adonisslanic
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Posts posted by adonisslanic
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Linux filesystems have a long and checkered history behind them and every now and then there is much excitement as a new filesystem is about to become mainstream and production ready. This is especially true when they are not merely a incremental improvement as with the case of Ext4 over Ext3 but take a giant leap forward as Btrfs has been promising for a number of years. So now is a good time to review what has been going on and this article does just that.
For most users, Ext3 would be very familiar. Red Hat, Debian and several other major distributions have been using Ext3 for a long time as the default and SUSE (and soon after that SLES as well) switched from Reiserfs to Ext3 as well back in 2006 citing wider developer community in Ext3 and a clear roadmap to Ext4 among other reasons.
Ext4 has now established itself as the straightforward successor to Ext3 with several incremental improvements including better performance, scalability and higher storage capacity. However the codebase has a very long history and there are design limitations which cannot be removed easily without a major rewrite.
This is where Btrfs comes into the picture. As noted in the above email from Jeff Mahoney, Chris Mason who used to work on Reiserfs for SUSE left to join Oracle in 2006 and in 2007 announced the Btrfs filesystem project.
Btrfs has a number of major new features including snapshots, checksum on both data and metadata, transparent compression, integrated RAID and even in-place conversion from Ext3/4. It also has support from major vendors including Red Hat, Intel and Fujitsu. Most distributions already offer it as a option and the future looks bright and shiny for Btrfs to dethrone Ext3/4 as future defacto filesystem in Linux. There is only one problem. The future is not here yet.
One major problem is that Btrfs still lacks a fsck (filesystem checking utility) that can actually fix any issues. The current public version can merely report them. Fedora, led by Josef Bacik, Red Hat Btrfs filesystem developer, originally planned to move to Btrfs as the default filesystem for Fedora 16 but due to fsck and other issues has postponed it twice and is planning to try again for Fedora 18. Interestingly SUSE Linux Enterprise Server 11 has already made the move and claims to support Btrfs although it remains to be seen how eager enterprises are ready to adopt it in such a early stage. Meanwhile XFS has emerged as a stealth contender, enjoys strong support from Red Hat, Novell and others and is a mature filesystem that perhaps deserves more attention from the community in the future .
Filesystems are like wine and in the next six months to an year, one can expect Btrfs to become more mature, widely adopted and the Linux world will be better for it.
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4 lei, dau si o punga de chipsuri goala xD. Ontopic: recomand mouseul cu caldura, chiar e dragut de folosit, si portabilitatea sa este foarte, foarte simtita cand mergi la drum cu laptopul si vrei un mouse
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pune si tu getch(); la sfarsit :\
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Criptografie, computer vision si computer security
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Pretty good idea, mai ales in ultimul tau mesaj, sau un sistem simplu care daca vede frumos si ms unul dupa altul(sau combinatii similare) sa nu te lase sa postezi mesajul. As face eu un sistem, dar nu am experienta in php coding :\ Si sincer sa fiu, nici chef xD
Auto-inchidere dupa fix un an de la ultima postare ar fi ok, si doar cei cu un numar ridicat de posturi+o vechime oarecare sa poata sa redeschida doar pentru un singur post: al lor
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I like the wallpaper xD, si imi place tendinta glassy cu gaussian blur, a devenit o moda
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Dupa vanzarile oficiale....
HAHAHA xD imi plac counterele care masoara timpul ramas pana la epuizarea resurselor epuizabile
15,265 Days to the end of oil
60,691 Days to the end of gas
151,861 Days to the end of coal
LE: Lol http://www.7billionworld.com/
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Fuck this is so hardcore O_o Tehnologia evolueaza sub ochii nostri...
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Ba voi nu vedeti postul meu? O_O what the actual fuck...
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Mi-e jena ca traiesc in acelasi oras cu handicapatul ala
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Nu prea are legatura cu faptul ca Steve Jobs a murit, oricum designerul din spatele produselor Apple e un geniu in domeniul lui(britanic de altfel... eleganta britanica e incomparabila). Eu zic sa astepti iPhone 5 fiindca din orgoliu, ar trebui sa schimbe multe chestii la el(pana la urma e alta "generatie", alta cifra). Nu mai e mult pana in vara oricum
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Afiseaza 15 T_T
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Welcome back in business ^^
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nu era in plan acel + xD thx pentru observatie <3
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Deci pur si simplu disper:
def count(s):
d = dict()
for c in s:
d[c] += 1 + d.get(c, 0)
return d
print count(raw_input('Input the string:'))Output:
[20:13 syn@deathstar Python]$ python2 histogram.py
Input the string:lawl
Traceback (most recent call last):
File "histogram.py", line 8, in <module>
print count(raw_input('Input the string:'))
File "histogram.py", line 5, in count
d[c] += 1 + d.get(c, 0)
KeyError: 'l' -
Eu zic ca threadul meu e mai potrivit pentru off-topic decat altele care nu au nici cea mai mica legatura cu domeniul IT ^^. Si din moment ce asemenea intrebare idioata nu e pe forum, de ce sa nu o pun eu ? :\
Ontopic: xpdf nu prea mananca la resurse din cate vad, si deschide chiar foarte bine pdfuri mari... Si imi place ca are functia sa salveze locatia paginii unde inchid. LE: dar e cam rudimentar, but hey, it gets the work done
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Deschisesem acum un PDF huge cu Okular si imi manca aproape tot procul, si m-am gandit sa fac un topic pe tema asta: Care este cel mai bun PDF reader dupa parerea voastra? Dupa parerea mea, evince e cel mai bun in linux, apoi foxit reader ^^
Edit: acum mi-am pus xpdf, pare bun
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This is what's deserved to be called a hack.
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Reputation HH
in Off-topic
Posted
ce plm e hh?