2012/1/2 Michael Rösch <[email protected]> > Am 02.01.2012 12:01, schrieb Pavel Řezníček: > > My dear Maemo friends, > > > > On my N900, I use the /Debian chrooted system/ but I /very often run > > into troubles/ with it. > > > > To read quickly, go after the words /in italics/ ;-) > > > > I just need to compile the /Lazarus Free Pascal IDE/ for my device > > and/or to /develop applications with it./ > > Sometimes it happened when I had Debian in an image file that /my N900 > > suddenly crashed and switched off/ during the installation of some > > packages into Debian. So I ran fsck, expecting some damage to the > > filesystem in that image file. But the corruption appeared so heavy that > > it was /basically unrepairable./ > > This happenened /very frequently/ so I started to keep a backup of the > > standard 2GiB image. Still, the loss of work was /very annoying…/ it’s a > > bit time consuming to backup 2GiB of data after each single step, don’t > > you think so? > > OK, I thought it was better to use a physical device, an MMC SD card. So > > /I’ve formatted an 8GB card to ext3/ and /copied/ all the contents of > > the Debian image onto it using rsync. > > I’ve then modified the /home/user/.chroot configuration script > accordingly. > > All has worked fine except that during installation of the compiled > > Lazarus (make install) /a copy command has frozen for all the night./ > > That was strange, so I pressed /Ctrl+C with no effect./ I tried to > > /Close Debian./ /It has also hung./ So I’ve turned my device off. > > OK, the first run of fsck on /dev/mmcblk1p1 has just /recovered the ext3 > > filesystem journal./ > > I’ve been curious then if there were some errors left there, so I’ve run > > /fsck -f /dev/mmcblk1p1. Ouch! A destruction of the fs again!/ > > > > *The side question:* > > /Is it a good idea to check an ext3 filesystem right after a journal > > recovery? Or should I first mount it?/ I’m apparently lacking an > > essential knowledge here. > > I think fsck before mounting is never a bad idea. When the fs is damaged > the mount can make things even worse. > > > *The main question:* > > /Is it possible to avoid severe filesystem damage/ during just normal > > but io-intensive operations /on the Debian for armel on the N900?/ > > > > I am using my debian on an ext2-Partition for over a year now on two > three different cards- never had any problems like you. > I also use another ext3-Partition on the same card for data, the same > here: no problems. > > Have you ever considered your sd-card may be broken or simply not > suitable for the n900? > Do you have the possibility to try another one? > I using a Patriot 32Gb Class 10 now, before it was a Transcend 16 GB > Class 6. > > CU Michael > -- > BOMBING for peace is like FUCKING for virginity. > _______________________________________________ > maemo-users mailing list > [email protected] > https://lists.maemo.org/mailman/listinfo/maemo-users >
Dear Michael,
thank you for your kind response!
I'm glad to know that running fsck before mounting is never a bad idea [?]
OK, *the SD-card may really be broken,* that's right. I have to go for one
and buy it (or via an e-shop) as soon as I have the time. Or, I may *test
this old one for bad blocks.*
*
*
But *what was then wrong with my Debian when run from an image file* on the
internal memory storage (/home/user/MyDocs/debian-m5-v3e.img.ext2)?
As I mentioned before, during the installation process of some more
packages, my N900 just went off regularly. Did you any time try to *upgrade
your whole Debian system* ("sudo apt-get update; sudo apt-get upgrade"
without specifying a package)? This is what I actually tried a couple of
times but always ended up in a switch-off in random stages of the package
installation, resulting in a severe filesystem damage inside the Debian
image file…
The case with the installation of the Lazarus IDE on the SD-card and on an
ext3 formatted partition might be related but also unrelated.
So the next step is to check the card for physically bad blocks. I'll give
it a try and report the results [?]
--
Pavel Řezníček
software developer and computer network administrator
vývojář a správce počítačových sítí
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