Am Mittwoch, 9. Oktober 2002 16:02 schrieb Dieter N�tzel: > Am Mittwoch, 9. Oktober 2002 10:18 schrieb Oleg Drokin: > > Hello! > > > > On Wed, Oct 09, 2002 at 11:06:36AM +0300, Robert Tiismus wrote: > > > > Also you probably want to run reiserfsck on that disk to make sure > > > > no other damage happened. > > > > > > Thank you. Reiserfsck said that all is ok. It's just that I have seen > > > nothing > > > > This is good. > > > > > similar happening with other filesystems. I would prefer disappearing > > > data to leaking data. Am I completely wrong, when I say that because of > > > 'tail packing' in ReiserFS, it can leak information with more > > > probability than, lets say ext2 or ufs or...? Will notails option give > > > > No, tail packing should have no effect on leakign data. > > Anyway tail packing is only takes effect for files less than 16K in size. > > > > > me more secure FS? I have to assure company management, and myself, > > > that this > > > > notails will have no effect on that. > > > > > incident happened not because I put ReiserFS on new server. It could > > > have happened also with other filesystems :) > > > > Indeed it seems that you've got either some metadata altered (block > > pointers) or the block content swapped somehow, both of which could > > happen on any FS with absolutely same results. > > BTW, I just remembered that until you apply Chris' Mason "data logging" > > patches, there is a certain window where system crash would lead to > > "deleted" data appearing at the end of files that were appended before > > the crash. (that's it, metadata is already updated and list newly > > allocated blocknumbers, but old content od those blocks is still intact > > since crash prevented system from putting new content in there), but > > since you've got other file's data in the middle of file, this is not the > > case. > > Oleg, I "see" it from time to time during kernel and DRI development (X > server crashes), too. This times without Chris's stuff. 2.4.19-ck5 (latest > ReiserFS patches for 2.4.19) and now with 2.5.40-ac3. > > Most times "messages", "localmessages", kernel .o.*, dep files, etc. are > broken (wrong stuff or mixed stuff). > > Latest my ".q3a/baseq3/q3key" file (DRI SMP tests) was broken (completely > other stuff in it) even though it only should opened for reading.
Oh, forgotten my mount options: /dev/sda3 on / type reiserfs (rw,noatime,notail) /dev/sda2 on /tmp type reiserfs (rw,notail) /dev/sda5 on /var type reiserfs (rw,notail) /dev/sda6 on /home type reiserfs (rw,notail) /dev/sda7 on /usr type reiserfs (rw,notail) /dev/sda8 on /opt type reiserfs (rw,notail) /dev/sdb1 on /Pakete type reiserfs (rw,notail) /dev/sdb5 on /database/db1 type reiserfs (rw,notail) /dev/sdb6 on /database/db2 type reiserfs (rw,notail) /dev/sdb7 on /database/db3 type reiserfs (rw,notail) /dev/sdb8 on /database/db4 type reiserfs (rw,notail) -Dieter
