problems with RFS filesystem and mkdir
Matthew J Fletcher
amimjf at gmail.com
Tue Mar 19 21:21:50 UTC 2013
Alan,
Thanks very much for running this test, its given me quite a bit of
confidence.
Did you have to memset the address space to 0xff before you could
register/format the device ?, I found I had to do that to not get an error
code.
I suppose the memset would rapidly throw up problems if I had addresses
wrong. I can't think what the issue might be. I will try a mallocd area
like your example though to see if I get a good result.
On 19 Mar 2013 21:05, "Cudmore, Alan P. (GSFC-5820)" <
alan.p.cudmore at nasa.gov> wrote:
> I took your code below and created an example that would build and run on
> my 4.10.2 setup. I ran this on the sparc-sis simulator, and it seems to
> work fine.
>
> Are you sure you have valid memory for the nvramdisk device?
>
> We rely on RFS on 4.10.2 and are giving a pretty good stress test right
> now.
>
> Alan
>
> ------------------------------
>
> #include <errno.h>
> #include <stdio.h>
> #include <stdlib.h>
> #include <sys/stat.h>
> #include <fcntl.h>
>
> #include <rtems.h>
> #include <rtems/bdbuf.h>
> #include <rtems/blkdev.h>
> #include <rtems/diskdevs.h>
> #include <rtems/error.h>
> #include <rtems/flashdisk.h>
> #include <rtems/fsmount.h>
> #include <rtems/rtems-rfs.h>
> #include <rtems/rtems-rfs-format.h>
> #include <rtems/nvdisk-sram.h>
>
> uint32_t rtems_nvdisk_configuration_size =1;
> const char* sram_driver = "/dev/nvda"; // RTEMS_NVDISK_DEVICE_BASE_NAME,
> 1st device
> const char* sram_path = "/sram";
>
>
> /*
> * Let the IO system allocation the next available major number.
> */
> #define RTEMS_DRIVER_AUTO_MAJOR (0)
>
> /*
> * The SRAM Device setup
> */
> rtems_nvdisk_device_desc rtems_sram_device_descriptor[] =
> {
> {
> flags: 0,
> base: 0,
> size: 256 * 1024, // 256K (Adjust when ROM.ld, _IMFS_DiskSize
> is changed)
> nv_ops: &rtems_nvdisk_sram_handlers
> }
> };
>
> const rtems_nvdisk_config rtems_nvdisk_configuration[] =
> {
> {
> block_size: 512,
> device_count: 1,
> devices: &rtems_sram_device_descriptor[0],
> flags: 0,
> info_level: 0
> }
> };
>
> /**
> * Create the SRAM Disk Driver entry.
> */
> rtems_driver_address_table rtems_sram_ops = {
> initialization_entry: rtems_nvdisk_initialize,
> open_entry: rtems_blkdev_generic_open,
> close_entry: rtems_blkdev_generic_close,
> read_entry: rtems_blkdev_generic_read,
> write_entry: rtems_blkdev_generic_write,
> control_entry: rtems_blkdev_generic_ioctl
> };
>
>
> void setup_sram_disk (int cold_boot)
> {
> rtems_device_major_number major;
> rtems_status_code sc;
>
> // settings
> rtems_sram_device_descriptor[0].base = (uint32_t *) malloc (256*1024);
>
> if (cold_boot)
> {
> memset(rtems_sram_device_descriptor[0].base, 0xff,
> rtems_sram_device_descriptor[0].size );
> }
>
> /*
> * Register the NV Disk driver.
> */
> sc = rtems_io_register_driver (RTEMS_DRIVER_AUTO_MAJOR,
> &rtems_sram_ops, &major);
> if ( sc < 0 )
> {
> printf("RTEMS Register IO driver failed\n");
> }
> else
> {
> printf("RTEMS register IO driver OK\n");
> }
> }
>
>
> /*
> *
> * RFS on SRAM
> *
> */
>
> void mount_rfs_on_sram(int cold_boot)
> {
> rtems_rfs_format_config config;
> rtems_status_code rc;
>
> setup_sram_disk (cold_boot);
>
> // zero is a good set of defaults
> memset (&config, 0, sizeof (rtems_rfs_format_config));
>
> if (rtems_rfs_format (sram_driver, &config) < 0)
> {
> printf("error: format of %s failed: %s\n", sram_driver, strerror
> (errno));
> }
> else
> {
> printf("RTEMS RFS format OK\n");
> }
>
> if (mount_and_make_target_path(
> sram_driver,
> sram_path,
> RTEMS_FILESYSTEM_TYPE_RFS,
> RTEMS_FILESYSTEM_READ_WRITE,
> NULL
> ) != 0)
> {
> printf("error: mount of %s to %s failed: %s\n", sram_driver,
> sram_path, strerror (errno));
> }
> else
> {
> printf("mount and make target path OK\n");
> }
>
>
> rc = rtems_mkdir("sram/DB", S_IRWXU | S_IRGRP | S_IXGRP | S_IROTH |
> S_IXOTH);
> if ( rc < 0 )
> {
> printf("rtems_mkdir failed\n");
> }
> else
> {
> printf("mkdir sdram/DB OK\n");
> }
> }
>
> rtems_task Init(
> rtems_task_argument ignored
> )
> {
> printf( "\n\n*** Starting NVRAM Disk Test ***\n" );
> mount_rfs_on_sram(1);
> printf( "*** END OF TEST ***\n" );
> exit( 0 );
> }
>
> #define CONFIGURE_EXTRA_TASK_STACKS (CONFIGURE_MAXIMUM_TASKS *
> RTEMS_MINIMUM_STACK_SIZE)
>
> #define CONFIGURE_MAXIMUM_DRIVERS 6
> /* NOTICE: the clock driver is explicitly disabled */
> #define CONFIGURE_APPLICATION_DOES_NOT_NEED_CLOCK_DRIVER
> #define CONFIGURE_APPLICATION_NEEDS_CONSOLE_DRIVER
> #define CONFIGURE_DISABLE_CLASSIC_API_NOTEPADS
> #define CONFIGURE_MAXIMUM_TASKS 40 // TX MAX_THREAD
> #define CONFIGURE_MAXIMUM_TIMERS 40 // TX MAX_TIMER
> #define CONFIGURE_MAXIMUM_SEMAPHORES 40 // TX MAX_MUTEX
> #define CONFIGURE_MAXIMUM_MESSAGE_QUEUES 40 // TX MAX_MSG_QUEUE
> #define CONFIGURE_MAXIMUM_PARTITIONS 5
> #define CONFIGURE_MAXIMUM_REGIONS 5
> #define CONFIGURE_MAXIMUM_PORTS 0
> #define CONFIGURE_MAXIMUM_PERIODS 0
> #define CONFIGURE_MAXIMUM_BARRIERS 0
>
> #define CONFIGURE_MICROSECONDS_PER_TICK 10000 /* 10 milliseconds */
> #define CONFIGURE_TICKS_PER_TIMESLICE 50 /* 50 milliseconds */
>
> #define CONFIGURE_APPLICATION_NEEDS_LIBBLOCK
> #define CONFIGURE_BDBUF_MAX_READ_AHEAD_BLOCKS 2
> #define CONFIGURE_BDBUF_MAX_WRITE_BLOCKS 8
> #define CONFIGURE_SWAPOUT_TASK_PRIORITY 15
> #define CONFIGURE_USE_IMFS_AS_BASE_FILESYSTEM
> #define CONFIGURE_FILESYSTEM_RFS
> #define CONFIGURE_LIBIO_MAXIMUM_FILE_DESCRIPTORS 10
>
> #define CONFIGURE_RTEMS_INIT_TASKS_TABLE
> #define CONFIGURE_INIT
> #include <rtems/confdefs.h>
>
> -------------------------------
>
>
>
> On Mar 18, 2013, at 2:35 PM, Matthew J Fletcher <amimjf at gmail.com> wrote:
>
> Hi,
>
>
> Alas the mkdir() is the first filesystem operation i am doing. I am not
> sure if i can send attachments to the list so i've cut and pasted the
> relivant functions below. I guess the following would run on any BSP, its
> just a 256k block of sram. If there is a BSP with enough memory the base
> pointer for the filesystem could just be a big malloc().
>
> ------------------- snip -------------------------
>
>
> #define CONFIGURE_IDLE_TASK_BODY rtems_idle
> #define CONFIGURE_EXTRA_TASK_STACKS (CONFIGURE_MAXIMUM_TASKS *
> RTEMS_MINIMUM_STACK_SIZE)
>
> #define CONFIGURE_MAXIMUM_DRIVERS 6
>
> /* NOTICE: the clock driver is explicitly disabled */
> #define CONFIGURE_APPLICATION_DOES_NOT_NEED_CLOCK_DRIVER
> #define CONFIGURE_APPLICATION_NEEDS_CONSOLE_DRIVER
>
> #define CONFIGURE_DISABLE_CLASSIC_API_NOTEPADS
> #define CONFIGURE_MAXIMUM_TASKS 40 // TX MAX_THREAD
> #define CONFIGURE_MAXIMUM_TIMERS 40 // TX MAX_TIMER
> #define CONFIGURE_MAXIMUM_SEMAPHORES 40 // TX MAX_MUTEX
> #define CONFIGURE_MAXIMUM_MESSAGE_QUEUES 40 // TX MAX_MSG_QUEUE
> #define CONFIGURE_MAXIMUM_PARTITIONS 5
> #define CONFIGURE_MAXIMUM_REGIONS 5
> #define CONFIGURE_MAXIMUM_PORTS 0
> #define CONFIGURE_MAXIMUM_PERIODS 0
> #define CONFIGURE_MAXIMUM_BARRIERS 0
>
> #define CONFIGURE_MICROSECONDS_PER_TICK 10000 /* 10 milliseconds */
> #define CONFIGURE_TICKS_PER_TIMESLICE 50 /* 50 milliseconds */
>
> #define CONFIGURE_APPLICATION_NEEDS_LIBBLOCK
> #define CONFIGURE_BDBUF_MAX_READ_AHEAD_BLOCKS 2
> #define CONFIGURE_BDBUF_MAX_WRITE_BLOCKS 8
> #define CONFIGURE_SWAPOUT_TASK_PRIORITY 15
> #define CONFIGURE_USE_IMFS_AS_BASE_FILESYSTEM
> #define CONFIGURE_FILESYSTEM_RFS
> #define CONFIGURE_LIBIO_MAXIMUM_FILE_DESCRIPTORS 10
>
> #define CONFIGURE_RTEMS_INIT_TASKS_TABLE
> #define CONFIGURE_INIT
> #include <rtems/confdefs.h>
>
>
> uint32_t rtems_flashdisk_configuration_size =1;
> const char* flash_driver = "/dev/fdda"; //
> RTEMS_FLASHDISK_DEVICE_BASE_NAME, 1st device
> const char* flash_path = "/flash";
>
> uint32_t rtems_nvdisk_configuration_size =1;
> const char* sram_driver = "/dev/nvda"; // RTEMS_NVDISK_DEVICE_BASE_NAME,
> 1st device
> const char* sram_path = "/sram";
>
>
> /**
> * Let the IO system allocation the next available major number.
> */
> #define RTEMS_DRIVER_AUTO_MAJOR (0)
>
> #define FLASHDISK_SEGMENT_COUNT 8 /* 128*/ // Spansion S29GL128S,
> 128Mbit part
> #define FLASHDISK_SEGMENT_SIZE (128 * 1024) // Spansion S29GL128S, 128k
> sized sectors
> #define FLASHDISK_BLOCK_SIZE 512
> #define FLASHDISK_BLOCKS_PER_SEGMENT (FLASHDISK_SEGMENT_SIZE /
> FLASHDISK_BLOCK_SIZE)
> #define FLASHDISK_SIZE (FLASHDISK_SEGMENT_COUNT * FLASHDISK_SEGMENT_SIZE)
>
>
> /**
> * The SRAM Device setup
> */
> rtems_nvdisk_device_desc rtems_sram_device_descriptor[] =
> {
> {
> flags: 0,
> base: 0,
> size: 256 * 1024, // 256K (Adjust when ROM.ld, _IMFS_DiskSize is
> changed)
> nv_ops: &rtems_nvdisk_sram_handlers
> }
> };
>
> const rtems_nvdisk_config rtems_nvdisk_configuration[] =
> {
> {
> block_size: 512,
> device_count: 1,
> devices: &rtems_sram_device_descriptor[0],
> flags: 0,
> info_level: 0
> }
> };
>
>
>
>
> /**
> * Create the SRAM Disk Driver entry.
> */
> rtems_driver_address_table rtems_sram_ops = {
> initialization_entry: rtems_nvdisk_initialize,
> open_entry: rtems_blkdev_generic_open,
> close_entry: rtems_blkdev_generic_close,
> read_entry: rtems_blkdev_generic_read,
> write_entry: rtems_blkdev_generic_write,
> control_entry: rtems_blkdev_generic_ioctl
> };
>
>
>
> int setup_sram_disk (int cold_boot)
> {
> rtems_device_major_number major;
> rtems_status_code sc;
>
> // settings
> rtems_sram_device_descriptor[0].base = (unsigned
> long)eTalus_IMFS_start;
>
> if (cold_boot)
> {
> memset(rtems_sram_device_descriptor[0].base, 0xff,
> rtems_sram_device_descriptor[0].size );
> }
>
> /*
> * Register the NV Disk driver.
> */
> sc = rtems_io_register_driver (RTEMS_DRIVER_AUTO_MAJOR,
> &rtems_sram_ops, &major);
> }
>
>
> /*
> *
> * RFS on SRAM
> *
> */
>
> void mount_rfs_on_sram(int cold_boot)
> {
> rtems_rfs_format_config config;
>
> setup_sram_disk (cold_boot);
>
> // zero is a good set of defaults
> memset (&config, 0, sizeof (rtems_rfs_format_config));
>
> if (rtems_rfs_format (sram_driver, &config) < 0)
> {
> sprintf(inital_print_buffer,"error: format of %s failed: %s\n",
> sram_driver, strerror (errno));
> UART0_SendStr(inital_print_buffer);
> }
>
> if (mount_and_make_target_path(
> sram_driver,
> sram_path,
> RTEMS_FILESYSTEM_TYPE_RFS,
> RTEMS_FILESYSTEM_READ_WRITE,
> NULL
> ) != 0)
> {
> sprintf(inital_print_buffer,"error: mount of %s to %s failed:
> %s\n", sram_driver, sram_path, strerror (errno));
> UART0_SendStr(inital_print_buffer);
> }
>
> rc = rtems_mkdir("sram/DB", S_IRWXU | S_IRGRP | S_IXGRP | S_IROTH |
> S_IXOTH);
> }
>
>
>
> ------------------- end ------------------------
>
>
>
>
>
> On 18 March 2013 17:42, Joel Sherrill <joel.sherrill at oarcorp.com> wrote:
>
>> Is this reproducible with something you can share?
>>
>> Looking at the source, I think this case is that you
>> filled the filesystem and there were no free blocks.
>> But I am looking at the head and not that familiar
>> with this filesystem.
>>
>> --joel
>>
>> On 3/18/2013 12:20 PM, Matthew J Fletcher wrote:
>>
>>> Hi,
>>>
>>> I have an RFS filesystem using the nvram device, its formatted ok and
>>> mount_and_make_target_path() also worked ok. But attempting to mkdir()
>>> causes a really lowlevel issue.
>>>
>>> The callstack;
>>>
>>> rtems_rfs_block_map_find() at rtems-rfs-block.c:246 0x81198bd8
>>> rtems_rfs_block_map_next_**block() at rtems-rfs-block.c:353 0x81198d1e
>>> rtems_rfs_dir_lookup_ino() at rtems-rfs-dir.c:204 0x8119951c
>>> rtems_rfs_rtems_eval_for_make(**) at rtems-rfs-rtems.c:440 0x8118e142
>>> IMFS_evaluate_for_make() at imfs_eval.c:435 0x81190718
>>> mknod() at mknod.c:64 0x81183d5c
>>> mkdir() at mkdir.c:29 0x81183cf0
>>> build() at rtems_mkdir.c:101 0x811843a0
>>> rtems_mkdir() at rtems_mkdir.c:136 0x811843a0
>>>
>>>
>>> the rtems_rfs_block_pos_block_**past_end macro is failing and causing
>>> the return of ENXIO.
>>>
>>> The two arguments to the macro are;
>>>
>>> bpos->bno = 1
>>> bpos->boff = 0
>>> bpos->block = 0
>>>
>>> map->size->count = 1
>>> map->size->offset = 0
>>>
>>> Which seems to me the cause of ENXIO being returned, but i dont know how
>>> my BSP could affect this.
>>>
>>> Do people use RFS in production systems ? i am using the 4.10.2 sources.
>>>
>>>
>>> regards
>>> ---
>>> Matthew J Fletcher
>>>
>>>
>>
>> --
>> Joel Sherrill, Ph.D. Director of Research & Development
>> joel.sherrill at OARcorp.com On-Line Applications Research
>> Ask me about RTEMS: a free RTOS Huntsville AL 35805
>> Support Available (256) 722-9985
>>
>>
>
>
> --
>
> regards
> ---
> Matthew J Fletcher
>
> _______________________________________________
> rtems-users mailing list
> rtems-users at rtems.org
> http://www.rtems.org/mailman/listinfo/rtems-users
>
>
>
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