Ext3 On A Very Large Filesystem
May 23, 2008
We're considering deploying a large server that will have 8x 500GB drives in a RAID-10 config. I intend to use a 3ware 9650SE w/ BBU along with A/B power to each of the PSU's.
My question is... since this will return into a 2TB array/partition, in event of a crash (kernel panic, etc -- I expect a power outage will be very, very rare if at all) what do you guys think the fsck time would be? In my experience a RAID BBU significantly drops it, sometimes to the point of no manual fsck required, but in event of a manual fsck shouldn't the BBU be able to provide more consistent data (less errors) and therefore a much shorter fsck? Maybe just recovering the journal?
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Jan 19, 2008
Does writing large files (ie, 10GB backups in one archive) cause any risk of damaging a linux filesystem?
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Jun 13, 2009
have a centos 5.1 box but not sure if i have ext2 or ext3 on the drives? basically trying to disable the file system check if there's a hard boot, which i wouldn't risk if its ext2 but will do if its ext3.
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May 6, 2008
OS: Debian etch
partition type: EXT3
I was unziping from network 4gb file to my server and server crashed. When I got it back up partition has allocated 4gb of space, but there is no file I cannot reallocate it.
/dev/hda6 67G 63G 437M 100% /home
Like you can see above 4gb is allocated but it is not used, so what can i do?
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Apr 24, 2008
what are peoples opinions on running ext3 in writeback journal mode when the filesystem resides on a BBU (battery backup unit) RAID array. The BBU retains data cached on the RAID card, but all the delayed writes from writeback mode may not even have gotten to the RAID card. Am I correct on that logic?
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Jul 25, 2007
I wanted to mount a Usb portable drive of some data I have inside my Linux server and make them read on my Windows xp.
The drive has been formatted as ext3 and it just won't show in "my computer" inside Windows unless I reformat it again as ntfs.
The same turns around if if I format as ntfs, and i can't mount it under linux with the message "mount: unknown file system type 'ntfs'"
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Jun 14, 2007
Our server with raid 10 has had a failed hdd (which was replaced) and a
corrupt ext3 filesystem.
The server is now booted with Knoppix but drives will not mount. All we are trying to at this point is salvage as much data as we can.
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Jun 6, 2009
I currently have a VPS. I have installed cPanel/WHM + CSF Firewall.
Everything is fine and all the ports are closed except for the ones I need.
I currently have some issues I need to fix, but google isn't helping
Quote:
Check /tmp is mounted as a filesystemWARNING/tmp should be mounted as a separate filesystem with the noexec,nosuid options set
I tried googling this and there was a cPanel script but I do not have permission to run it. So does anyone mind explaining it to me one step at a time?
Quote:
You should consider adding ini_set to the disable_functions in the PHP configuration as this setting allows PHP scripts to override global security and performance settings for PHP scripts. Adding ini_set can break PHP scripts and commenting out any use of ini_set in such scripts is advised
I have disabled this in php.ini but I do not know why it still says that I have to fix this
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Feb 26, 2008
I have a server with pacificrack. When I see my website it says "Read-Only File system" and my SSH dies with read-only file system errors.
It happens once per month, and the bad thing is I'm sleeping when it happens so I don't know my server is in this state.
Even though support fixes the problem within 15minutes of my support ticket, my server is down for hours because I don't know its down to then raise a ticket. I asked support why it happens and they never tell me... just tell me to read the logs but I'm not technical enough to understand linux logs etc.
Server is centos.
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Jun 4, 2007
Somehow the filesystem on my server turned read-only. The databases would not connect. When I rebooted the box it would not come up.
Support had to run FSCK. Even after, the databases had to be repaired using the CPanel tool. Things seem to be ok now, however:
1. What could have caused this to happen? Software or hardware failure?
2. I get these notifications, should I be worried?
WARNING: Kernel Errors Present
EXT3-fs error (device sda2): e...: 1 Time(s)
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Nov 12, 2007
i have a problem with my server it wan't boot, i get the following error on /tmp
fsck.ext3 e2fsck_read_bitmaps illegal bitmap block
how can i fix?
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May 30, 2007
I have WHM/cPanel server.
I am installed ConfigServer (Firewall)
On configserver it says " /var/tmp should either be symlinked to /tmp or mounted as a filesystem" how can i do this?
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Jun 17, 2009
kernel: EXT3-fs error (device loop0): ext3_lookup: unlinked inode 12286 in dir #2
kernel: EXT3-fs error (device loop0): ext3_journal_start_sb: Detected aborted journal
EXT3-fs error (device loop0): ext3_lookup: unlinked inode 12286 in dir #2
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Jul 17, 2008
some errors I get on my dedicated server? I also got errors like these when I deleted inside a folder a large number of files and after running every time 'du' it shows kernel errors.
---------
Message from syslogd@ at Wed Jul 16 16:30:26 2008 ...
server kernel: [358873.299439] EIP is at ext3_clear_inode+0x42/0xa0 [ext3]
Message from syslogd@ at Wed Jul 16 16:30:26 2008 ...
server kernel: [358873.299459] eax: d73d9c2c ebx: d73d9b94 ecx: 00000000 e dx: ffff9eff
Message from syslogd@ at Wed Jul 16 16:30:26 2008 ...
server kernel: [358873.299479] esi: d73d9c2c edi: 00000000 ebp: 0000003e e sp: f7f4feb4
Message from syslogd@ at Wed Jul 16 16:30:26 2008 ...
server kernel: [358873.299499] ds: 0068 es: 0068 fs: 00d8 gs: 0000 ss: 006 8
Message from syslogd@ at Wed Jul 16 16:30:26 2008 ...
server kernel: [358873.299520] Process kswapd0 (pid: 162, ti=f7f4e000 task=f79ab 550 task.ti=f7f4e000)
Message from syslogd@ at Wed Jul 16 16:30:26 2008 ...
server kernel: [358873.299540] Stack: d73d9c2c 00000000 f7f4fef0 c01ec2ff f7f4fe f0 d73d9c34 d73d9c2c c01ec65a
Message from syslogd@ at Wed Jul 16 16:30:26 2008 ...
server kernel: [358873.299585] 00000080 de2652b8 00000080 f7f4fef0 c01ec8 a5 00000000 00000080 d73d9e18
Message from syslogd@ at Wed Jul 16 16:30:26 2008 ...
server kernel: [358873.299628] e3c8dc34 0000e54c 00000094 f7ffea80 000000 d0 c01bedfd 0000580f 00000000
Message from syslogd@ at Wed Jul 16 16:30:26 2008 ...
server kernel: [358873.299671] Call Trace:
Message from syslogd@ at Wed Jul 16 16:30:26 2008 ...
server kernel: [358873.299699] [<c01ec2ff>] clear_inode+0x9f/0x150
Message from syslogd@ at Wed Jul 16 16:30:26 2008 ...
server kernel: [358873.299726] [<c01ec65a>] dispose_list+0x1a/0xe0
Message from syslogd@ at Wed Jul 16 16:30:26 2008 ...
server kernel: [358873.299751] [<c01ec8a5>] shrink_icache_memory+0x185/0x260
Message from syslogd@ at Wed Jul 16 16:30:26 2008 ...
server kernel: [358873.299779] [<c01bedfd>] shrink_slab+0x11d/0x180
Message from syslogd@ at Wed Jul 16 16:30:26 2008 ...
server kernel: [358873.299812] [<c01bf27a>] kswapd+0x35a/0x450
Message from syslogd@ at Wed Jul 16 16:30:26 2008 ...
server kernel: [358873.299849] [<c0195d80>] autoremove_wake_function+0x0/0x50
Message from syslogd@ at Wed Jul 16 16:30:26 2008 ...
server kernel: [358873.299880] [<c01bef20>] kswapd+0x0/0x450
Message from syslogd@ at Wed Jul 16 16:30:26 2008 ...
server kernel: [358873.299900] [<c0195bca>] kthread+0xba/0xf0
Message from syslogd@ at Wed Jul 16 16:30:26 2008 ...
server kernel: [358873.299921] [<c0195b10>] kthread+0x0/0xf0
Message from syslogd@ at Wed Jul 16 16:30:26 2008 ...
server kernel: [358873.299945] [<c015f6e7>] kernel_thread_helper+0x7/0x10
Message from syslogd@ at Wed Jul 16 16:30:26 2008 ...
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Oct 5, 2008
I'm currently connecting one of my servers to an iSCSI SAN but would like to hook up another server to that target as well. However, this doesn't work with NTFS filesystem and I couldn't really find any windows solutions for that. Does anyone have experience with this?
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Mar 16, 2007
My /etc/fstab:
Code:
# cat /etc/fstab
# This file is edited by fstab-sync - see 'man fstab-sync' for details
LABEL=/1 / ext3 defaults,usrquota 1 1
LABEL=/boot /boot ext3 defaults 1 2
none /dev/pts devpts gid=5,mode=620 0 0
none /dev/shm tmpfs rw,noexec,nosuid,nodev 0 0
none /proc proc defaults 0 0
none /sys sysfs defaults 0 0
LABEL=SWAP-sda2 swap swap defaults 0 0
/dev/sdb1 /backups ext3 defaults 1 2
Code:
# /scripts/fixquotas
Installing Default Quota Databases...../aquota.user..../quota.user..../boot/aquota.user..../boot/quota.user..../backups/aquota.user..../backups/quota.user.....Done
Quotas are now on
Updating Quota Files......
quotacheck: Can't find filesystem to check or filesystem not mounted with quota option.
quotacheck: Can't find filesystem to check or filesystem not mounted with quota option.
....Done
AND
root@srv01 [/www/logs]# /scripts/initquotas
Quotas are now on
Updating Quota Files......
quotacheck: Can't find filesystem to check or filesystem not mounted with quota option.
quotacheck: Can't find filesystem to check or filesystem not mounted with quota option.
....Done
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Dec 29, 2007
I am in the process of configuring my volumedrive dedicated server and would like some input on ideal settings for my filesystem.
I'd appreciate suggestions and explanations of what they options do.
Here is my system info:
Linux volumedrive.com 2.6.18-53.el5 #1 SMP Mon Nov 12 02:14:55 EST 2007 x86_64 x86_64 x86_64 GNU/Linux
CentOS release 5 (Final)
AMD Sempron64 3000+
1GB RAM
HDD:
Location: SCSI device B
Cylinders: 60801
Size: 465.76 GB
Model: ATA ST3500320AS
Seagate Barracuda 7200.11 ST3500320AS 500GB 7200 RPM
32MB Cache SATA 3.0Gb/s Hard Drive
Parameters I can change:
EXT 3 File System Configuration Options:
Block size
Fragment size
Bytes per inode
Reserved blocks
Journal file size
Edit IDE Parameters
Transfer mode: Default mode / Disable IORDY / PIO mode 1,2,3,4 / Multimode DMA 0,1,2 / Ultra DMA 0,1,2
Using DMA: On/Off
Sector count: 256
Read-lookahead: On/Off
Write caching: On/Off
Interrupt unmask: On/Off
Keep settings over reset: On/Off
Keep features over reset: On/Off
Read only: On/Off
Reprogram best PIO: On/Off
Standby timeout: 0
32-bit I/O support: Disable / Enable / Enable with special sync sequence
Sector count for multiple sector I/O: Disable 2 4 8 16 32
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Feb 19, 2007
i had to do a file system back up because of the size of my database.
i shutdown postmaster and tar'd the files.
i recently reloaded my OS and now i'm attempting to restore the backups. i first shut down postmaster, restored the backups to the data folder and restarted postmaster.
i then su'd from root to postgres user:
Code:
[postgres@austin1 pgsql]$ psql service_2_3
psql: FATAL: database "service_2_3" does not exist
DETAIL: The database subdirectory "base/16385" is missing.
the backups had a database named service_2_3 but upon restoring the backups, it doesn't seem to be available.
my data directory is /var/pgsql/data.
Code:
[postgres@austin1 pgsql]$ ls -lahR /var/pgsql/ | grep 16385
but that yielded nothing.
have i done something wrong while backing up? i don't think i have since i followed the postgres manual when backing up. but the administrators have not been very thorough with how they've set the system up for me.
how i can resolve this issue if you have the time.
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Jul 31, 2007
Code:
Installing package webmin-1.350-1 needs 1 inodes on the / filesystem
Hmm, this is the first time I've encountered this error when installing Webmin and I have no idea what it means. My other servers doesnn't output this error.
What does it means by it needs 1 inodes on the filesystem?
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Jul 25, 2008
i have a 32 GB hdd the results of df command are:
df -h
Filesystem Size Used Avail Use% Mounted on
/dev/sda3 32G 29G 715M 98% /
/dev/sda1 99M 14M 81M 15% /boot
tmpfs 1.5G 0 1.5G 0% /dev/shm
so there are 29GB used
but the du command shows only 19GB used:
du -hs /
19G /
where are the remaining 10GB from 19GB to 29GB?
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Apr 5, 2007
I'm having a lengthy issue where my databases are to large to import in phpmyadmin using plesk. Unfortunately I dont have direct access to phpmyadmin and can only access it by DB user through plesk.
I have tried to edit php.ini in the following locations:
upload_max_filesize = changed this to 64M
post_max_size = changed this to 32M
maximum_execution_time = changed this to 300
maximum_input_time = changed this to 300
Why am I still not able to import my DB's which are about 8MB each?
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Oct 2, 2009
what type of hosting do use big sites like Deviantart, or any kind of site with a lot of Gb or Tb. and how much it costs?
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May 20, 2008
I have a website which has about 20K users, and now I am using VPS plan at LunarPages.
However, I have encountered a trouble of out-of-memory. Although I have configured my Apache and MySQL carefully, the 512M memory is not enough. Therefore, the users' expirence is not good these days because my site is very unstable.
I contacted Lunarpages, asking them whether I can upgrade my VPS to bigger RAM, but they said the ONLY way to get a RAM bigger than 512M is to upgrade to dedicated hosting plan.
The following are some stats of my website:
Total Members: 20k
Online at the same time: max 600, average 300
The Lunarpages VPS plan:
www[dot]lunarpages[dot]com/virtual-private-server/
disk space: 20G
RAM: 512M
price: $42 / mo
Now I am not sure whether to migrate to didicated hosting plan, because currently, the main problem is just the size of RAM. Other resources e.g (CPU, network etc. ) are not my bottleneck. So I think it seems not worthwhile for me to migrate to the dedicated hosting plan with a doubled price (even more, almost 3x if I need 1G RAM), just for a larger size of RAM.
Can you guys give some suggestions to choose a VPS provider for my site?
The factors taken into my consideration include:
* RAM size: at least (1G for peak, 768M garantee). The bigger, the better. Nice if can choose larger size when needed.
* price
* bandwidth: 1T/mon?
* easy to upgrade to dedicated host: just in case that one day I will have to use dedicated.
* whether there are coupons for a lower price.
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May 22, 2007
I've been with zone.net for a couple months now, and I have a guaranteed 512MB of memory, which I seem to constantly be hitting, which seems to result in processes being killed and http access vanishing. Growing quite annoying.
I'm looking into moving onto a new provider that can provide more guaranteed RAM for about the same price.
Space isn't a huge deal, I'd do fine with a meager 5GB. Bandwidth I need at least 200GB, but wouldn't mind more.
I'd like to stay managed if possible, as I'm not as well versed in server workings as I should be. Also am in need of cPanel, which I know is a spendy sucker.
My budget is something around $70 a month, and I don't really want to go much higher than that. Still a poor college boy :/
Can anyone suggest such a provider? I've browsed around a lot of the VPS hosts but can't seem to find one that has as much RAM as I need for a decent price. All the ones that seem to have 512MB+ are pretty expensive, and offer a lot more other stuff (space/bandwidth) than I need.
As a final note, the line speed isn't that big of a deal. I'm currently on a 3mbit and am surviving, but going back to a higher speed line would be great
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Jan 17, 2007
Just had a quick question about backing up a large MySQL DB. I have a database that is 50gb with about half a billion entries in it. One table itself is about 40gb, the other 10gb consists of smaller tables.
The problem is, I want to back the database up and be able to keep it LIVE at the same time (as it will fall behind quickly if it's pulled for more than a few hours, as there are somewhere in the area of a million entries an hour, plus other deletions and queries).
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May 30, 2007
I'm currently using iptables to ban IP addresses from the servers, like:
Code:
iptables -A INPUT -s xxx.xxx.xxx.xxx -j DROP
I ran a "spam trap" for the last few months and now I have over 11000 IP addresses who were trying to spam on my website (guestbooks, phpBB and forms) and I want to ban them all (pretty sure bots run from them).
My question - is iptables the way to do it? I mean does banning such a large number of addresses have any significant performance or other issues I should be aware of (except of the fact I may be banning some legitimate traffic)? Is the -A INPUT the way to ban them all or is there a more appropriate way of baning such a number of addresses?
I'm on CentOS 4.5 i686, Apache/1.3.37, Pentium D 930, 2GB RAM.
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Feb 2, 2008
I wasn't sure where to post this so here goes, I need to migrate a MySQL DB, in the past I have just created an SQL file and used that method (sometimes having to split the SQL file up) but now the DB is about 50 meg and 733,233 records.
Is there an easier way to migrate the Database from one server to another?
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Apr 5, 2009
I'm trying to find a server that can offer about 7-8 TB with 6-8 GB of ram. Does anyone know a good provider?
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Mar 28, 2009
any recommendation for a good e-mail service (IMAP) for large accounts? between 5 and 10GB each?
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Mar 9, 2009
I'm selling downloads of music files. The zip files are quite large. I've had several people complain that they get a message that the server resets their connection before the download finishes.
What can I do to allow these large downloads?
I'm on IIS.
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