[CentOS] Failing Hard Disk?
Hi All,
I am fairly certain that this disk is failing in my server, and I am
replacing it straight away anyway.
However, I'd appreciate the views of the list just to be sure as I value
your opinion(s).
I got these errors, once only so far, in /var/log/messages. This disk
has / on it.
Oct 5 08:34:47 server1 kernel: ata1.00: exception Emask 0x0 SAct 0x7
SErr 0x0 action 0x0
Oct 5 08:34:47 server1 kernel: ata1.00: irq_stat 0x4001
Oct 5 08:34:47 server1 kernel: ata1.00: cmd
60/f8:00:b9:1e:71/00:00:14:00:00/40 tag 0 ncq 126976 in
Oct 5 08:34:47 server1 kernel: res
41/40:00:40:1f:71/a0:00:14:00:00/00 Emask 0x409 (media error) F
Oct 5 08:34:47 server1 kernel: ata1.00: status: { DRDY ERR }
Oct 5 08:34:47 server1 kernel: ata1.00: error: { UNC }
Oct 5 08:34:47 server1 kernel: ata1.00: cmd
60/08:08:b1:1f:71/00:00:14:00:00/40 tag 1 ncq 4096 in
Oct 5 08:34:47 server1 kernel: res
41/04:f8:40:1f:71/00:00:14:00:00/00 Emask 0x1 (device error)
Oct 5 08:34:47 server1 kernel: ata1.00: status: { DRDY ERR }
Oct 5 08:34:47 server1 kernel: ata1.00: error: { ABRT }
Oct 5 08:34:47 server1 kernel: ata1.00: cmd
60/00:10:b9:1f:71/01:00:14:00:00/40 tag 2 ncq 131072 in
Oct 5 08:34:47 server1 kernel: res
41/04:f8:40:1f:71/00:00:14:00:00/00 Emask 0x1 (device error)
Oct 5 08:34:47 server1 kernel: ata1.00: status: { DRDY ERR }
Oct 5 08:34:53 server1 kernel: ata1.00: error: { ABRT }
Oct 5 08:34:54 server1 kernel: ata1.00: configured for UDMA/133
Oct 5 08:34:58 server1 kernel: ata1: EH complete
Oct 5 08:35:02 server1 kernel: SCSI device sda: 488397168 512-byte hdwr
sectors (250059 MB)
Oct 5 08:35:06 server1 kernel: sda: Write Protect is off
Oct 5 08:35:13 server1 kernel: SCSI device sda: drive cache: write through
I am also getting these errors every 30 minutes:
Oct 5 06:22:06 server1 smartd[3118]: Device: /dev/sda, 12 Offline
uncorrectable sectors
Below is the smart selftest log:
smartctl version 5.38 [x86_64-redhat-linux-gnu] Copyright (C) 2002-8
Bruce Allen
Home page is http://smartmontools.sourceforge.net/
=== START OF INFORMATION SECTION ===
Device Model: GB0250C8045
Serial Number:9SF0H82R
Firmware Version: HPG2
User Capacity:250,059,350,016 bytes
Device is:Not in smartctl database [for details use: -P showall]
ATA Version is: 7
ATA Standard is: ATA/ATAPI-7 T13 1532D revision 4a
Local Time is:Tue Oct 6 18:58:31 2009 BST
SMART support is: Available - device has SMART capability.
SMART support is: Enabled
=== START OF READ SMART DATA SECTION ===
SMART overall-health self-assessment test result: PASSED
General SMART Values:
Offline data collection status: (0x82) Offline data collection activity
was completed without error.
Auto Offline Data Collection: Enabled.
Self-test execution status: ( 121) The previous self-test completed
having
the read element of the test failed.
Total time to complete Offline
data collection: ( 625) seconds.
Offline data collection
capabilities:(0x7b) SMART execute Offline immediate.
Auto Offline data collection on/off
support.
Suspend Offline collection upon new
command.
Offline surface scan supported.
Self-test supported.
Conveyance Self-test supported.
Selective Self-test supported.
SMART capabilities:(0x0003) Saves SMART data before entering
power-saving mode.
Supports SMART auto save timer.
Error logging capability:(0x01) Error logging supported.
General Purpose Logging supported.
Short self-test routine
recommended polling time:( 2) minutes.
Extended self-test routine
recommended polling time:( 58) minutes.
Conveyance self-test routine
recommended polling time:( 3) minutes.
SCT capabilities: (0x103f) SCT Status supported.
SCT Feature Control supported.
SCT Data Table supported.
SMART Attributes Data Structure revision number: 10
Vendor Specific SMART Attributes with Thresholds:
ID# ATTRIBUTE_NAME FLAG VALUE WORST THRESH TYPE
UPDATED WHEN_FAILED RAW_VALUE
1 Raw_Read_Error_Rate 0x000f 062 061 044Pre-fail Always
- 173060773
3 Spin_Up_Time0x0003 099 099 000Pre-fail Always
- 0
4 Start_Stop_Count0x0032 100 100 020Old_age Always
- 17
5 Reallocated_Sector_Ct 0x0033 089 089 036Pre-fail Always
- 243
Re: [CentOS] problem with installing centos 5.3 on sata ahci
Maciej Jan Broniarz wrote: Hello, I am trying to install Centos on sata ahci. The installer first waits few minutes while loading ahci module. Then, the installer cannot detect any disk during the partitioning phase. What might be the problem? I have switched to IDE in bios and it still is the same. Best regards, mjb Try adding pci=nomsi to the end of the kernel line from the grub menu. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] rescan usb hd
Quoting Yves Bellefeuille y...@storm.ca: On Tuesday 22 September 2009 18:59, William L. Maltby wrote: On Tue, 2009-09-22 at 22:16 +0100, Stewart Williams wrote: What does 'sdparm -a /dev/sdc' yield? And what make/model is the disk? On 5.3 # sdparm -a /dev/sdc -bash: sdparm: command not found He meant hdparm, I think. -- Yves Bellefeuille y...@storm.ca Yves Bellefeuille: Eterna malvenkanto en UEA -- Heroldo Komunikas, n-ro 389 No I definitely mean't sdparm, it's available from RPMForge and it's different from hdparm. [stew...@# ~]$ whatis sdparm sdparm (8) - access SCSI modes pages; read VPD pages; send simple SCSI commands sdparm (rpm) - List or change SCSI disk parameters [stew...@# ~]$ whatis hdparm hdparm (8) - get/set hard disk parameters hdparm (rpm) - A utility for displaying and/or setting hard disk parameters. [stew...@# ~]$ sudo yum whatprovides */sdparm ... sdparm-1.03-1.el5.rf.x86_64 : List or change SCSI disk parameters Matched from: Filename: /usr/bin/sdparm ... [stew...@# ~]$ sudo /usr/bin/sdparm -a /dev/sde Password: /dev/sde: MaxtorOneTouch 0125 Power condition mode page: IDLE0 [cha: n, def: 0, sav: 0] STANDBY 0 [cha: y, def: 1, sav: 0] ICT 0 [cha: n, def: 0, sav: 0] SCT 4294967286 [cha: y, def:9000, sav:4294967286] The 'STANDBY' condition is what were interested in. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] rescan usb hd
William L. Maltby wrote: Power condition - old version mode page: warning: mode page seems malformed The page number field should be 0x0d, but is 0x05 IDLE-OLD0 [cha: n, def: 0, sav: 0] STBY-OLD0 [cha: n, def: 0, sav: 0] ICT-OLD 272564736 [cha: y, def:272564736, sav:272564736] SCT-OLD 1073676288 [cha: y, def:1073676288, sav:1073676288] Power condition mode page: warning: mode page seems malformed The page number field should be 0x1a, but is 0x05 IDLE0 [cha: n, def: 0, sav: 0] STANDBY 0 [cha: n, def: 0, sav: 0] ICT 272564736 [cha: y, def:272564736, sav:272564736] SCT 1073676288 [cha: y, def:1073676288, sav:1073676288] From those results, it doesn't look like your problem is a power issue. _Unless_ the drive itself has a fault. But that doesn't sound like the case, as it's fine on your other box. Maybe a problem with your USB port that you are plugging it into? Try another drive or USB device (e.g. USB flash drive) in the same port to see if you get any errors. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] rescan usb hd
William L. Maltby wrote: On Mon, 2009-09-21 at 17:05 -0700, Bazooka Joe wrote: I have a usb hd that I use for backup. Occasionally it dies. scsi 6:0:0:0: rejecting I/O to dead device scsi 6:0:0:0: rejecting I/O to dead device scsi 6:0:0:0: rejecting I/O to dead device scsi 6:0:0:0: rejecting I/O to dead device Buffer I/O error on device sdc1, logical block 0 lost page write due to I/O error on sdc1 EXT2-fs error (device sdc1): read_inode_bitmap: Cannot read inode bitmap - block_group = 129, inode_bitmap = 4227073 scsi 6:0:0:0: rejecting I/O to dead device scsi 6:0:0:0: rejecting I/O to dead device scsi 6:0:0:0: rejecting I/O to dead device Buffer I/O error on device sdc1, logical block 0 lost page write due to I/O error on sdc1 EXT2-fs error (device sdc1): ext2_readdir: bad page in #2 scsi 6:0:0:0: rejecting I/O to dead device scsi 6:0:0:0: rejecting I/O to dead device Buffer I/O error on device sdc1, logical block 0 lost page write due to I/O error on sdc1 EXT2-fs error (device sdc1): ext2_get_inode: unable to read inode block - inode=2, block=1027 scsi 6:0:0:0: rejecting I/O to dead device scsi 6:0:0:0: rejecting I/O to dead device Buffer I/O error on device sdc1, logical block 0 lost page write due to I/O error on sdc1 EXT2-fs error (device sdc1): ext2_readdir: bad page in #2 If i unmount it and try to remount it it says sdc1 does not exist. It may not be the USB drive. I have one that daoe the same, usually only after long periods oh high (in)activity. On another node, no problems ever using that same drive. On the system with the problem, CentOS 4.7, Via Kt-400A chipset. One the other system, Centos 5.3, Via KT-880 chipset. I've not bothered to google yet, since it seems to occur after leaving it attached for long periods and what I do doesn't take long Maybe there's a clue? This can happen if the drive has power-saving features and it's gone to sleep after no activity. What does 'sdparm -a /dev/sdc' yield? And what make/model is the disk? ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Can not remind my password for mailing list
Alexander Bykov wrote: Password reminder dont work. No mail in my inbox:((( Is there any other method to unsubscribe via email? Sending a message to centos-unsubscr...@centos.org should work. You should receive an e-mail asking you to confirm your request. Just reply to the message leaving the subject line intact. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Slow network
nate wrote: cen...@911networks.com wrote: Hi, I have problem with a Centos 5.3 computer. The networking is very slow. The networking card is a RealTek 1GigE. Get a better NIC, Realtek is absolute crap. CentOS is an enterprise grade OS, use an enterprise grade NIC such as Intel or Broadcom. nate +1 What chipset are they? I've had poor results with cards featuring the 8169 chip. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
[CentOS] Rsync, SSH and authorized_keys problem
Hi, I'm trying to backup from one machine to the other (automatically via cron) using rsync and ssh password-less public key authentication. I having been trying to set this up following an article in a Linux magazine[1] by only allowing the specific rsync command to run on the remote box. I am using the following rsync command: $ rsync -avz -e ssh -i ~/.ssh/backup-key /backup stew...@name.of.remote.server:/backup This runs, connects using keys asking for no password and completes successfully until I add the above command to my authorized_keys file on the remote box: command=rsync -avz -e ssh -i ~/.ssh/backup-key /backup stew...@name.of.remote.server:/backup ssh-dss ... key ... The client then says it cannot find the key, so the connection fails. Is it because it's trying to find the private key in the ~/.ssh directory on the remote box? Is the article wrong? Or am I doing something wrong? Should I use the $SSH_ORIGINAL_COMMAND variable? Regards, Stewart Williams [1] http://www.linuxformat.com/pdfs/download.php?PDF=LXF105.tut_backup.pdf ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Rsync, SSH and authorized_keys problem
Tom Brown wrote: command=rsync -avz -e ssh -i ~/.ssh/backup-key /backup stew...@name.of.remote.server:/backup ssh-dss ... key ... which user is doing this as maybe the env of that user in cron is not the same as when logged in using a shell ? It's the same user, I haven't added the cron job yet. That's just what I intend on doing, at the moment I am having this problem from the shell. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Rsync, SSH and authorized_keys problem
nate wrote: Stewart Williams wrote: Hi, I'm trying to backup from one machine to the other (automatically via cron) using rsync and ssh password-less public key authentication. I having been trying to set this up following an article in a Linux magazine[1] by only allowing the specific rsync command to run on the remote box. I am using the following rsync command: $ rsync -avz -e ssh -i ~/.ssh/backup-key /backup stew...@name.of.remote.server:/backup This runs, connects using keys asking for no password and completes successfully until I add the above command to my authorized_keys file on the remote box: command=rsync -avz -e ssh -i ~/.ssh/backup-key /backup stew...@name.of.remote.server:/backup ssh-dss ... key ... I think your issue is the command your specifying is only what is run on the client end, not on the server end. the server runs rsync-server, e.g. from one of my rsync servers: logrsync 5244 0.0 0.0 2152 256 ?S14:03 0:00 rsync --server -vltpre.is --timeout=600 . /nfs/exnas/root/pixelserverlogs/transferlogs/pd3-bgas09// the command I executed on the client is much, much bigger. rsync -rlptve /usr/bin/hpnssh -v -o TcpRcvBufPoll=yes -o NoneEnabled=yes -o NoneSwitch=yes --timeout=600 --files-from=/home /logrsync/jobs/rsync_list_00 --log-format=[%p] %t %o %f (%l/%b) /var/xrt/pickup logrs...@pd3-dc01rsync-vip.pod.xxx.net: /nfs/exnas/root/pixelserverlogs/PD3-BGAS09// /home/logrsync/logs/rsync_worker_00_20090616_153501.log 21 There may be other commands that are executed as well as part of the file sync process other than rsync-server. I suggest if your really paranoid about only allowing file transfers then use the rsync protocol itself. You can encrypt it via a VPN or a ssl tunneling app like stunnel if you want. For me I am happy with just locking the system down so only ssh keys are allowed to login. don't feel the need to try to lock down what keys a particular app can use. And even if I did it wouldn't work since there are about 120 systems that share the same private key to upload and download data to different locations(couple TB of data transferred per day). nate ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos I am the only user with shell access to these systems and they are on a private network, so maybe I am going a bit OTT. :) ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Rsync, SSH and authorized_keys problem
Filipe Brandenburger wrote: Hi, On Tue, Jun 16, 2009 at 17:10, Filipe Brandenburgerfilbran...@gmail.com wrote: On Tue, Jun 16, 2009 at 16:59, Stewart Williamsli...@pinkyboots.co.uk wrote: command=rsync -avz -e ssh -i ~/.ssh/backup-key /backup stew...@name.of.remote.server:/backup ssh-dss ... key ... You actually have to include the command that rsync will call on the server side, not the command you use to call rsync on the client side... If you add -v to the SSH command line on the client: $ rsync -avz -e ssh -v -i ... It will print something like this: debug1: Sending command: rsync --server -vlogDtprze.is . /backup That is the exact string you should add to command= on the authorized_keys file on the other end. HTH, Filipe Thank you Filipe, I will try this and let you know if it works. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
[CentOS] yum-updatesd no longer working
I recently enabled yum-updatesd on two identical servers and configured it to notify me of updates via e-mail. This worked fine to start with and it notified me on both machines when the kernel-2.6.18-128.1.10.el5.x86_64.rpm update was released last week. However, today I realised that yum-updatesd was not running and thought it was due to rebooting after the kernel update and that I'd forgotten to set it to start at boot. But this was not the case, it is set to start, however running '/sbin/service yum-updatesd start' yields: yum-updatesd dead but subsys locked I have tried removing /var/lock/subsys/yum-updatesd, but when I restart the service it says [OK] and yum-updatesd doesn't run, but the lock file is re-created. yum-updatesd --debug does not help either. Any help or idea's greatly appreciated. Thanks ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] tty login hangs
Richard Karhuse wrote: From: Stewart Williams li...@pinkyboots.co.uk Sometimes (more often than not) when I log in at the physical console (e.g. tty1, tty2, etc.) I will be logged in and it stops responding even if the shell is not doing anything. When this happens I can still switch to another VT with alt+f2 and login as normal. I don't know if bash, mingetty or whatever process is locking up. If I I assume that you've tried typing Ctl+Q -- just in case of flow control, yes/no? -rak- No I haven't tried this. I will let you know if it works. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] tty login hangs
John Doe wrote: From: Stewart Williams li...@pinkyboots.co.uk Sometimes (more often than not) when I log in at the physical console (e.g. tty1, tty2, etc.) I will be logged in and it stops responding even if the shell is not doing anything. When this happens I can still switch to another VT with alt+f2 and login as normal. I don't know if bash, mingetty or whatever process is locking up. If I Maybe try an strace on the shell to see on what it is stuck... JD I'll do this when it happens again, but it's been OK for a while. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
[CentOS] tty login hangs
Hi all, I have two servers both identical in hardware and I have just done a clean install of CentOS 5.2 x86_64 on both. Sometimes (more often than not) when I log in at the physical console (e.g. tty1, tty2, etc.) I will be logged in and it stops responding even if the shell is not doing anything. When this happens I can still switch to another VT with alt+f2 and login as normal. I don't know if bash, mingetty or whatever process is locking up. If I do a `ps ax` all processes are sleeping. Any idea's what could cause this? Thanks ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Poor RAID performance new Xeon server?
John R Pierce wrote: Stewart Williams wrote: John R Pierce wrote: Stewart Williams wrote: The block I/O is the thing that concerns me as mostly I am serving a 650MB file via samba to 5 clients and I think this is where I need the speed. is this a sequential or random access application thats using this file? is it read only/mostly, or is it random update? I'm not sure, how can I find this out? well, what is the nature of the application thats using this file? do you really mean just a single 650MB (sub 1GB) file? is this something like a quickbooks file? (thats kind of what it sounds like from your other answers). given what you have now, and what information we've been given, I would A) disable BIOS raid, configuring it for JBOD w/ ACHI enabled B) mdadm mirror disks 0 and 1, and put the OS on that C) mdadm mirror disks 2 and 3, and put your shared SMB filesystem on that I disabled RAID in the BIOS (with SATA native mode set to auto), and the CentOS install runs fine to start with, then I setup my RAID configuration in disk-druid, continue and the system virtually grinds to a halt when it get's to the formating filesytem stage; the progress bar goes up a little then stops. The mouse cursor moves and the disk light flashes frequently but nothing is happening (even after hours). I can't switch to a debugging VT as the system is so un-responisve. However, if I enable the RAID in the BIOS again, and proceed with the above, the install finishes fine. Upon POST it says 4 drives JBOD. The only thing that concerns me is that the drives are running at best speeds and not in PIO mode as William stated. I assume as I have created the array with mdadm and not HP's config utility that this is not the case, but just want some clarification. CentOS loads the ahci driver and it looks OK to me. Here is my dmesg output: scsi0 : ahci scsi1 : ahci scsi2 : ahci scsi3 : ahci ata1: SATA max UDMA/133 abar m2...@0xec000800 port 0xec000900 irq 233 ata2: SATA max UDMA/133 abar m2...@0xec000800 port 0xec000980 irq 233 ata3: SATA max UDMA/133 abar m2...@0xec000800 port 0xec000a00 irq 233 ata4: SATA max UDMA/133 abar m2...@0xec000800 port 0xec000a80 irq 233 ata1: SATA link up 1.5 Gbps (SStatus 113 SControl 300) ata1.00: ATA-7: GB0250C8045, HPG1, max UDMA/133 ata1.00: 488397168 sectors, multi 16: LBA48 NCQ (depth 31/32) ata1.00: configured for UDMA/133 ata2: SATA link up 3.0 Gbps (SStatus 123 SControl 300) ata2.00: ATA-7: MAXTOR STM3250310AS, 4.AAA, max UDMA/133 ata2.00: 488397168 sectors, multi 16: LBA48 NCQ (depth 31/32) ata2.00: configured for UDMA/133 ata3: SATA link up 1.5 Gbps (SStatus 113 SControl 300) ata3.00: ATA-7: MAXTOR STM3250310AS, 3.AAF, max UDMA/133 ata3.00: 488397168 sectors, multi 16: LBA48 NCQ (depth 31/32) ata3.00: configured for UDMA/133 ata4: SATA link up 3.0 Gbps (SStatus 123 SControl 300) ata4.00: ATA-7: MAXTOR STM3250310AS, 4.AAA, max UDMA/133 ata4.00: 488397168 sectors, multi 16: LBA48 NCQ (depth 31/32) ata4.00: configured for UDMA/133 Also, it shows 2 of the ports are running as 3.0Gbps (which is strange as I thought all of the ports on the mainboard were the same 1.5Gbps speed) The 3 maxtor drives were purchased as SATA2 spec. Is there a way to tell what ata?.00 corresponds to sd[a-d]? So that I can RAID the 2 faster drives together. Or does the kernel assign in order (e.g. ata2.00 = sdb)? Or won't it make much difference? Thanks Stewart ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Poor RAID performance new Xeon server?
John R Pierce wrote: Stewart Williams wrote: I have just purchased an HP ProLiant HP ML110 G5 server and install ed CentOS 5.2 x86_64 on it. It has the following spec: Intel(R) Xeon(R) CPU 3065 @ 2.33GHz 4GB ECC memory 4 x 250GB SATA hard disks running at 1.5GB/s Onboard RAID controller is enabled but at the moment I have used mdadm to configure the array. RAID bus controller: Intel Corporation 82801 SATA RAID Controller that is essentially desktop grade disk IO For a simple striped array I ran: # mdadm --create /dev/md0 --level=0 --raid-devices=2 /dev/sdb1 /dev/sdc1 # mke2fs -j /dev/md0 # mount -t ext3 /dev/md0 /mnt Attached are the results of 2 bonnie++ tests I made to test the performance: # bonnie++ -s 256m -d /mnt -u 0 -r 0 and # bonnie++ -s 1g -d /mnt -u 0 -r 0 I also tried 3 of the drives in a RAID 5 setup with gave similar results. Is it me or are the results poor? Is this the best I can expect from the hardware or is something wrong? I would appreciate any advice or possible tweaks I can make to the system to make the performance better. The block I/O is the thing that concerns me as mostly I am serving a 650MB file via samba to 5 clients and I think this is where I need the speed. is this a sequential or random access application thats using this file? is it read only/mostly, or is it random update? I'm not sure, how can I find this out? its rather hard to read your bonnie output logs as they aren't very columnar. but it appears the sequetial read speed at least is really high. i'm seeing 55MB/sec random(block) and 1.4GB/sec sequential reads on the 1GB file, Correct. so I dunno what your issues are... of course, a 1GB file sits entirely in the system cache assuming a reasonable amount of otherwise idle memory I'm not sure whether the performance would suffice as I've not tried putting it in production. I am going to benchmark the old server (currently in production) that this is replacing. Thanks, Stewart ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Poor RAID performance new Xeon server?
William Warren wrote: Stewart Williams wrote: I have just purchased an HP ProLiant HP ML110 G5 server and install ed CentOS 5.2 x86_64 on it. It has the following spec: Intel(R) Xeon(R) CPU 3065 @ 2.33GHz 4GB ECC memory 4 x 250GB SATA hard disks running at 1.5GB/s Onboard RAID controller is enabled but at the moment I have used mdadm to configure the array. RAID bus controller: Intel Corporation 82801 SATA RAID Controller For a simple striped array I ran: # mdadm --create /dev/md0 --level=0 --raid-devices=2 /dev/sdb1 /dev/sdc1 # mke2fs -j /dev/md0 # mount -t ext3 /dev/md0 /mnt Attached are the results of 2 bonnie++ tests I made to test the performance: # bonnie++ -s 256m -d /mnt -u 0 -r 0 and # bonnie++ -s 1g -d /mnt -u 0 -r 0 I also tried 3 of the drives in a RAID 5 setup with gave similar results. Is it me or are the results poor? Is this the best I can expect from the hardware or is something wrong? I would appreciate any advice or possible tweaks I can make to the system to make the performance better. The block I/O is the thing that concerns me as mostly I am serving a 650MB file via samba to 5 clients and I think this is where I need the speed. Plus I am hoping to run some virtualised guests on it eventually, but nothing too heavy. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos That onbard raid is fakeraid..so when you dialup raid 5 you effectivly put hte hdd's in pio mode since ALL data has to be routed through your cpu. Please get a raid card from HP or go get a 3ware card so you ahve real hardware raid. fake and real raid chpsets: http://linuxmafia.com/faq/Hardware/sata.html Why using fakeraid at all is bad: http://thebs413.blogspot.com/2005/09/fake-raid-fraid-sucks-even-more-at.html MDM under linux is kernel raid that does not use a binary driver..however you don't want to do ANY software raid 5. Thanks William, I am no expert on RAID, so you have opened my eyes to somethings I wasn't aware of. I am considering disabling the onboard RAID in the BIOS and re-installing CentOS and configuring the 4 drives as RAID 10 just to see what the performance is like. Or I may purchase a card as you advise. Would I benefit from buying a SCSI/or SAS card and drives for my requirements? Basically the main role of the machine is to serve a ~600MB file via samba to 5 Windows XP cient PC's on a gigabit network. Stewart ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Poor RAID performance new Xeon server?
Ross Walker wrote: On Jan 11, 2009, at 10:13 AM, Stewart Williams li...@pinkyboots.co.uk wrote: William Warren wrote: Stewart Williams wrote: I have just purchased an HP ProLiant HP ML110 G5 server and install ed CentOS 5.2 x86_64 on it. It has the following spec: Intel(R) Xeon(R) CPU 3065 @ 2.33GHz 4GB ECC memory 4 x 250GB SATA hard disks running at 1.5GB/s Onboard RAID controller is enabled but at the moment I have used mdadm to configure the array. RAID bus controller: Intel Corporation 82801 SATA RAID Controller For a simple striped array I ran: # mdadm --create /dev/md0 --level=0 --raid-devices=2 /dev/sdb1 / dev/sdc1 # mke2fs -j /dev/md0 # mount -t ext3 /dev/md0 /mnt Attached are the results of 2 bonnie++ tests I made to test the performance: # bonnie++ -s 256m -d /mnt -u 0 -r 0 and # bonnie++ -s 1g -d /mnt -u 0 -r 0 I also tried 3 of the drives in a RAID 5 setup with gave similar results. Is it me or are the results poor? Is this the best I can expect from the hardware or is something wrong? I would appreciate any advice or possible tweaks I can make to the system to make the performance better. The block I/O is the thing that concerns me as mostly I am serving a 650MB file via samba to 5 clients and I think this is where I need the speed. Plus I am hoping to run some virtualised guests on it eventually, but nothing too heavy. --- --- -- ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos That onbard raid is fakeraid..so when you dialup raid 5 you effectivly put hte hdd's in pio mode since ALL data has to be routed through your cpu. Please get a raid card from HP or go get a 3ware card so you ahve real hardware raid. fake and real raid chpsets: http://linuxmafia.com/faq/Hardware/sata.html Why using fakeraid at all is bad: http://thebs413.blogspot.com/2005/09/fake-raid-fraid-sucks-even-more-at.html MDM under linux is kernel raid that does not use a binary driver..however you don't want to do ANY software raid 5. Thanks William, I am no expert on RAID, so you have opened my eyes to somethings I wasn't aware of. I am considering disabling the onboard RAID in the BIOS and re-installing CentOS and configuring the 4 drives as RAID 10 just to see what the performance is like. Or I may purchase a card as you advise. Would I benefit from buying a SCSI/or SAS card and drives for my requirements? Basically the main role of the machine is to serve a ~600MB file via samba to 5 Windows XP cient PC's on a gigabit network. If all your doing is serving a single file to a handful of PCs then a 2 drive mirror will be more then enough. That is what I currently have setup on the old server, but it only has 1GB ram and AMD Duron 1300MHz CPU. The performance on the clients gets slower as the file size grows and now it has got very slow - hence the new server. You should stick with the OS RAID though as the onboard RAID will bring nothing but pain. That is what I have read. So understood :-) For sequential IO expect 60MB/s read and 40MB/s write (with the drive's write cache enabled) per drive. Random IO is an order of magnitude less. Should that be OK for my needs or for the clients to be happy should I be wanting more? what figure should I be looking at? -Ross Sorry for all the questions and thanks for the help. Stewart ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Poor RAID performance new Xeon server?
Stewart Williams wrote: John R Pierce wrote: Stewart Williams wrote: I have just purchased an HP ProLiant HP ML110 G5 server and install ed CentOS 5.2 x86_64 on it. It has the following spec: Intel(R) Xeon(R) CPU 3065 @ 2.33GHz 4GB ECC memory 4 x 250GB SATA hard disks running at 1.5GB/s Onboard RAID controller is enabled but at the moment I have used mdadm to configure the array. RAID bus controller: Intel Corporation 82801 SATA RAID Controller that is essentially desktop grade disk IO For a simple striped array I ran: # mdadm --create /dev/md0 --level=0 --raid-devices=2 /dev/sdb1 /dev/sdc1 # mke2fs -j /dev/md0 # mount -t ext3 /dev/md0 /mnt Attached are the results of 2 bonnie++ tests I made to test the performance: # bonnie++ -s 256m -d /mnt -u 0 -r 0 and # bonnie++ -s 1g -d /mnt -u 0 -r 0 I also tried 3 of the drives in a RAID 5 setup with gave similar results. Is it me or are the results poor? Is this the best I can expect from the hardware or is something wrong? I would appreciate any advice or possible tweaks I can make to the system to make the performance better. The block I/O is the thing that concerns me as mostly I am serving a 650MB file via samba to 5 clients and I think this is where I need the speed. is this a sequential or random access application thats using this file? is it read only/mostly, or is it random update? I'm not sure, how can I find this out? its rather hard to read your bonnie output logs as they aren't very columnar. but it appears the sequetial read speed at least is really high. i'm seeing 55MB/sec random(block) and 1.4GB/sec sequential reads on the 1GB file, Correct. so I dunno what your issues are... of course, a 1GB file sits entirely in the system cache assuming a reasonable amount of otherwise idle memory I'm not sure whether the performance would suffice as I've not tried putting it in production. I am going to benchmark the old server (currently in production) that this is replacing. Thanks, Stewart I've ran the same bonnie++ test on my old server using a 1GB file. The machine has only 1GB ram and 2 IDE ATA100 hard disks in a RAID 1 mirror on seperate IDE channels on the motherboard. I got about 38MB/s write w/ 13% CPU and 80MB/s read w/ 97% CPU. Also if I watch `top` with only one user, and run a quick-report in quickbooks on a stock item, the iowait is about 50% and the cached ram fills to around 200-300MB. So with 5 users I expect it that to go up quite dramatically. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Poor RAID performance new Xeon server?
Hi Rob, Rob Kampen wrote: Hi, I too run quickbooks (2007) and offer the following scenario - 5 user licences (actually 2 times three user package were purchased). Previously I used version 2004 and this allows much better sharing of the data file, unfortunately I got sucked into an upgrade that in reality was a significant downgrade!! Yeah I know exactly what you mean. We are currently on 2005 Pro and got sucked into upgrading from 2003 Pro, which was working fine for us; but 2005 did have a couple of features we liked the sound of. Little did we know that 2005 was a zillion times slower than 2003 (in our experience) and once you convert your data file and work with it for a week or so, adding information, there is no way back and the data you've added since is too precious to loose, that you can't afford to revert to a week old backup. If only the files were version independent. Anyway - my set-up:-/ For multiple simultaneous users, one machine has to be the defacto server, i.e. it opens the file and shares access to the underlying data store on behalf of other users. (why they can't develop a decent client server product defies understanding). I've always been annoyed by this too, as it has never really been made into a proper networkable application. They also say that the company file should never reach to a size greater than 125MB. Ha! no chance. So what I have done is establish a W2K client running in virtualbox (thanks to Sun for keeping this product FOSS). This client accesses the data file from my main server (running a HW based raid 5 disk array). I have lots of ram on my virtual box client, and allocate sufficient to ensure all is in ram. Thus far the system has been very robust and no data loss. I keep this client running in share mode 24x7 and only go single user to create backups. Unfortunately Quickbooks does not provide an automated method of backing up (another gross over-sight). I can't really see the benefit in this, samba shares the company file just as well as Windows as long as you configure the permissions correctly and set oplock settings in smb.conf That said, I have read, when spending endless hours googling for tips on running QB from a server, that it can be best to serve it from a Windows box and intuit only supports that method. All the other users (on Windoze XP at this time) access the virtualbox W2K for the data file. Performance while not stellar is adequate, my file is only 10% the size of yours, but it runs basically from ram, and only save writes Apparently Quickbooks do offer more expensive products that may work better from a client server perspective but only on Windoze and MAC, but for my small business the cost is WAY TOO HIGH and I love FOSS and Linux. I think the performance difference would be far worse in this configuration with the size of our file. I must say, it took me many dozens of hours to get this working properly (mostly due to my ignorance, and Quickbooks poor design), so I hope this may assist you. Thanks for your reply Rob. It's a shame that there are these issues, as it's an excellent program and suit's our needs perfectly in every other way than that mentioned. And like you, I'd rather use FOSS and GNU/Linux. And that's not through cost, but through choice! Stewart ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
[CentOS] Poor RAID performance new Xeon server?
I have just purchased an HP ProLiant HP ML110 G5 server and install ed CentOS 5.2 x86_64 on it. It has the following spec: Intel(R) Xeon(R) CPU 3065 @ 2.33GHz 4GB ECC memory 4 x 250GB SATA hard disks running at 1.5GB/s Onboard RAID controller is enabled but at the moment I have used mdadm to configure the array. RAID bus controller: Intel Corporation 82801 SATA RAID Controller For a simple striped array I ran: # mdadm --create /dev/md0 --level=0 --raid-devices=2 /dev/sdb1 /dev/sdc1 # mke2fs -j /dev/md0 # mount -t ext3 /dev/md0 /mnt Attached are the results of 2 bonnie++ tests I made to test the performance: # bonnie++ -s 256m -d /mnt -u 0 -r 0 and # bonnie++ -s 1g -d /mnt -u 0 -r 0 I also tried 3 of the drives in a RAID 5 setup with gave similar results. Is it me or are the results poor? Is this the best I can expect from the hardware or is something wrong? I would appreciate any advice or possible tweaks I can make to the system to make the performance better. The block I/O is the thing that concerns me as mostly I am serving a 650MB file via samba to 5 clients and I think this is where I need the speed. Plus I am hoping to run some virtualised guests on it eventually, but nothing too heavy. Version 1.94 --Sequential Output-- --Sequential Input- --Random- Concurrency 1 -Per Chr- --Block-- -Rewrite- -Per Chr- --Block-- --Seeks-- MachineSize K/sec %CP K/sec %CP K/sec %CP K/sec %CP K/sec %CP /sec %CP localhost 256M 512 98 74517 19 107776 19 1451 99 + +++ 3752 16 Latency 80784us7458us 50us6489us 201us5670us Version 1.94 --Sequential Create-- Random Create localhost -Create-- --Read--- -Delete-- -Create-- --Read--- -Delete-- files /sec %CP /sec %CP /sec %CP /sec %CP /sec %CP /sec %CP 16 24866 67 + +++ + +++ 26588 73 + +++ + +++ Latency 9668us 139us 328us 13409us 14us 339us 1.93c,1.94,localhost,1,1231622612,256M,,512,98,74517,19,107776,19,1451,99,++ +++,+++,3752,16,16,24866,67,+,+++,+,+++,26588,73,+,+++,+,+++ ,80784us,7458us,50us,6489us,201us,5670us,9668us,139us,328us,13409us,14us,339us --- Version 1.94 --Sequential Output-- --Sequential Input- --Random- Concurrency 1 -Per Chr- --Block-- -Rewrite- -Per Chr- --Block-- --Seeks-- MachineSize K/sec %CP K/sec %CP K/sec %CP K/sec %CP K/sec %CP /sec %CP localhost1G 506 98 55430 13 53909 8 1431 98 1414238 97 1484 9 Latency 75827us 562ms 36504us 11904us 329us5926us Version 1.94 --Sequential Create-- Random Create localhost -Create-- --Read--- -Delete-- -Create-- --Read--- -Delete-- files /sec %CP /sec %CP /sec %CP /sec %CP /sec %CP /sec %CP 16 21333 55 + +++ + +++ 25931 70 + +++ + +++ Latency 23775us 167us 173us 11528us 26us 97us 1.93c,1.94,localhost,1,1231623061,1G,,506,98,55430,13,53909,8,1431,98,1414238,97,1484,9,16,21333,55,+,+++,+,+++,25931,70,+,+++,+,+++,75827us,562ms,36504us,11904us,329us,5926us,23775us,167us,173us,11528us,26us,97us___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] CentOS PPC architecture support
Karanbir Singh wrote: Stewart Williams wrote: I have a system with a PowerPC cpu which I'd like to run CentOS on in a production environment (albeit for a home personal server.) Does anyone know if the CentOS team are actually going to support PPC? yes I have found a page which states release 4 is in beta[1]. But little else. Is there lack of demand for support for this aging arch? somewhat. About the same level of demand there is for CentOS s390 Is there a lack of volunteers? I'd be willing to test the releases and bug report, or help out in anyway I can. sounds good. What kind of a machine do you have ? It's a Mac Mini G4 currently running Fedora. $ cat /proc/cpuinfo processor : 0 cpu : 7447A, altivec supported clock : 1333.28MHz revision: 0.5 (pvr 8003 0105) bogomips: 82.94 timebase: 41600571 platform: PowerMac model : PowerMac10,2 machine : PowerMac10,2 motherboard : PowerMac10,2 MacRISC3 Power Macintosh detected as : 287 (Unknown Intrepid-based) pmac flags : L2 cache: 512K unified pmac-generation : NewWorld AFAIK this is a 32-bit CPU. Fedora has good support, however, I don't really want to update the system often. [1] http://www.centos.org/modules/news/article.php?storyid=65 You should be clear that there is no real 'ppc' support in EL at all, they only support a ppc64 based cpu. However, ppc support is something that I plan on getting into CentOS. Timeline ? perhaps in sync with 5.3 Ah. I did not realise that. I assumed they supported both. As I said, I'd be glad to help in anyway I can. s390 is something I've always mean't to get into too, running under hercules; but never got round to it yet. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
[CentOS] CentOS PPC architecture support
I have a system with a PowerPC cpu which I'd like to run CentOS on in a production environment (albeit for a home personal server.) Does anyone know if the CentOS team are actually going to support PPC? I have found a page which states release 4 is in beta[1]. But little else. Is there lack of demand for support for this aging arch? Is there a lack of volunteers? I'd be willing to test the releases and bug report, or help out in anyway I can. Fedora has good support, however, I don't really want to update the system often. [1] http://www.centos.org/modules/news/article.php?storyid=65 ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] reuse the history
ann kok wrote:
Hi all
I want to reuse command in the shell historys
Which command I can only select traceroute 192.168.0.5 to run?
$ history |grep traceroute
26 traceroute 192.168.0.5
27 traceroute -n 192.168.0.5
28 traceroute 192.168.0.10
29 traceroute yahoo.com
46 traceroute 192.168.0.33
eg:
history |grep traceroute | awk '{ print$2 print$3}' | grep 26
Thank you
$ !26
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Re: [CentOS] Re: Moving folder just vanished??
Stewart Williams wrote: Also that is odd, is when I drag anything to the Trash icon, and open it, there are no files. However when I use a terminal and look in ~/.Trash all deleted files are show. Coincidence? Update: I've Found the problem with this, it's a bug[1] in gnome-vfs. The Trash doesn't work with FUSE file systems. The version I have installed is: gnome-vfs2-2.16.2-4.el5 I cannot find any updates, so I don't know if it's been fixed with this Gnome version. [1] http://bugzilla.gnome.org/show_bug.cgi?id=349622 ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Re: Moving folder just vanished??
MHR wrote: On Tue, Sep 30, 2008 at 2:15 PM, Stewart Williams [EMAIL PROTECTED] wrote: Also that is odd, is when I drag anything to the Trash icon, and open it, there are no files. However when I use a terminal and look in ~/.Trash all deleted files are show. This could be a synchronization issue, but I have another thought about your missing files. What file systems do you have mounted? Is there any chance that your files got moved to a mount point that is now hiding any files that are actually located under it? Try unmounting any file system you don't need and see what's there underneath. It's probably not the case, but it doesn't hurt to look. mhr Thanks, but I have tried already. The partition is an LVM volume, formatted and mounted as ext3. Then I have fuse-encfs mounted over that. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Re: Moving folder just vanished??
William L. Maltby wrote: ... and the missing files are now listed. Now or not? Not. Typo sorry. ... Last stab in the dark: any undelete capability on that file system? If the files are not found, I am guessing they have been deleted. Barring that facility, I hope you have a recent backup. Not as I am aware. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Re: Moving folder just vanished??
Thank you for all of the suggestions. So far I have tried them all but still cannot fathom it out. The files have just disappeared and I don't know how or why. I think all I can conclude is that they are gone for good. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Re: Moving folder just vanished??
William L. Maltby wrote: On Tue, 2008-09-30 at 21:54 +0100, Stewart Williams wrote: Thank you for all of the suggestions. So far I have tried them all but still cannot fathom it out. The files have just disappeared and I don't know how or why. I think all I can conclude is that they are gone for good. Last gasp: any chance of FS corruption? Maybe an fsck run will show some errors, corrections and put some goodies in lost+found? snip sig stuff HTH Hi Williams I have already tried this and gave no errors (even with fsck -f) and nothing appeared in lost+found. Strange one. -- Regards, Stewart Williams ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Re: Moving folder just vanished??
Also that is odd, is when I drag anything to the Trash icon, and open it, there are no files. However when I use a terminal and look in ~/.Trash all deleted files are show. Coincidence? -- Regards, Stewart Williams ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
[CentOS] Moving folder just vanished??
Hi all, Can anyone explain or give an clues as to what just happened? I'm running CentOS 5.2 as a desktop with Gnome. Fully up to date, etc. I was dragging a folder of image (.jpg) files to another folder on the same filesystem (LVM ext3) with the mouse and as I dropped the folder into the new folder - poof! - it disappeared like a puff of smoke. I've searched everywhere for the files/and or folder and they are totally gone. I must also point out that the filesystem was an encrypted one using fuse-encfs. In all my years of using Linux, I've never seen this happen before. Sadly I have no backup as I'd just copied them from an SD card to the HDD then formated the card - maybe I was too quick doing that step. Thanks ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
[CentOS] Re: Moving folder just vanished??
Thanks for both of your responses. Sorry for the non-threaded post, but I'm e-mailing from somewhere else. @ Mogens Kjaer I have tried this already @ William L. Maltby I have looked everywhere on the drive using programs such as 'find'. I have ran: $ find / -iname *.jpg -or *.JPG and the missing files are now listed. I know enough to be able to find files. This is whats got me because I've never know an ext3 fs to do this; unless it's a bug with fuse-encfs. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] yum provides on centos 5.2
Tony Schreiner wrote: Jerry Geis wrote: I am trying things like yum provides alsamixer on centox 5.2 i386 and x86_64 also yum provides vi yum provides gvimdiff yum provides dumpiso yum provides uname All of these return no matches found is something broke??? These are just examples. I was trying to do yum provides xf86Modes.h it returns no matches also. Jerry ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos For files try yum provides '*/vi' etc... I think this is new behavior for yum Tony Schreiner ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos I recently discovered this feature in a thread on fedora-list[1]. I did mention that maybe the yum manpage ought to be updated to inform the user, as I always wondered why it never worked for me until I saw the post. Although I knew that globs could be used with certain yum commands, I wasn't aware you needed to use them with this one. [1] http://www.redhat.com/archives/rhl-list/2008-August/msg00884.html ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
