For subject completeness . . . You could even use dd to stuff the bootloaders into the MBR, and then tar to extract over a rootfs. But, this is slightly more complex. Personally I tend to like the less complex options. dd also has the advantage of a 1:1 bit copy where tar . . . yeah not so sure about that.
On Wed, Jul 27, 2016 at 3:05 AM, Peter Bigot <pabi...@gmail.com> wrote: > Thanks; that's the approach I'm going with. > > On Tue, Jul 26, 2016 at 11:30 PM, William Hermans <yyrk...@gmail.com> > wrote: > >> No idea what the problem might be, but I'd probably try dd instead. >> >> On Mon, Jul 25, 2016 at 10:43 AM, pabigot <pabi...@gmail.com> wrote: >> >>> Using a script derived from init-eMMC-flasher-v3.sh to rsync from a >>> loopback-mounted file system to a newly created ext4 file system on the >>> eMMC I periodically (~ 5% of attempts) get the failures below. This has >>> been replicated with kernels 4.1.16-ti-rt-r44 and 4.4.9-ti-r25 (both from >>> pre-build console images), and on multiple BeagleBone Black revision C >>> devices. The effect is that the resulting partition has nulls in some >>> files where there should be data. >>> >>> Note that this is writing to the eMMC, not to an SD card, and the script >>> process is running as init. (The source image is sometimes on an SD card, >>> and sometimes on an NFS-mounted root partition.) >>> >>> The behavior and context is very much like the following topic but the >>> kernel is much more recent and the device is being fed by a 5VDC 10A supply >>> so should not be due to voltage sags. >>> >>> https://groups.google.com/d/topic/beagleboard/C__ixv3bBBI/discussion >>> >>> Can anybody provide a clue as to why this might happen, and if something >>> can be done to prevent it? >>> >>> Thanks. >>> >>> Peter >>> >>> Captured diagnostics over serial console running 4.4.9-ti-r25: >>> >>> ----------------------------- >>> Copying: /tmp/mnt/root -> /dev/mmcblk1p1 >>> [ 33.839562] EXT4-fs (mmcblk1p1): mounted filesystem with ordered data >>> mode. Opts: (null) >>> rsync: /tmp/mnt/root -> /tmp/rootfs/ >>> [ 142.267382] mmcqd/1: page allocation failure: order:2, mode:0x208c020 >>> [ 142.273958] CPU: 0 PID: 77 Comm: mmcqd/1 Not tainted 4.4.9-ti-r25 #1 >>> [ 142.280338] Hardware name: Generic AM33XX (Flattened Device Tree) >>> [ 142.286494] [<c0015b61>] (unwind_backtrace) from [<c00123f5>] >>> (show_stack+0x11/0x14) >>> [ 142.294286] [<c00123f5>] (show_stack) from [<c03c9023>] >>> (dump_stack+0x73/0x80) >>> [ 142.301555] [<c03c9023>] (dump_stack) from [<c00f79d1>] >>> (warn_alloc_failed+0xb5/0xf0) >>> [ 142.309427] [<c00f79d1>] (warn_alloc_failed) from [<c00f9fed>] >>> (__alloc_pages_nodemask+0x5ed/0x748) >>> [ 142.318516] [<c00f9fed>] (__alloc_pages_nodemask) from [<c00fa2a9>] >>> (alloc_kmem_pages+0x15/0x78) >>> [ 142.327349] [<c00fa2a9>] (alloc_kmem_pages) from [<c010d64f>] >>> (kmalloc_order+0x13/0x20) >>> [ 142.335392] [<c010d64f>] (kmalloc_order) from [<c010d675>] >>> (kmalloc_order_trace+0x19/0x94) >>> [ 142.343699] [<c010d675>] (kmalloc_order_trace) from [<c041a9d3>] >>> (edma_prep_slave_sg+0x7b/0x258) >>> [ 142.352528] [<c041a9d3>] (edma_prep_slave_sg) from [<c05b6417>] >>> (omap_hsmmc_request+0x333/0x3ec) >>> [ 142.361359] [<c05b6417>] (omap_hsmmc_request) from [<c05a428b>] >>> (mmc_start_request+0xcb/0x1b0) >>> [ 142.370013] [<c05a428b>] (mmc_start_request) from [<c05a4f93>] >>> (mmc_start_req+0x203/0x2d4) >>> [ 142.378323] [<c05a4f93>] (mmc_start_req) from [<c05b09c9>] >>> (mmc_blk_issue_rw_rq+0x99/0x7f8) >>> [ 142.386715] [<c05b09c9>] (mmc_blk_issue_rw_rq) from [<c05b125f>] >>> (mmc_blk_issue_rq+0x137/0x36c) >>> [ 142.395455] [<c05b125f>] (mmc_blk_issue_rq) from [<c05b2723>] >>> (mmc_queue_thread+0x9f/0x148) >>> [ 142.403850] [<c05b2723>] (mmc_queue_thread) from [<c0048383>] >>> (kthread+0xaf/0xc4) >>> [ 142.411375] [<c0048383>] (kthread) from [<c000ed15>] >>> (ret_from_fork+0x11/0x1c) >>> [ 142.418678] Mem-Info: >>> [ 142.420972] active_anon:6521 inactive_anon:0 isolated_anon:0 >>> [ 142.420972] active_file:13169 inactive_file:90132 isolated_file:0 >>> [ 142.420972] unevictable:0 dirty:4997 writeback:5105 unstable:0 >>> [ 142.420972] slab_reclaimable:12884 slab_unreclaimable:1371 >>> [ 142.420972] mapped:687 shmem:0 pagetables:102 bounce:0 >>> [ 142.420972] free:1086 free_pcp:51 free_cma:0 >>> [ 142.454003] Normal free:4344kB min:2836kB low:3544kB high:4252kB >>> active_anon:26084kB inactive_anon:0kB active_file:52676kB >>> inactive_file:360528kB unevictable:0kB isolated(anon):0kB >>> isolated(file):0kB present:522240kB managed:503900kB mlocked:0kB >>> dirty:19988kB writeback:20420kB mapped:2748kB shmem:0kB >>> slab_reclaimable:51536kB slab_unreclaimable:5484kB kernel_stack:584kB >>> pagetables:408kB unstable:0kB bounce:0kB free_pcp:204kB local_pcp:204kB >>> free_cma:0kB writeback_tmp:0kB pages_scanned:0 all_unreclaimable? no >>> [ 142.499136] lowmem_reserve[]: 0 0 0 >>> [ 142.502684] Normal: 86*4kB (UME) 497*8kB (UE) 0*16kB 0*32kB 0*64kB >>> 0*128kB 0*256kB 0*512kB 0*1024kB 0*2048kB 0*4096kB 0*8192kB = 4320kB >>> [ 142.515179] 103305 total pagecache pages >>> [ 142.519139] 0 pages in swap cache >>> [ 142.522480] Swap cache stats: add 0, delete 0, find 0/0 >>> [ 142.527738] Free swap = 0kB >>> [ 142.530641] Total swap = 0kB >>> [ 142.533541] 130560 pages RAM >>> [ 142.536429] 0 pages HighMem/MovableOnly >>> [ 142.540299] 4585 pages reserved >>> [ 142.543464] 6144 pages cma reserved >>> [ 142.546989] edma 49000000.edma: edma_prep_slave_sg: Failed to >>> allocate a descriptor >>> [ 142.554696] omap_hsmmc 481d8000.mmc: prep_slave_sg() failed >>> [ 142.560307] omap_hsmmc 481d8000.mmc: MMC start dma failure >>> [ 142.711393] mmcblk1: unknown error -1 sending read/write command, >>> card status 0x900 >>> [ 142.719459] blk_update_request: I/O error, dev mmcblk1, sector 1007160 >>> [ 142.726072] EXT4-fs warning (device mmcblk1p1): ext4_end_bio:329: I/O >>> error -5 writing to inode 16993 (offset 0 size 4096 starting block 125896) >>> [ 142.739111] Buffer I/O error on device mmcblk1p1, logical block 125639 >>> [ 142.745755] blk_update_request: I/O error, dev mmcblk1, sector 1007168 >>> [ 142.752358] blk_update_request: I/O error, dev mmcblk1, sector 1007176 >>> [ 142.758955] blk_update_request: I/O error, dev mmcblk1, sector 1007184 >>> [ 142.765550] blk_update_request: I/O error, dev mmcblk1, sector 1007192 >>> [ 142.772145] blk_update_request: I/O error, dev mmcblk1, sector 1007200 >>> [ 142.778740] blk_update_request: I/O error, dev mmcblk1, sector 1007208 >>> [ 142.785334] blk_update_request: I/O error, dev mmcblk1, sector 1007216 >>> [ 142.791929] blk_update_request: I/O error, dev mmcblk1, sector 1007224 >>> [ 142.798502] EXT4-fs warning (device mmcblk1p1): ext4_end_bio:329: I/O >>> error -5 writing to inode 16991 (offset 0 size 32768 starting block 125904) >>> [ 142.811629] Buffer I/O error on device mmcblk1p1, logical block 125640 >>> [ 142.818215] Buffer I/O error on device mmcblk1p1, logical block 125641 >>> [ 142.824790] Buffer I/O error on device mmcblk1p1, logical block 125642 >>> [ 142.831362] Buffer I/O error on device mmcblk1p1, logical block 125643 >>> [ 142.837934] Buffer I/O error on device mmcblk1p1, logical block 125644 >>> [ 142.844506] Buffer I/O error on device mmcblk1p1, logical block 125645 >>> [ 142.851077] Buffer I/O error on device mmcblk1p1, logical block 125646 >>> [ 142.857650] Buffer I/O error on device mmcblk1p1, logical block 125647 >>> [ 142.864254] blk_update_request: I/O error, dev mmcblk1, sector 1007232 >>> [ 142.870902] EXT4-fs warning (device mmcblk1p1): ext4_end_bio:329: I/O >>> error -5 writing to inode 16992 (offset 0 size 16384 starting block 125908) >>> [ 142.884038] Buffer I/O error on device mmcblk1p1, logical block 125648 >>> [ 142.891137] EXT4-fs warning (device mmcblk1p1): ext4_end_bio:329: I/O >>> error -5 writing to inode 16994 (offset 0 size 81920 starting block 125928) >>> [ 142.904526] EXT4-fs warning (device mmcblk1p1): ext4_end_bio:329: I/O >>> error -5 writing to inode 16995 (offset 0 size 40960 starting block 125938) >>> [ 142.917813] EXT4-fs warning (device mmcblk1p1): ext4_end_bio:329: I/O >>> error -5 writing to inode 16996 (offset 0 size 28672 starting block 125945) >>> [ 142.931049] EXT4-fs warning (device mmcblk1p1): ext4_end_bio:329: I/O >>> error -5 writing to inode 16997 (offset 0 size 20480 starting block 125950) >>> [ 142.944969] EXT4-fs warning (device mmcblk1p1): ext4_end_bio:329: I/O >>> error -5 writing to inode 16998 (offset 0 size 184320 starting block 125995) >>> [ 142.958590] EXT4-fs warning (device mmcblk1p1): ext4_end_bio:329: I/O >>> error -5 writing to inode 16999 (offset 0 size 86016 starting block 126016) >>> [ 142.972043] EXT4-fs warning (device mmcblk1p1): ext4_end_bio:329: I/O >>> error -5 writing to inode 17000 (offset 0 size 86016 starting block 126037) >>> >>> -- >>> For more options, visit http://beagleboard.org/discuss >>> --- >>> You received this message because you are subscribed to 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