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Old 02-27-2011, 02:36 PM   #1
mcarro
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Device: IRex DR 1000
Files don't show up in Irex - corrupt SD?

I have a 1.5 Y.O. DR 1000 and suddenly files which are on the SD card do not appear in the DR 1000. They are visible (on a Linux machine) by mounting the SD card through a USB cable attached to the IREX on the other end, and also by plugging the SD card in a SD-to-USB reader (I do not have a SD slot in my laptop). Checking / repairing the card does not show any problem in the filesystem. If this helps, it is a 2GB card; its brand is PNY. This had happened with another card (a SanDisk, IIRC) and I bought the current one because i suspected of corruption in the previous one. The current one is about 2 weeks old, and the files disappeared after a hard lock which forced me to reboot the device. I am running the rc3 beta candidate with Mack's firmware update v8 (see the Developer's corner).

Any ideas / hints? For my work, disappearing files is a big no-no. The files which disappear seem to be the youngest ones.

Thanks for any help!
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Old 02-27-2011, 04:45 PM   #2
Paquillo
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Device: iRex DR1000S, Motorola Xoom, Sony PRS-T1
Quote:
Originally Posted by mcarro View Post
I have a 1.5 Y.O. DR 1000 and suddenly files which are on the SD card do not appear in the DR 1000. They are visible (on a Linux machine) by mounting the SD card through a USB cable attached to the IREX on the other end, and also by plugging the SD card in a SD-to-USB reader (I do not have a SD slot in my laptop). Checking / repairing the card does not show any problem in the filesystem. If this helps, it is a 2GB card; its brand is PNY. This had happened with another card (a SanDisk, IIRC) and I bought the current one because i suspected of corruption in the previous one. The current one is about 2 weeks old, and the files disappeared after a hard lock which forced me to reboot the device. I am running the rc3 beta candidate with Mack's firmware update v8 (see the Developer's corner).

Any ideas / hints? For my work, disappearing files is a big no-no. The files which disappear seem to be the youngest ones.

Thanks for any help!
I don't know very much on this, but it sounds like if the "view" for the SD card has disappeared in the system. Maybe it is something related to permissions, owner, etc. in the GTK configuration.

I repeat that I'm just pointing to possibilities that come to my mind. Other people with better knowledge of GTK can say something more consistent.

I am running the same firmware with the same update of Mackx patch as you, but I have never suffered such a problem with the SD card. At least I would say that it is not related to this firmware version.

Sorry for not being of more help...
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Old 02-28-2011, 02:23 AM   #3
Mackx
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The DR does not show the actual content of the SD-card. During booting all folders on the SD-card are scanned and every new file is added to global.db in the root of your SD-card. (Also files that are no longer on the SD-card are removed from the global.db file.)
global.db is a sqlite3 database-file. When this file gets corrupt, no new entries can be added in the database anymore. The simplest solution is to remove global.db, the next time you start your DR it will be re-created. The downside is that the file also contains the thumbnails, so after removing the db-file, these will also be gone. Depending on the settings, these will be generated when a new file is added to the database (which takes a long(er) time when booting) or when you open a file.
The 'last-read-page' and the tag (and any modified title or author) of every file will also be lost.

I do not know if there is a tool that can extract the non-corrupt parts of the global.db file and create a new file. Anyone?
(It might be worth to save the old global.db file, incase anyone knows of such tool.)

All scribbles and bookmarks are stored in local databases (called metadata.db) which are in each folder. So they should still be ok.

Hope this helps,
Marcel.
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Old 03-01-2011, 06:39 AM   #4
mcarro
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Quote:
Originally Posted by Mackx View Post
The DR does not show the actual content of the SD-card. During booting all folders on the SD-card are scanned and every new file is added to global.db in the root of your SD-card. (Also files that are no longer on the SD-card are removed from the global.db file.)
global.db is a sqlite3 database-file. When this file gets corrupt, no new entries can be added in the database anymore. The simplest solution is to remove global.db, the next time you start your DR it will be re-created. The downside is that the file also contains the thumbnails, so after removing the db-file, these will also be gone. Depending on the settings, these will be generated when a new file is added to the database (which takes a long(er) time when booting) or when you open a file.
Ok, great. That is much better than what I have been doing so far (using a unison-created backup which ignores the .db files, formatting, and restoring the contents of the SD card).

Thanks a lot!
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