[U-Boot] BUG: fastmap and u-boot's ubi write command
Richard Weinberger
richard at nod.at
Wed Sep 25 13:10:57 CEST 2013
Hi!
Am 25.09.2013 12:59, schrieb Richard Genoud:
>
> [CC u-boot ML since it may not be a kernel only related bug(s)]
>
> Hi Richard, Artem,
>
> I'm still playing with fastmap and I ran into something.
> It's involving u-boot's "ubi write" command and fastmap.
> What I'm doing is:
> - Flashing a mtd partition with a userspace.ubi image via u-boot
> - Booting linux one or to times
> - Flashing the UBI volume rootfs with a rootfs.ubifs image via u-boot
> - Booting linux one or to times.
>
> And, depending on fastmap not compiled/disable/auto I've got an ubi_assert that fails and a slowpath warning.
>
> Here's the story:
> U-Boot 2013.07
> Kernel 3.11.1
Before we waste time, please ensure that you have all recent UBI fixes applied.
UBI: Fix PEB leak in wear_leveling_worker() (Merged into 3.12-rc1, on it's way to -stable)
UBI: Fix invalidate_fastmap() (Merged into 3.12-rc1)
UBI: Fix refill_wl_user_pool() (Pending, http://lkml.org/lkml/2013/8/26/121)
> NAND:
> - 128KiB PEB
> - 2KiB page
> - 2048 PEB
> - no subpage
> mapping is:
> 0x000000000000-0x000000020000 : "dtb" (128KiB)
> 0x000000020000-0x000000a00000 : "Kernel" (9.875KiB)
> 0x000000a00000-0x00000ff80000 : "UBI" (245.5 KiB)
> 0x00000ff80000-0x000010000000 : "BBT" (512KiB)
>
> 1- With Fastmap NOT compiled
> - Flashing the UBI mtd partition under u-boot:
>> fatload usb 0 0x20008000 /userspace.ubi
>> nand device ubi
>> nand erase.part ubi
> NAND erase.part: device 0 offset 0xa00000, size 0xf580000
> OK
>> nand write.trimffs 0x20008000 ubi 35a0000
> NAND write: device 0 offset 0xa00000, size 0x35a0000
> 56229888 bytes written: OK
> Booting a non-FASTMAP kernel:
> [...]
> [ 0.789062] UBI: attaching mtd2 to ubi0
> [ 1.351562] UBI: scanning is finished
> [ 1.367187] UBI: attached mtd2 (name "UBI", size 245 MiB) to ubi0
> [ 1.375000] UBI: PEB size: 131072 bytes (128 KiB), LEB size: 126976 bytes
> [ 1.382812] UBI: min./max. I/O unit sizes: 2048/2048, sub-page size 2048
> [ 1.390625] UBI: VID header offset: 2048 (aligned 2048), data offset: 4096
> [ 1.398437] UBI: good PEBs: 1964, bad PEBs: 0, corrupted PEBs: 0
> [ 1.398437] UBI: user volume: 3, internal volumes: 1, max. volumes count: 128
> [ 1.406250] UBI: max/mean erase counter: 0/0, WL threshold: 4096, image sequence number: 891983656
> [ 1.414062] UBI: available PEBs: 2, total reserved PEBs: 1962, PEBs reserved for bad PEB handling: 40
> [ 1.421875] UBI: background thread "ubi_bgt0d" started, PID 354
> [ 1.437500] UBIFS: background thread "ubifs_bgt0_0" started, PID 356
> [ 1.523437] UBIFS: mounted UBI device 0, volume 0, name "rootfs"
> [ 1.523437] UBIFS: LEB size: 126976 bytes (124 KiB), min./max. I/O unit sizes: 2048 bytes/2048 bytes
> [ 1.531250] UBIFS: FS size: 63614976 bytes (60 MiB, 501 LEBs), journal size 8634368 bytes (8 MiB, 68 LEBs)
> [ 1.539062] UBIFS: reserved for root: 0 bytes (0 KiB)
> [ 1.546875] UBIFS: media format: w4/r0 (latest is w4/r0), UUID 47FE5308-55FD-4F1C-BD13-C23AED232326, small LPT model
>
> => OK
>
> Now, under u-boot, flashing only the ubi volume "rootfs":
>> fatload usb 0 0x20008000 /rootfs.ubifs
> 54218752 bytes read in 3259 ms (15.9 MiB/s)
>> ubi part ubi
> UBI: attaching mtd1 to ubi0
> UBI: physical eraseblock size: 131072 bytes (128 KiB)
> UBI: logical eraseblock size: 126976 bytes
> UBI: smallest flash I/O unit: 2048
> UBI: VID header offset: 2048 (aligned 2048)
> UBI: data offset: 4096
> UBI: attached mtd1 to ubi0
> UBI: MTD device name: "mtd=2"
> UBI: MTD device size: 245 MiB
> UBI: number of good PEBs: 1964
> UBI: number of bad PEBs: 0
> UBI: max. allowed volumes: 128
> UBI: wear-leveling threshold: 4096
> UBI: number of internal volumes: 1
> UBI: number of user volumes: 3
> UBI: available PEBs: 23
> UBI: total number of reserved PEBs: 1941
> UBI: number of PEBs reserved for bad PEB handling: 19
> UBI: max/mean erase counter: 2/0
>> ubi write 0x20008000 rootfs 33b5000
> 54218752 bytes written to volume rootfs
>
> Booting the same kernel:
> [ 0.812500] UBI: attaching mtd2 to ubi0
> [ 1.664062] UBI: scanning is finished
> [ 1.687500] UBI: attached mtd2 (name "UBI", size 245 MiB) to ubi0
> [ 1.687500] UBI: PEB size: 131072 bytes (128 KiB), LEB size: 126976 bytes
> [ 1.695312] UBI: min./max. I/O unit sizes: 2048/2048, sub-page size 2048
> [ 1.703125] UBI: VID header offset: 2048 (aligned 2048), data offset: 4096
> [ 1.710937] UBI: good PEBs: 1964, bad PEBs: 0, corrupted PEBs: 0
> [ 1.718750] UBI: user volume: 3, internal volumes: 1, max. volumes count: 128
> [ 1.718750] UBI: max/mean erase counter: 3/1, WL threshold: 4096, image sequence number: 891983656
> [ 1.726562] UBI: available PEBs: 2, total reserved PEBs: 1962, PEBs reserved for bad PEB handling: 40
> [ 1.734375] UBI: background thread "ubi_bgt0d" started, PID 354
> [ 1.750000] UBIFS: background thread "ubifs_bgt0_0" started, PID 356
> [ 1.789062] UBIFS: mounted UBI device 0, volume 0, name "rootfs"
> [ 1.796875] UBIFS: LEB size: 126976 bytes (124 KiB), min./max. I/O unit sizes: 2048 bytes/2048 bytes
> [ 1.804687] UBIFS: FS size: 63614976 bytes (60 MiB, 501 LEBs), journal size 8634368 bytes (8 MiB, 68 LEBs)
> [ 1.812500] UBIFS: reserved for root: 0 bytes (0 KiB)
> [ 1.812500] UBIFS: media format: w4/r0 (latest is w4/r0), UUID 47FE5308-55FD-4F1C-BD13-C23AED232326, small LPT model
>
> => all OK
>
> 2- With Fastmap compiled and ubi.fm_autoconvert=0
> - Flashing the UBI mtd partition under u-boot:
>> fatload usb 0 0x20008000 /userspace.ubi
>> nand device ubi
>> nand erase.part ubi
> NAND erase.part: device 0 offset 0xa00000, size 0xf580000
> OK
>> nand write.trimffs 0x20008000 ubi 35a0000
> NAND write: device 0 offset 0xa00000, size 0x35a0000
> 56229888 bytes written: OK
> Booting a FASTMAP kernel:
> [...]
> [ 0.812500] UBI: default fastmap pool size: 95
> [ 0.820312] UBI: default fastmap WL pool size: 25
> [ 0.820312] UBI: attaching mtd2 to ubi0
> [ 1.289062] UBI: scanning is finished
> [ 1.304687] UBI: attached mtd2 (name "UBI", size 245 MiB) to ubi0
> [ 1.312500] UBI: PEB size: 131072 bytes (128 KiB), LEB size: 126976 bytes
> [ 1.320312] UBI: min./max. I/O unit sizes: 2048/2048, sub-page size 2048
> [ 1.328125] UBI: VID header offset: 2048 (aligned 2048), data offset: 4096
> [ 1.328125] UBI: good PEBs: 1964, bad PEBs: 0, corrupted PEBs: 0
> [ 1.335937] UBI: user volume: 3, internal volumes: 1, max. volumes count: 128
> [ 1.343750] UBI: max/mean erase counter: 0/0, WL threshold: 4096, image sequence number: 891983656
> [ 1.351562] UBI: available PEBs: 0, total reserved PEBs: 1964, PEBs reserved for bad PEB handling: 40
> [ 1.359375] UBI: background thread "ubi_bgt0d" started, PID 355
> [ 1.453125] UBIFS: background thread "ubifs_bgt0_0" started, PID 357
> [ 1.515625] UBIFS: mounted UBI device 0, volume 0, name "rootfs"
> [ 1.515625] UBIFS: LEB size: 126976 bytes (124 KiB), min./max. I/O unit sizes: 2048 bytes/2048 bytes
> [ 1.523437] UBIFS: FS size: 63614976 bytes (60 MiB, 501 LEBs), journal size 8634368 bytes (8 MiB, 68 LEBs)
> [ 1.531250] UBIFS: reserved for root: 0 bytes (0 KiB)
> [ 1.539062] UBIFS: media format: w4/r0 (latest is w4/r0), UUID 47FE5308-55FD-4F1C-BD13-C23AED232326, small LPT model
> => OK
>
>
> Rebooting: :
> [ 0.812500] UBI: default fastmap pool size: 95
> [ 0.820312] UBI: default fastmap WL pool size: 25
> [ 0.820312] UBI: attaching mtd2 to ubi0
> [ 1.578125] UBI: scanning is finished
> [ 1.601562] UBI: attached mtd2 (name "UBI", size 245 MiB) to ubi0
> [ 1.609375] UBI: PEB size: 131072 bytes (128 KiB), LEB size: 126976 bytes
> [ 1.617187] UBI: min./max. I/O unit sizes: 2048/2048, sub-page size 2048
> [ 1.617187] UBI: VID header offset: 2048 (aligned 2048), data offset: 4096
> [ 1.625000] UBI: good PEBs: 1964, bad PEBs: 0, corrupted PEBs: 0
> [ 1.632812] UBI: user volume: 3, internal volumes: 1, max. volumes count: 128
> [ 1.640625] UBI: max/mean erase counter: 2/0, WL threshold: 4096, image sequence number: 891983656
> [ 1.648437] UBI: available PEBs: 0, total reserved PEBs: 1964, PEBs reserved for bad PEB handling: 40
> [ 1.656250] UBI: background thread "ubi_bgt0d" started, PID 355
>
> Still ok.
>
> Now, under u-boot, flashing only the ubi volume "rootfs":
>> fatload usb 0 0x20008000 /rootfs.ubifs
> 54218752 bytes read in 3259 ms (15.9 MiB/s)
>> ubi part ubi
> UBI: attaching mtd1 to ubi0
> UBI: physical eraseblock size: 131072 bytes (128 KiB)
> UBI: logical eraseblock size: 126976 bytes
> UBI: smallest flash I/O unit: 2048
> UBI: VID header offset: 2048 (aligned 2048)
> UBI: data offset: 4096
> UBI: attached mtd1 to ubi0
> UBI: MTD device name: "mtd=2"
> UBI: MTD device size: 245 MiB
> UBI: number of good PEBs: 1964
> UBI: number of bad PEBs: 0
> UBI: max. allowed volumes: 128
> UBI: wear-leveling threshold: 4096
> UBI: number of internal volumes: 1
> UBI: number of user volumes: 3
> UBI: available PEBs: 23
> UBI: total number of reserved PEBs: 1941
> UBI: number of PEBs reserved for bad PEB handling: 19
> UBI: max/mean erase counter: 2/0
>> ubi write 0x20008000 rootfs 33b5000
> 54218752 bytes written to volume rootfs
>
> Booting the same kernel:
> [ 0.804687] UBI: default fastmap pool size: 95
> [ 0.812500] UBI: default fastmap WL pool size: 25
> [ 0.812500] UBI: attaching mtd2 to ubi0
> [ 1.570312] UBI: scanning is finished
> [ 1.593750] UBI: attached mtd2 (name "UBI", size 245 MiB) to ubi0
> [ 1.601562] UBI: PEB size: 131072 bytes (128 KiB), LEB size: 126976 bytes
> [ 1.609375] UBI: min./max. I/O unit sizes: 2048/2048, sub-page size 2048
> [ 1.609375] UBI: VID header offset: 2048 (aligned 2048), data offset: 4096
> [ 1.617187] UBI: good PEBs: 1964, bad PEBs: 0, corrupted PEBs: 0
> [ 1.625000] UBI: user volume: 3, internal volumes: 1, max. volumes count: 128
> [ 1.632812] UBI: max/mean erase counter: 3/1, WL threshold: 4096, image sequence number: 891983656
> [ 1.640625] UBI: available PEBs: 0, total reserved PEBs: 1964, PEBs reserved for bad PEB handling: 40
> [ 1.648437] UBI: background thread "ubi_bgt0d" started, PID 355
> [ 1.664062] UBIFS: background thread "ubifs_bgt0_0" started, PID 357
> [ 1.703125] UBIFS: mounted UBI device 0, volume 0, name "rootfs"
> [ 1.710937] UBIFS: LEB size: 126976 bytes (124 KiB), min./max. I/O unit sizes: 2048 bytes/2048 bytes
> [ 1.718750] UBIFS: FS size: 63614976 bytes (60 MiB, 501 LEBs), journal size 8634368 bytes (8 MiB, 68 LEBs)
> [ 1.726562] UBIFS: reserved for root: 0 bytes (0 KiB)
> [ 1.734375] UBIFS: media format: w4/r0 (latest is w4/r0), UUID 47FE5308-55FD-4F1C-BD13-C23AED232326, small LPT model
> => All OK (I rebooted one or two times, no problem showing up)
>
> Now, booting with ubi.fm_autoconvert=1:
> [ 0.812500] UBI: default fastmap pool size: 95
> [ 0.820312] UBI: default fastmap WL pool size: 25
> [ 0.820312] UBI: attaching mtd2 to ubi0
> [ 1.578125] UBI: scanning is finished
> [ 1.601562] UBI: attached mtd2 (name "UBI", size 245 MiB) to ubi0
> [ 1.609375] UBI: PEB size: 131072 bytes (128 KiB), LEB size: 126976 bytes
> [ 1.609375] UBI: min./max. I/O unit sizes: 2048/2048, sub-page size 2048
> [ 1.617187] UBI: VID header offset: 2048 (aligned 2048), data offset: 4096
> [ 1.625000] UBI: good PEBs: 1964, bad PEBs: 0, corrupted PEBs: 0
> [ 1.632812] UBI: user volume: 3, internal volumes: 1, max. volumes count: 128
> [ 1.640625] UBI: max/mean erase counter: 3/1, WL threshold: 4096, image sequence number: 891983656
> [ 1.648437] UBI: available PEBs: 0, total reserved PEBs: 1964, PEBs reserved for bad PEB handling: 40
> [ 1.656250] UBI: background thread "ubi_bgt0d" started, PID 355
> [ 1.671875] UBIFS: background thread "ubifs_bgt0_0" started, PID 357
> [ 1.710937] UBIFS: mounted UBI device 0, volume 0, name "rootfs"
> [ 1.718750] UBIFS: LEB size: 126976 bytes (124 KiB), min./max. I/O unit sizes: 2048 bytes/2048 bytes
> [ 1.726562] UBIFS: FS size: 63614976 bytes (60 MiB, 501 LEBs), journal size 8634368 bytes (8 MiB, 68 LEBs)
> [ 1.734375] UBIFS: reserved for root: 0 bytes (0 KiB)
> [ 1.742187] UBIFS: media format: w4/r0 (latest is w4/r0), UUID 47FE5308-55FD-4F1C-BD13-C23AED232326, small LPT model
> => Still OK
> Rebooting again with ubi.fm_autoconvert=1:
> [ 0.812500] UBI: default fastmap pool size: 95
> [ 0.820312] UBI: default fastmap WL pool size: 25
> [ 0.820312] UBI: attaching mtd2 to ubi0
> [ 0.851562] UBI error: ubi_scan_fastmap: Attach by fastmap failed, doing a full scan!
This is not the top most error. Do you have to full log?
Would be nice to know why fastmap has fallen back to a full scan.
> [ 1.593750] UBI: scanning is finished
> [ 1.601562] UBI assert failed in ubi_wl_init at 1967 (pid 1)
> [ 1.609375] CPU: 0 PID: 1 Comm: swapper Not tainted 3.11.1 #5
> [ 1.617187] [<c0012e20>] (unwind_backtrace+0x0/0xe0) from [<c0010bb8>] (show_stack+0x10/0x14)
> [ 1.625000] [<c0010bb8>] (show_stack+0x10/0x14) from [<c01a0704>] (ubi_wl_init+0x3d0/0x4b8)
> [ 1.632812] [<c01a0704>] (ubi_wl_init+0x3d0/0x4b8) from [<c01a2cd4>] (ubi_attach+0x270/0x34c)
> [ 1.640625] [<c01a2cd4>] (ubi_attach+0x270/0x34c) from [<c0197678>] (ubi_attach_mtd_dev+0x2b8/0x86c)
> [ 1.648437] [<c0197678>] (ubi_attach_mtd_dev+0x2b8/0x86c) from [<c0346630>] (ubi_init+0x1d8/0x29c)
> [ 1.656250] [<c0346630>] (ubi_init+0x1d8/0x29c) from [<c0008810>] (do_one_initcall+0x94/0x144)
> [ 1.664062] [<c0008810>] (do_one_initcall+0x94/0x144) from [<c0335a9c>] (kernel_init_freeable+0xe8/0x1ac)
> [ 1.671875] [<c0335a9c>] (kernel_init_freeable+0xe8/0x1ac) from [<c0251500>] (kernel_init+0x8/0xe4)
> [ 1.679687] [<c0251500>] (kernel_init+0x8/0xe4) from [<c000e590>] (ret_from_fork+0x14/0x24)
> [ 1.695312] UBI: attached mtd2 (name "UBI", size 245 MiB) to ubi0
> [ 1.703125] UBI: PEB size: 131072 bytes (128 KiB), LEB size: 126976 bytes
> [ 1.703125] UBI: min./max. I/O unit sizes: 2048/2048, sub-page size 2048
> [ 1.710937] UBI: VID header offset: 2048 (aligned 2048), data offset: 4096
> [ 1.718750] UBI: good PEBs: 1964, bad PEBs: 0, corrupted PEBs: 0
> [ 1.726562] UBI: user volume: 3, internal volumes: 1, max. volumes count: 128
> [ 1.726562] UBI: max/mean erase counter: 3/1, WL threshold: 4096, image sequence number: 891983656
> [ 1.734375] UBI: available PEBs: 0, total reserved PEBs: 1964, PEBs reserved for bad PEB handling: 40
> [ 1.742187] UBI: background thread "ubi_bgt0d" started, PID 355
> [ 1.757812] UBIFS: background thread "ubifs_bgt0_0" started, PID 357
> [ 1.796875] UBIFS: mounted UBI device 0, volume 0, name "rootfs"
> [ 1.804687] UBIFS: LEB size: 126976 bytes (124 KiB), min./max. I/O unit sizes: 2048 bytes/2048 bytes
> [ 1.812500] UBIFS: FS size: 63614976 bytes (60 MiB, 501 LEBs), journal size 8634368 bytes (8 MiB, 68 LEBs)
> [ 1.820312] UBIFS: reserved for root: 0 bytes (0 KiB)
> [ 1.820312] UBIFS: media format: w4/r0 (latest is w4/r0), UUID 47FE5308-55FD-4F1C-BD13-C23AED232326, small LPT model
> [ 1.828125] VFS: Mounted root (ubifs filesystem) on device 0:11.
> [ 1.835937] devtmpfs: mounted
> [ 1.835937] Freeing unused kernel memory: 112K (c0335000 - c0351000)
> [ 2.187500] UBI error: ubi_update_fastmap: could not find any anchor PEB
> [ 2.195312] UBI warning: ubi_update_fastmap: Unable to write new fastmap, err=-28
> => If I reboot again, I still have those error messages.
>
>
> 3- With Fastmap compiled and ubi.fm_autoconvert=1
> - Flashing the UBI mtd partition under u-boot:
>> fatload usb 0 0x20008000 /userspace.ubi
>> nand device ubi
>> nand erase.part ubi
> NAND erase.part: device 0 offset 0xa00000, size 0xf580000
> OK
>> nand write.trimffs 0x20008000 ubi 35a0000
> NAND write: device 0 offset 0xa00000, size 0x35a0000
> 56229888 bytes written: OK
> Booting a FASTMAP kernel with ubi.fm_autoconvert=1:
> [...]
> [ 0.812500] UBI: default fastmap pool size: 95
> [ 0.820312] UBI: default fastmap WL pool size: 25
> [ 0.820312] UBI: attaching mtd2 to ubi0
> [ 1.289062] UBI: scanning is finished
> [ 1.304687] UBI: attached mtd2 (name "UBI", size 245 MiB) to ubi0
> [ 1.312500] UBI: PEB size: 131072 bytes (128 KiB), LEB size: 126976 bytes
> [ 1.320312] UBI: min./max. I/O unit sizes: 2048/2048, sub-page size 2048
> [ 1.328125] UBI: VID header offset: 2048 (aligned 2048), data offset: 4096
> [ 1.328125] UBI: good PEBs: 1964, bad PEBs: 0, corrupted PEBs: 0
> [ 1.335937] UBI: user volume: 3, internal volumes: 1, max. volumes count: 128
> [ 1.343750] UBI: max/mean erase counter: 0/0, WL threshold: 4096, image sequence number: 891983656
> [ 1.351562] UBI: available PEBs: 0, total reserved PEBs: 1964, PEBs reserved for bad PEB handling: 40
> [ 1.359375] UBI: background thread "ubi_bgt0d" started, PID 355
> [ 1.437500] UBI error: ubi_update_fastmap: could not find any anchor PEB
> [ 1.445312] UBI warning: ubi_update_fastmap: Unable to write new fastmap, err=-28
> =>OK
>
> Rebooting 2 times to let FASTMAP show its power:
> [ 0.812500] UBI: default fastmap pool size: 95
> [ 0.820312] UBI: default fastmap WL pool size: 25
> [ 0.820312] UBI: attaching mtd2 to ubi0
> [ 0.929687] UBI: attached by fastmap
> [ 0.937500] UBI: fastmap pool size: 95
> [ 0.937500] UBI: fastmap WL pool size: 25
> [ 0.960937] UBI: attached mtd2 (name "UBI", size 245 MiB) to ubi0
> GREAT !
>
> Now, under u-boot, flashing only the ubi volume "rootfs":
>> fatload usb 0 0x20008000 /rootfs.ubifs
> 54218752 bytes read in 3259 ms (15.9 MiB/s)
>> ubi part ubi
> UBI: attaching mtd1 to ubi0
> UBI: physical eraseblock size: 131072 bytes (128 KiB)
> UBI: logical eraseblock size: 126976 bytes
> UBI: smallest flash I/O unit: 2048
> UBI: VID header offset: 2048 (aligned 2048)
> UBI: data offset: 4096
> UBI: "delete" compatible internal volume 2147479552:0 found, remove it
> UBI: attached mtd1 to ubi0
> UBI: MTD device name: "mtd=2"
> UBI: MTD device size: 245 MiB
> UBI: number of good PEBs: 1964
> UBI: number of bad PEBs: 0
> UBI: max. allowed volumes: 128
> UBI: wear-leveling threshold: 4096
> UBI: number of internal volumes: 1
> UBI: number of user volumes: 3
> UBI: available PEBs: 23
> UBI: total number of reserved PEBs: 1941
> UBI: number of PEBs reserved for bad PEB handling: 19
> UBI: max/mean erase counter: 2/0
>> ubi write 0x20008000 rootfs 33b5000
> 54218752 bytes written to volume rootfs
>
> =>FASTMAP internal volume has been erased, which is the expected behaviour.
>
> Booting the same kernel, still with ubi.fm_autoconvert=1:
> [...]
> [ 0.812500] UBI: default fastmap pool size: 95
> [ 0.820312] UBI: default fastmap WL pool size: 25
> [ 0.820312] UBI: attaching mtd2 to ubi0
> [ 1.585937] UBI: scanning is finished
> [ 1.601562] UBI: attached mtd2 (name "UBI", size 245 MiB) to ubi0
> [ 1.609375] UBI: PEB size: 131072 bytes (128 KiB), LEB size: 126976 bytes
> [ 1.617187] UBI: min./max. I/O unit sizes: 2048/2048, sub-page size 2048
> [ 1.625000] UBI: VID header offset: 2048 (aligned 2048), data offset: 4096
> [ 1.625000] UBI: good PEBs: 1964, bad PEBs: 0, corrupted PEBs: 0
> [ 1.632812] UBI: user volume: 3, internal volumes: 1, max. volumes count: 128
> [ 1.640625] UBI: max/mean erase counter: 4/1, WL threshold: 4096, image sequence number: 891983656
> [ 1.648437] UBI: available PEBs: 0, total reserved PEBs: 1964, PEBs reserved for bad PEB handling: 40
> [ 1.656250] UBI: background thread "ubi_bgt0d" started, PID 355
> [ 1.703125] UBIFS: background thread "ubifs_bgt0_0" started, PID 357
> [ 1.734375] UBIFS: mounted UBI device 0, volume 0, name "rootfs"
> [ 1.742187] UBIFS: LEB size: 126976 bytes (124 KiB), min./max. I/O unit sizes: 2048 bytes/2048 bytes
> [ 1.750000] UBIFS: FS size: 63614976 bytes (60 MiB, 501 LEBs), journal size 8634368 bytes (8 MiB, 68 LEBs)
> [ 1.757812] UBIFS: reserved for root: 0 bytes (0 KiB)
> [ 1.765625] UBIFS: media format: w4/r0 (latest is w4/r0), UUID 47FE5308-55FD-4F1C-BD13-C23AED232326, small LPT model
> =>OK this time, let's reboot:
>
> [ 0.812500] UBI: default fastmap pool size: 95
> [ 0.820312] UBI: default fastmap WL pool size: 25
> [ 0.820312] UBI: attaching mtd2 to ubi0
> [ 0.914062] UBI error: scan_pool: bad image seq: 0x0, expected: 0x352a9728
> [ 0.921875] ------------[ cut here ]------------
> [ 0.929687] WARNING: CPU: 0 PID: 1 at drivers/mtd/ubi/fastmap.c:829 ubi_attach_fastmap+0xd38/0xda0()
This bug got most likely fixed by "UBI: Fix PEB leak in wear_leveling_worker()".
> [ 0.937500] Modules linked in:
> [ 0.937500] CPU: 0 PID: 1 Comm: swapper Not tainted 3.11.1 #5
> [ 0.945312] [<c0012e20>] (unwind_backtrace+0x0/0xe0) from [<c0010bb8>] (show_stack+0x10/0x14)
> [ 0.953125] [<c0010bb8>] (show_stack+0x10/0x14) from [<c001ab2c>] (warn_slowpath_common+0x60/0x80)
> [ 0.960937] [<c001ab2c>] (warn_slowpath_common+0x60/0x80) from [<c001ab64>] (warn_slowpath_null+0x18/0x1c)
> [ 0.968750] [<c001ab64>] (warn_slowpath_null+0x18/0x1c) from [<c01a5c8c>] (ubi_attach_fastmap+0xd38/0xda0)
> [ 0.976562] [<c01a5c8c>] (ubi_attach_fastmap+0xd38/0xda0) from [<c01a62d4>] (ubi_scan_fastmap+0x5b4/0x7b8)
> [ 0.984375] [<c01a62d4>] (ubi_scan_fastmap+0x5b4/0x7b8) from [<c01a2c2c>] (ubi_attach+0x1c8/0x34c)
> [ 0.992187] [<c01a2c2c>] (ubi_attach+0x1c8/0x34c) from [<c0197678>] (ubi_attach_mtd_dev+0x2b8/0x86c)
> [ 1.000000] [<c0197678>] (ubi_attach_mtd_dev+0x2b8/0x86c) from [<c0346630>] (ubi_init+0x1d8/0x29c)
> [ 1.007812] [<c0346630>] (ubi_init+0x1d8/0x29c) from [<c0008810>] (do_one_initcall+0x94/0x144)
> [ 1.015625] [<c0008810>] (do_one_initcall+0x94/0x144) from [<c0335a9c>] (kernel_init_freeable+0xe8/0x1ac)
> [ 1.023437] [<c0335a9c>] (kernel_init_freeable+0xe8/0x1ac) from [<c0251500>] (kernel_init+0x8/0xe4)
> [ 1.031250] [<c0251500>] (kernel_init+0x8/0xe4) from [<c000e590>] (ret_from_fork+0x14/0x24)
> [ 1.039062] ---[ end trace 313a7957427257d8 ]---
> [ 1.039062] UBI error: ubi_scan_fastmap: Attach by fastmap failed, doing a full scan!
> [ 1.781250] UBI: scanning is finished
> [ 1.796875] UBI assert failed in ubi_wl_init at 1967 (pid 1)
> [ 1.796875] CPU: 0 PID: 1 Comm: swapper Tainted: G W 3.11.1 #5
> [ 1.804687] [<c0012e20>] (unwind_backtrace+0x0/0xe0) from [<c0010bb8>] (show_stack+0x10/0x14)
> [ 1.812500] [<c0010bb8>] (show_stack+0x10/0x14) from [<c01a0704>] (ubi_wl_init+0x3d0/0x4b8)
> [ 1.820312] [<c01a0704>] (ubi_wl_init+0x3d0/0x4b8) from [<c01a2cd4>] (ubi_attach+0x270/0x34c)
> [ 1.828125] [<c01a2cd4>] (ubi_attach+0x270/0x34c) from [<c0197678>] (ubi_attach_mtd_dev+0x2b8/0x86c)
> [ 1.835937] [<c0197678>] (ubi_attach_mtd_dev+0x2b8/0x86c) from [<c0346630>] (ubi_init+0x1d8/0x29c)
> [ 1.843750] [<c0346630>] (ubi_init+0x1d8/0x29c) from [<c0008810>] (do_one_initcall+0x94/0x144)
> [ 1.851562] [<c0008810>] (do_one_initcall+0x94/0x144) from [<c0335a9c>] (kernel_init_freeable+0xe8/0x1ac)
> [ 1.859375] [<c0335a9c>] (kernel_init_freeable+0xe8/0x1ac) from [<c0251500>] (kernel_init+0x8/0xe4)
> [ 1.867187] [<c0251500>] (kernel_init+0x8/0xe4) from [<c000e590>] (ret_from_fork+0x14/0x24)
> [ 1.882812] UBI: attached mtd2 (name "UBI", size 245 MiB) to ubi0
> [ 1.890625] UBI: PEB size: 131072 bytes (128 KiB), LEB size: 126976 bytes
> [ 1.898437] UBI: min./max. I/O unit sizes: 2048/2048, sub-page size 2048
> [ 1.898437] UBI: VID header offset: 2048 (aligned 2048), data offset: 4096
> [ 1.906250] UBI: good PEBs: 1964, bad PEBs: 0, corrupted PEBs: 0
> [ 1.914062] UBI: user volume: 3, internal volumes: 1, max. volumes count: 128
> [ 1.921875] UBI: max/mean erase counter: 4/1, WL threshold: 4096, image sequence number: 891983656
> [ 1.929687] UBI: available PEBs: 0, total reserved PEBs: 1964, PEBs reserved for bad PEB handling: 40
> [ 1.937500] UBI: background thread "ubi_bgt0d" started, PID 355
> [ 1.953125] UBIFS: background thread "ubifs_bgt0_0" started, PID 357
> [ 1.992187] UBIFS: mounted UBI device 0, volume 0, name "rootfs"
> [ 2.000000] UBIFS: LEB size: 126976 bytes (124 KiB), min./max. I/O unit sizes: 2048 bytes/2048 bytes
> [ 2.007812] UBIFS: FS size: 63614976 bytes (60 MiB, 501 LEBs), journal size 8634368 bytes (8 MiB, 68 LEBs)
> [ 2.015625] UBIFS: reserved for root: 0 bytes (0 KiB)
> [ 2.023437] UBIFS: media format: w4/r0 (latest is w4/r0), UUID 47FE5308-55FD-4F1C-BD13-C23AED232326, small LPT model
> [ 2.031250] VFS: Mounted root (ubifs filesystem) on device 0:11.
> [ 2.039062] devtmpfs: mounted
> [ 2.046875] Freeing unused kernel memory: 112K (c0335000 - c0351000)
> [ 2.390625] UBI error: ubi_update_fastmap: could not find any anchor PEB
> [ 2.398437] UBI warning: ubi_update_fastmap: Unable to write new fastmap, err=-28
Thanks,
//richard
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