XFS is a file system originally for SGI's IRIX OS, but is now available for Linux. It is known for handling large files and large file systems well, one of the few Linux file systems that can handle partitions over 16.8TB.

learn more… | top users | synonyms

3
votes
1answer
847 views

XFS Check/Repair Fails

I have a mysql database server on an EC2 instance with 3 drives in a Raid 0 array. This morning the server crashed and after inspecting the logs, I noticed a Structure Needs Cleaning error(i.e. System ...
0
votes
3answers
935 views

Partition as XFS on RAID 5

I have configured a 14 TB as RAID 5. How can I make it to two XFS partitions? Details are as below: Disk......cciss/c0d1: 14002.5 GB, 14002557116416 bytes 255 heads, 32 sectors/track, 3351561 ...
1
vote
2answers
2k views

Can I use blockdev --setra on a formatted device or exisiting RAID Array?

I have an existing RAID Array and I want to increase the readahead setting. But the device has already been formatted and contains data that I cannot afford to lose. I'm unfamiliar with the blockdev ...
0
votes
1answer
347 views

XFS drive unmounting on write

I have a database backup script which does a mysqldump and copies the dump to an external hard drive with an XFS partition on it. Unfortunately partway through the copy, the drive dismounts and the ...
0
votes
0answers
323 views

Mounting a partition from a raw DD image file of a physical disk

I have a DD image taken from the raw HDD image (/dev/sdb). This image file contains an XFS filesystem that I need to mount. It is much too large to restore to disks (2.6TB img file) so I would like to ...
0
votes
1answer
2k views

/dev/md device disappeared in Linux RAID1 array

I inherited a NAS server that is setup with 5 RAID1 soft arrays grouped together into a XFS volume group. Whoever built the 5th md device created it without a Linux Auto RAID partition (Looks like ...
1
vote
2answers
769 views

Hardware RAID controller set to 256kB stripe size, but XFS to 4k block size

Is this configuration ok? I've read that the stripe size should match the block size. I am mostly storing 8-30GB single files that are read sequentially. What should I adjust, and how? Ubuntu ...
0
votes
7answers
5k views

Good filesystem for 20TB hardware-controlled RAID5 array?

What's the best file system for Ubuntu 10.10 assuming the average filesize is 8-30GB with no more than 1-2 users accessing the array at any given time?
1
vote
3answers
1k views

Poor XFS performance — what's going on?

I recently formatted a 20TB array as XFS. For file transfers < 10G performance is fantastic. However once I exceed 10G disk I/O decays logarithmically. I have the journal on the same disk. When ...
5
votes
1answer
2k views

Mount XFS partition with < 4k block size

I have an XFS partition with a 64k blocksize. But I can only mount it in Ubuntu 10.10 when the blocksize is the default of 4k. How can I mount a partition with the larger blocksize? This works: ...
0
votes
1answer
278 views

How to copy a large RAID1 XFS partition with over-allocated space

I have a NAS server with 12 1T drives in a RAID10 linux soft array. The main data area is a 5.4TB XFS partition. On that partition, I've been creating iSCSI disk images, taking advantage of XFS's ...
0
votes
1answer
507 views

How should I setup an Ubuntu server on EC2 (MySQL, code location, etc..)?

I've started to fiddle around EC2, and I can't seem to understand the "AWS way" of setting up a server. I'm using Ubuntu server 10.10 64 bit, from an official AMI by Canonical. There is an EBD drive ...
3
votes
1answer
1k views

XFS I/O Error accessing Logical Block 0 of an LVM snapshot: is the drive or snapshot bad?

I have OpenSuSE 11.3 running as a Xen host on a machine with 8x296GB Cheetah 15k.6 SAS disks, 4 of which are mirrored, the other 4 striped. I'm using LVM to manage the disks and they are formatted ...
2
votes
1answer
1k views

Corrupted XFS and no way to xfs_repair

One of my hosted server has some XFS problems. after the last crash, some of my RRD folders got corrupted. example (sorry, it's in french): # rm * rm: impossible de supprimer « create_rrd.sh »: La ...
2
votes
1answer
3k views

Resize XFS Partition (Increase)

I'm new to xfs and was wondering how to increase the size of /var and /home, I'm guessing xfs does not simply increase in size as needed... Filesystem Type Size Used Avail Use% Mounted on ...
1
vote
1answer
2k views

Trying to determine the correct number of XFS allocation groups for postgresql server on Linux

I am running a postgres 8.4.5 server on the linux 2.6.33.7 kernel on an 8 disk raid array with an LSI controller. Most of the tables are around 1GB or less. I know that XFS uses allocation groups ...
1
vote
4answers
5k views

LVM vs RAID0 vs RAID “linear” - Combine 2 disks as one, data recovery?

given two 2TB USB external disks that have to be combined to one 4TB volume and formatted with one big Filesystem (XFS), I have a small question to ask. Does LVM provide better Data recovery, should ...
1
vote
1answer
337 views

How decode xfs lost+found directory

I have managed to trash my homebrew Nas box (an old hp d530 + 2x 750gb sata soft raid1 + 17gb boot disk with ubuntu server 8.10) I have searched the web and tried to repair the file system but to no ...
-2
votes
2answers
353 views

is xfs a good raid setup?

I'm using amazon, and there is docs everywhere to use xfs. Is xfs a software based raid? Is it fast?
2
votes
3answers
2k views

Linux (NAS) Permissions problem (Permission Denied)

This is probably easier to show than to explain... -bash-3.2$ id uid=501(admin) gid=503(admin) groups=100(users),501(admins),503(admin) -bash-3.2$ groups admin users admins -bash-3.2$ ls -l total 8 ...
1
vote
1answer
559 views

/ partition as xfs in Centos 5 ? , any advantage for apps using large files?

I have been investigating a bit previously to install Centos 5 in a box that it will use applications managing large files (i think more than 300 MB minimal). I was thinking in , as / has a lot of ...
5
votes
2answers
3k views

It is XFS reliable? In case of a power gone off is xfs riskier that ext3 in data corruption/safey?

I have been having some electrical issues,mostly power going out suddenly for a few months,and although ups solve the thing mostly. But still i am worried about filesystem corruption,and data lost. ...
2
votes
1answer
516 views

Upgrading 32-bit XFS filesystem to 64-bit

What would be the procedure for upgrading XFS filesystems from 32-bit to 64-bit? What damage or issues would arise from accessing XFS fs that was formatted on a 32-bit OS with a 64-bit OS? To ...
1
vote
1answer
448 views

Accessing file on XFS partition over NFS locks up application

After upgrading the local file server to Ubuntu server 10.04 LTS, I can no longer run mutt or svn. The lock up happens when the apps attempt to access the NFS mounted drives. I did an ltrace and ...
1
vote
1answer
614 views

What XFS configuration should I use for EC2 disks (mysql db-server)

To be able to use ec2-consistent-snapshot on my EC2 servers I have decided to make my partition for my database data XFS What are the best XFS configuration options I can use for these disk? The disk ...
0
votes
2answers
519 views

How should I backup this large volume?

I have a 10TB XFS filesystem on a SLES 10.2 server. I am currently running rsync on it once per day, to sync it with a disk-based online backup on another server. The primary volume is quite busy as ...
1
vote
1answer
3k views

Should use EXT4 or XFS to be able to 'sync'/backup to S3?

It's my first message here, so bear with me... (I have already checked quite a few of the "Related Questions" suggested by the editor) Here's the setup, a brand new dedicated server (8GB RAM, ...
1
vote
2answers
3k views

How to “align” a Linux file system with a SSD?

I'm interested in getting a dedicated server with a SSD, probably Corsair Force series CSSD-F120GB2-BRKT. It'll be an Linux server, most likely running XFS (but I'm open to other alternatives). ...
1
vote
0answers
555 views

Weird used/free space view of network drives with Samba and XFS

I'm using XFS project quotas to offer some private and limited disk space to my users, running Windows. It works pretty well, as the users can't exceed the quota like expected. However, the Samba's ...
2
votes
2answers
6k views

Why won't xfs_check run?

I'm running a fully updated Ubuntu 9.04 "Jaunty" i686 server. I have an single XFS volume in an LVM group called /dev/mapper/vg0-bigthree. If I boot to single user mode and ensure that the volume is ...
2
votes
2answers
2k views

Questions for Ext3/4 Features ( dir_index,filetype) and XFS File system Performance

I am developing an applications which reads huge list of directories and check file types using file command and using ext4 file system. When i look into Ext4 , i see it have two interesting features ...
15
votes
2answers
2k views

Verify A Partition is Aligned in Linux With RAID and LVM

Does anyone know the steps to verify that a XFS filesystem on top of LVM and md RAID is properly aligned on an array of 4096 Byte aka "Advanced Format" sectored disks? Some references are: ...
2
votes
3answers
7k views

changing filesystem format from xfs to ext4 without losing data

I have a fresh Lucid Lynx (Ubuntu 10.04) running on a laptop. where I defined the filesystems as: mount point / on ext4 (46 Gb) mount point /home on jfs (63 GB) swap as 3 Gb I left the machine ...
7
votes
4answers
3k views

Does putting the XFS log on an SSD significantly improve performance?

I have a five disk array running XFS in RAID5, and I would like to improve it's performance. I have seen some hints that putting the log onto a separate device can help, does putting the log onto an ...
5
votes
2answers
1k views

RAID Read/Write Speed Gradually Slows

This is actually a server at home, but I felt it was sufficiently complicated as to not have it on SuperUser and could easily apply to a professional situation. I have a file server running Debian ...
2
votes
4answers
746 views

Linux filesystem suggestion for MySQL with a 100% SELECT workload

I have a MySQL database that contains millions of rows per table and there are 9 tables in total. The database is fully populated, and all I am doing is reads i.e., there are no INSERTs or UPDATEs. ...
4
votes
6answers
3k views

JFS or XFS or anything else?

After deciding to use LVM2 as volumemanager on our servers there was also the wish for an online resizeable filesystem. After reading a few articles I decided to use JFS in favour of XFS. Now today I ...
1
vote
1answer
796 views

Very Slow Sequential Reads over NFS from an XFS disk in Amazon EC2

I am using tiobench to test performance of an NFS mounted volume, and notice that Sequential Reads are much slower than Random Reads. This isn't the behavior when I run the same test on the disk ...
10
votes
1answer
6k views

Easy to expand Linux software RAID 5 with XFS. Best practices?

I use my Ubuntu machine as a file server for Windows/Linux/Mac clients using a Samba share. I need it to be easily expandable by just adding more hard drives without having to move any data back and ...
2
votes
3answers
2k views

Ubuntu 9.10 cron script 'ec2-consistent-snapshot' unable to execute and access files

I have a Ubuntu 9.10 image running on Amazon EC2 and I've setup a backup script ec2-consisten-snapshot. I'm able to run the script from SSH, and everything works peachy. sudo ec2-consistent-snapshot ...
10
votes
2answers
809 views

Adding 60TB Storage to an SLES 10 Server

I have to add some archive\staging storage to an SLES 10 Server. The requirement is to present fairly large volumes (9-20TB each approx, 60TB or so in total) that will be used to store archive data ...
5
votes
6answers
4k views

Monitoring XFS filesystem health in Linux

I recently experienced a filesystem meltdown. I had a server running for about 180 days non stop without any issues, but then I noticed weird stuff happen and apparently the ext3 filesystem was in ...
5
votes
1answer
7k views

How can you shrink an XFS filesystem?

I have an xfs filesystem that has some free space. Can I shrink it? I know of xfs_growfs. And there is resize2fs and resize_reiserfs. Side question: is xfs not a good filesystem choice for bulk ...
0
votes
3answers
729 views

xfsdump: Spanning multiple drives

I'm trying to create a one-off snapshot of 5.5TB of data to 3 external 2TB drives. The data is on an XFS partition, so the logical option seemed to be xfsdump, as it can span multiple devices. As a ...
5
votes
3answers
2k views

OpenSolaris ZFS barebones for NAS

I've been tasked to suggest a NAS replacement for our aging fileserver at work, its currently running Linux with XFS (using LVM). We're a very small company of 5 folks, so we're using commodity ...
0
votes
4answers
1k views

Best filesystem for storing photos on Linux

I have 200+G of photos I usually keep on my main computer so that they are always available. File sizes range from 2-3MB JPGs to 10-12MB RAW files. I thought the nice old ext3 could be abandoned in ...
0
votes
2answers
2k views

What linux filesystems does Oracle 10g support?

I am wondering if there is a supported (or recommended) list of filesystems that Oracle 10g supports. Specifically I wish to know if storing Oracle data on an XFS partition is a bad idea. I ask ...
0
votes
2answers
527 views

best filesystem for mysql @ net-volume @ ec2

What is the best filesystem to use for EC2 network volume to be used for mysql database? And what mount options to use? Specifically is there a better option then xfs +noatime? This is the option I ...
0
votes
1answer
625 views

slow disk writes between host and guest

I've got a ubuntu (server kernel) on a amd x4, 4gb ram, 2x seagate sata 1 tb disks for testing virtual machines and the write performance is very slow. The two disks are in a software raid1 array, one ...
7
votes
3answers
5k views

How to corrupt a file system

I am going to be testing 'xfs_repair' on some large file systems ( around 50 TB ) as in the past the memory usage is high. While I could test the program only on file systems which were correct it ...