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rommelin
n00b
Joined: 03 Sep 2002
Posts: 62
Location: Spain
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 Posted: Mon Sep 15, 2003 5:16 pm Post subject: Reiserfs and bad blocks |
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Hi
Today, when a was running my Gentoo, during a compilation, suddenly everything began to go wrong. And when i power off the pc i wasn't able to reboot again.
It seems there are bad blocks in my resierfs partition.
I tried to fix it with Knoppix (a live-cd) and reiserfsck but it says the partition has bad blocks and warn me to buy a new hd.
The thing is that i have a lot of information in that partition, not to talk about my sweet Gentoo.
I would like to know is there would be a possibility to access the partition and recover the information.
If i have to reinstall evrything, it doesn't matter, but i would like to recover all the documents, programs and more thing i had in that partition.
Thanks
rommel |
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rommelin
n00b
Joined: 03 Sep 2002
Posts: 62
Location: Spain
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| Posted: Mon Sep 15, 2003 11:12 pm Post subject: |
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Any solutions?
I still haven't found anything to solve it.
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siti
Tux's lil' helper
Joined: 05 May 2003
Posts: 118
Location: Canterbury, New Zealand
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| Posted: Tue Sep 16, 2003 4:54 am Post subject: |
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What I done when I found a disk had bad sectors/blocks is back up everything.
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cd /
tar cfz backup.tar.gz bin boot dev etc home lib mnt opt root sbin tmp usr var
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Now ship this to another computer I used SSH.
(include anything else that is on the root parition) BTW if you have parts mounted abnomrally such as home and you are not going to fix that parition then exclude it from the backup.tar.gz commmand.)
Reboot into knoppix or gentoo-live-cd then:
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fsck.reiserfs -S --rebuild-tree
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This for me anyway wrecked half my data (slight exageration;) so what you want to do is extract the tar ball
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tar xvfz backup.tar.gz
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rommelin
n00b
Joined: 03 Sep 2002
Posts: 62
Location: Spain
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| Posted: Tue Sep 16, 2003 8:42 am Post subject: |
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Thanks for answering
The problem is that i can't even mount the partition. I can't access to it.
| Code: | reiserfsck /dev/hde2
###########
reiserfsck --check started at Tue Sep 16 10:28:12 2003
###########
Replaying journal..
0 transactions replayed
The problem has occurred looks like a hardware problem.
If you have bad blocks, we advise you to get a new hard
drive, because once you get one bad block that the disk
drive internals cannot hide from your sight, the chances
of getting more are generally said to become much higher
(precise statistics are unknown to us), and this disk drive
is probably not expensive enough for you to risk your time
and data on it. If you don't want to follow that advice,
then if you have just a few bad blocks, try writing to the
bad blocks and see if the drive remaps the bad blocks (that
means it takes a block it has in reserve and allocates it
for use for requests of that block number). If it cannot
remap the block, this could be quite bad, as it may mean
that so many blocks have gone bad that none remain in
reserve to allocate.
bread: Cannot read the block (3211264): (Input/output error).
Abortado
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| Code: |
:arrow: mount /dev/hde2
mount: wrong fs type, bad option, bad superblock on /dev/hde2,
or too many mounted file systems
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I only want to access the files and backup them. Don't bother if i have to reinstall Gentoo.
I have a lot of information which is important for me.
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bonsaikitten
Apprentice
Joined: 01 Jan 2003
Posts: 213
Location: Shanghai, China
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| Posted: Tue Sep 16, 2003 7:46 pm Post subject: |
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That sounds bad ... but remember the old rule (and call me cynical): If it's not backuped it doesn't exist ...
Try not to use the harddisk. If possible, copying the whole disk with dd onto a new disk and then restoring the fs on the new disk would be about the safest way of doing it.
Reiserfs is quite sensitive to errors, so don't count on restoring 100% of your data. I hope your loss stays within reasonable bounds. |
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rommelin
n00b
Joined: 03 Sep 2002
Posts: 62
Location: Spain
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| Posted: Tue Sep 16, 2003 9:56 pm Post subject: |
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Thanks
I'll try to do that on the weekend, when i have time.
I'm only using the other partitions of the harddisk because i have to make space for the image, but i'm not using the bad partition.
I hope this doesn't ruin the recovery.
Regards
rommelin |
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