problems with RFS filesystem and mkdir
Matthew J Fletcher
amimjf at gmail.com
Wed Mar 20 13:30:36 UTC 2013
Hi,
I wonder if this is target specific now, if i literately use the sources
you posted i get an error '-1' returned from the rtems_mkdir().
The only change i made was to malloc a smaller chuck, 32k. Of course my
malloc() is operating of the same SRAM chip, but it was in a different
address range.
Not sure what to do now, i guess i have to work out whats up with RFS on
ARM thumb. Does anyone know what platforms RFS was tested/developed on ?
On 19 March 2013 21:36, Cudmore, Alan P. (GSFC-5820) <
alan.p.cudmore at nasa.gov> wrote:
> No problem. I have a pretty easy to use 4.10 setup right now.
>
> I did have to run the memset code for the address space. If you pass a 0
> in the cold_boot parameter, it fails.
>
> Alan
>
> On Mar 19, 2013, at 5:21 PM, Matthew J Fletcher <amimjf at gmail.com> wrote:
>
> 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
>>
>>
>>
>
--
regards
---
Matthew J Fletcher
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