How to identify damaged files in ext HDD?
Early 2008 iMac - iMac8,1 - Intel Core 2 Duo - OS X 10.6.8 - (int) Samsung SSD 840 EVO 500GB - (ext) OWC Qx2 enclosure w. 4x2TB TOSHIBA DT01ACA200 - Wacom Intuos Pen&Touch tablet (no mouse) - DSL - Flash Player.
I think hardware is the place for this question.
I inherited this iMac back in May/June, spent a month or two with it, did a fresh install of Leopard, and then Snow Leopard on top of that. Everything seemed fine. Speedy response. Decent browsing speed, even with my crappy 3 Mbps DSL.
I added two separate HW upgrades: a SSD int hard drive + RAM to 4GB (installed by reputable local shop), and added a 4-bay ext HDD set up as 4 independent drives, JBOD (purchased from OWC). I feel I made a mistake in doing both of those things at the same time, as I immediately encountered glitches that have been hard to troubleshoot. The worst was the ext HDD / enclosure suddenly un-mounting all by itself, complete with error message ("was not ejected properly"), promptly after which the drives reappear on the desktop, with their contents seemingly in place.
I'm not looking for help troubleshooting; I think I've found the problem, at least for the un-mount issue (bad FW port, thankfully there are two). There might or might not be lingering stall-when-opening-folder issues, too soon to tell. Both vendors have been helpful with their responses.
What I'd like to know is how (or if) the contents of the ext HDDs can be scrutinized for damage? This un-mount thing happened at least a dozen times, and several other times I was forced to manually shut down the HDD enclosure when everything else was frozen. I have to think something's been corrupted or damaged with all of that un-ejected off-and-on activity.
Any input is appreciated. Thanks in advance!
Old Toad wrote:
Have you run any cleaning or optimizing apps like MacKeeper or CleanMyMac? Those are known to cause serious problem with Macs including slowdowns,
No, I've always avoided those like the plague. The pop-up ads for that crap are the obvious cues to stay away!
Linc Davis wrote:
The only meaningful test of whether there are "corrupt files" is to use the computer. If it behaves normally, you can assume that the operating system and applications are intact. As for your other files, open the most important of them and see whether the contents are what you expect.
Though swapping the FW port SEEMS to have stopped the sudden un-mounting (maybe not enough time spent scrutinizing that yet), there is still problematic behavior. Just this evening, after the desktop was on all day but saw little use (Safari, iTunes), I tried simply opening one of the hard drives:
- 8 minutes to simply open the window. Spinning beach ball. Window changed dimensions from prior use, appeared as though it was opened for the first time. It showed no contents.
- 20 more minutes to show contents. During this time, the spinning progress wheel spun. Contents finally showed up.
- 8 more minutes to open one folder. Spinning progress wheel.
Contents appear to be there. This is a storage disc, no backups ever performed. This new 2TB drive contains only 100GB.
This stall seemingly caused other stalls elsewhere. Namely, a simple text copy-and-paste function in TextEdit. When the HDD finally decided to finish, TextEdit was available to me again.
Welcome to my world.
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ChristophMandy, thanks for your feedback! I've read these technet articels, but I couldn't learn something really helpfull related to my problem there. To make investigation of the problem easier I did the following:
- created a brand new empty volume (x:) on the same server
- enabled data deduplication on that volume with a minimal file age of 0 days
- copied about 2GB of data from the problem-volume in 15450 files to this new volume
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I am having problems with the GUI_DOWNLOAD method for downloading PDF files to the presentation server.
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Attached here is the screenshot of the error message when opening a PDF file.Codes extract:-
*& Form download_all_attachments
* Download all attachments
FORM download_all_attachments .
DATA: lv_obj TYPE swotobjid-objkey.
DATA: lv_instid TYPE sibfboriid.
DATA: lv_classname TYPE bapibds01-classname.
DATA: lv_fol_id TYPE soodk.
DATA: lv_doc_id TYPE soodk.
DATA: lv_filename TYPE string.
DATA: lv_path TYPE string.
DATA: lv_fullpath TYPE string.
DATA: lv_path_tmp TYPE string.
DATA: lv_result TYPE i.
DATA: lv_sapusr_dir TYPE sdok_chtrd.
DATA: lv_directory TYPE string.
DATA: lwa_srgbtbrel TYPE srgbtbrel.
DATA: lwa_conn TYPE bdn_con.
DATA: lwa_errormsg TYPE iwerrormsg.
DATA: lt_srgbtbrel TYPE STANDARD TABLE OF srgbtbrel.
DATA: lt_conn TYPE STANDARD TABLE OF bdn_con.
DATA: lt_conn_tmp TYPE STANDARD TABLE OF bdn_con.
DATA: lt_objcont TYPE STANDARD TABLE OF soli.
FIELD-SYMBOLS: <lwa_final> TYPE zfidocattach.
CONSTANTS: lc_attach_field TYPE slis_fieldname VALUE 'ATTACH'.
CONSTANTS: lc_temp_path TYPE string VALUE 'C:\temp'.
CONSTANTS: lc_separate(1) TYPE c VALUE ';'.
CONSTANTS: lc_period(1) TYPE c VALUE '.'.
LOOP AT gt_final ASSIGNING <lwa_final>.
CLEAR: lv_obj, lv_instid, lv_classname,
lt_srgbtbrel, lt_conn, lwa_srgbtbrel.
CONCATENATE <lwa_final>-bukrs <lwa_final>-belnr <lwa_final>-gjahr
INTO lv_obj.
lv_instid = lv_obj.
SELECT *
FROM srgbtbrel
INTO TABLE lt_srgbtbrel
WHERE reltype = lc_attachment_rel
AND instid_a = lv_instid
AND catid_a = lc_borobj_ctgy.
SORT lt_srgbtbrel BY typeid_a.
DELETE ADJACENT DUPLICATES FROM lt_srgbtbrel
COMPARING typeid_a.
LOOP AT lt_srgbtbrel INTO lwa_srgbtbrel.
CLEAR lt_conn_tmp.
lv_classname = lwa_srgbtbrel-typeid_a.
CALL FUNCTION 'BDS_GOS_CONNECTIONS_GET'
EXPORTING
classname = lv_classname
objkey = lv_obj
client = sy-mandt
TABLES
gos_connections = lt_conn_tmp
EXCEPTIONS
no_objects_found = 1
internal_error = 2
internal_gos_error = 3
OTHERS = 4.
APPEND LINES OF lt_conn_tmp TO lt_conn.
CLEAR: lwa_srgbtbrel, lv_classname.
ENDLOOP.
LOOP AT lt_conn INTO lwa_conn.
MOVE lwa_conn-loio_id TO lv_fol_id .
MOVE lwa_conn-loio_id+17(25) TO lv_doc_id .
CALL FUNCTION 'SO_OBJECT_READ'
EXPORTING
folder_id = lv_fol_id
object_id = lv_doc_id
TABLES
objcont = lt_objcont.
IF sy-subrc <> 0.
MESSAGE ID sy-msgid TYPE sy-msgty NUMBER sy-msgno
WITH sy-msgv1 sy-msgv2 sy-msgv3 sy-msgv4.
ENDIF.
CALL FUNCTION 'IW_C_GET_SAPWORKDIR'
IMPORTING
sapworkdir = lv_sapusr_dir
error_msg = lwa_errormsg.
IF sy-subrc = 0.
lv_directory = lv_sapusr_dir.
ELSE.
lv_directory = lc_temp_path.
ENDIF.
CONDENSE lv_directory.
* Filename format:
* Company code;YYMM(posting Date);Document number;Attach File name.ext
CONCATENATE <lwa_final>-bukrs lc_separate
<lwa_final>-budat(4) <lwa_final>-budat+4(2) lc_separate
<lwa_final>-belnr lc_separate
lwa_conn-descript lc_period lwa_conn-docuclass
INTO lv_filename.
IF lv_path IS INITIAL.
* Display save dialog window
CALL METHOD cl_gui_frontend_services=>file_save_dialog
EXPORTING
default_extension = 'ASC'
default_file_name = lv_filename
initial_directory = lv_directory
CHANGING
filename = lv_filename
path = lv_path
fullpath = lv_fullpath
user_action = lv_result.
IF sy-subrc <> 0 OR
lv_result <> cl_gui_frontend_services=>action_ok.
EXIT.
ENDIF.
CHECK lv_result EQ '0'.
ELSE.
CLEAR: lv_path_tmp, lv_fullpath.
lv_path_tmp = lv_path.
CONCATENATE lv_path_tmp lv_filename
INTO lv_fullpath.
ENDIF.
CALL METHOD cl_gui_frontend_services=>gui_download
EXPORTING
* bin_filesize =
filename = lv_fullpath
filetype = 'ASC'
* APPEND = SPACE
* write_field_separator = 'X'
* HEADER = '00'
* TRUNC_TRAILING_BLANKS = SPACE
* WRITE_LF = 'X'
* COL_SELECT = SPACE
* COL_SELECT_MASK = SPACE
* DAT_MODE = SPACE
* CONFIRM_OVERWRITE = SPACE
* NO_AUTH_CHECK = SPACE
* CODEPAGE = SPACE
* IGNORE_CERR = ABAP_TRUE
* REPLACEMENT = '#'
* WRITE_BOM = SPACE
* TRUNC_TRAILING_BLANKS_EOL = 'X'
* IMPORTING
* FILELENGTH =
CHANGING
data_tab = lt_objcont
EXCEPTIONS
file_write_error = 1
no_batch = 2
gui_refuse_filetransfer = 3
invalid_type = 4
no_authority = 5
unknown_error = 6
header_not_allowed = 7
separator_not_allowed = 8
filesize_not_allowed = 9
header_too_long = 10
dp_error_create = 11
dp_error_send = 12
dp_error_write = 13
unknown_dp_error = 14
access_denied = 15
dp_out_of_memory = 16
disk_full = 17
dp_timeout = 18
file_not_found = 19
dataprovider_exception = 20
control_flush_error = 21
not_supported_by_gui = 22
error_no_gui = 23
OTHERS = 24.
IF sy-subrc <> 0.
* MESSAGE ID SY-MSGID TYPE SY-MSGTY NUMBER SY-MSGNO
* WITH SY-MSGV1 SY-MSGV2 SY-MSGV3 SY-MSGV4.
ENDIF.
* CALL FUNCTION 'GUI_DOWNLOAD'
* EXPORTING
* filename = lv_fullpath
* filetype = 'ASC'
** append = 'X'
* write_field_separator = 'X'
** confirm_overwrite = 'X'
* TABLES
* data_tab = lt_objcont
* EXCEPTIONS
* file_open_error = 1
* file_write_error = 2
* OTHERS = 3.
CLEAR lwa_conn.
ENDLOOP.
ENDLOOP.
ENDFORM. " download_all_attachments -
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ġˇ
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-ChrisI used a hex editor to open the damaged file named 0006d407 Localized.rsrc
and the contents of what I was able to see are below (the rest of the file is
not accessible):
$$2 fns fnsp FontSync Profile 2kind
ġˇ
(the other characters in the file were null characters and were not displayed when I pasted this).
Last September, there was an invalid reference in the metadata and I had to fix that invalid
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