bill Pringlemeir
2013-08-16 19:59 ` Richard Weinberger
2013-08-15 21:16 ` richard -rw- weinberger [this message]
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