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.

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Acceptable I/O speeds for 6 x 250GB SSDs in RAID 10

I'm running CentOS 7 (XFS filesystem) on a dell server with a PERC H700 raid controller. Inside this server I have 6 x Samsung 850 Evo 250GB SSDs (yes they are consumer drives however, this is a home ...
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1answer
476 views

What is the default journal commit interval of XFS?

Ext3 and Ext4 have a default journal commit interval of 5 seconds, which can be changed with the 'commit' mount option. I can verify that my VirtualBox host indeed flashes its disk icon after 5 ...
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4answers
1k views

How can I reduce inode utilization on an ext4 filesystem?

Summary of My Need We put a large amount of files on a filesystem for analysis at a later time. We can't control how many files we're going to have, and this one box needs access to all of them. ...
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2answers
2k views

Error growing XFS volume with xfs_growfs

I added another 8TB to my 20TB array and tried to expand it with xfs_growfs, no joy and no idea why it is failing. Much googleing has provided some answers but nothing that has worked. I am at my ...
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1answer
1k 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 ...
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1answer
858 views

Using ZFS or XFS on a Xen guest running Linux

Background: I'm investigating the viability of using a filesystem other than ext3/4, with the ability to run snapshots for backup and rollback purposes. The servers under consideration are mailbox ...
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1answer
229 views

Uneven utilization of disks in xfs-formatted logical volume

We have a backup server with 66TB of available space, set up like so: 12 6TB RAID10 arrays -> 12 PVs -> 1 VG -> 1 LV -> xfs This filesystem is used exclusively for backups (through BackupPC). It ...
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1answer
2k 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 ...
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373 views

Data recovery for XFS partition

I want to recover data from a XFS partition. It seems that I need to xfs_repair the partition but I am not sure I would lose the data, so I prefer to ask to experts. I run a Virtual Box Linux Mint. ...
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7answers
2k views

Filesystem for an external drive that'll only connect to Linux

I just bought a new 500GB external harddrive. Most of the time I only store operating system ISO's on those things and some movies. Large files anyway, well over 4GiB sometimes, so FAT is out of the ...
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3answers
2k views

Raid-5 Performance per spindle scaling

So I am stuck in a corner, I have a storage project that is limited to 24 spindles, and requires heavy random Write (the corresponding read side is purely sequential). Needs every bit of space on my ...
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4answers
2k views

Store and backup 200 million small files

My disk are 10x1TB SAS 7200 RPM in a RAID 10 with a MegaRaid 9260 hardware controller with cache/BBU. This results in a 4.6TB RAID 10 volume. hdparm -t (when device is empty) results in 500MB/s. RAID ...
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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 ...
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1answer
331 views

get mkfs.xfs options from existing xfs filesystem

I set up a new server last week, did some testing with different mkfs.xfs options on mdadm raid5, i finally found some statisfying mkfs options. Now i am about to set up a new server having exactly ...
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1answer
2k views

Converting Amazon EC2 ext4 EBS volume into XFS filesystem

I need to convert my Amazon EC2 ext4 filesystem into a XFS one so I could take consistent snapshots and send them to S3. I'm using custom small image of ubuntu server 10.10 with i686 architecture in ...
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1answer
4k views

How can I check whether 64-bit inodes are used in an existing XFS filesystem?

Some of my users have had trouble with software (on Scientific Linux) that cannot list directory contents when accessing an XFS filesystem mounted with the "inode64" option. So I have copied the data ...
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1answer
2k 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 ...
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2answers
10k 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 ...
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4answers
821 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. ...
2
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1answer
21 views

Unable to resize logical volume

I'm showing a difference in available space in lvdisplay vs df -h [user@box]~ lvdisplay --- Logical volume --- LV Path /dev/rhel_data/www LV Name www VG Name ...
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1answer
57 views

Run out of space when copying between similar XFS systems [duplicate]

I have a 4Tb disk with 1 xfs partition (sda1). I wanted to copy almost all the data there (2,8Tb from the 3,6Tb used) into a new disk (sdc1). First I have prepared sdc in the same way sda: parted -l ...
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1answer
6k views

XFS as default filesystem in the enterprise

After reading up on the whole data=ordered fiasco that EXT4 went through and how much support there was on it accommodating "broken" applications, I was surprised that a filesystem that is not ...
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1answer
516 views

Restrict file access to append only

I have a directory with log files and I'm putting logs from script launched by users into them. Logging with syslog isn't possible in this case. I want the users to have only write permissions on ...
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2answers
1k 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 doesn'...
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1answer
4k 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 /...
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1answer
657 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 ...
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1answer
4k views

XFS slow performance on LVM'ed RAID, faster when RAW or non-LVM

I have a weird issue with a server I am setting up. It's for a filesharing-type website, so fast IO and plenty of capacity are the requirements. OS is CentOS 6.4 64-bit The server in question is a HP ...
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1answer
284 views

SLES 11 recommended filesystem

We are upgrading some servers from SLES 10 to SLES 11 and I just saw that ext4 is not supported. Should I move to XFS or keep ext3? I will be moving the programs and databases to a new VM so ...
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1answer
104 views

When I mount an XFS snapshot that was frozen, do I need to unfreeze it?

I'm snapshotting an XFS EBS volume, freezing it first. When I mount the snapshot as a new volume on a different instance will I need to unfreeze the volume before it can be used, or will it not be ...
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1answer
6k views

Recommended filesystem for MySQL (xfs vs ext4)

Setting up a MySQL 5.5 server, and wondering what the recommended filesystem is? ext4 or xfs? Running InnoDB and 40% writes 60% reads. Thanks.
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3answers
3k views

NFS / DRBD / XFS Performance issues

we have a NFS sitting on top of XFS and drbd which delivers us a horrible performance (about 1MB/s read / write as shown in iostat/iotop) the xfs volume properties are: meta-data=/dev/drbd0 ...
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3answers
3k 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 ...
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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 ...
2
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1answer
356 views

How to investigate high CPU for dmeventd (lvm2 / xfs)

I have three CentOS 7.2.1511 Servers that started showing dmeventd at the top of the cpu utilization (single core). They are running docker and apache mesos. Even when I shutdown docker and mesos ...
2
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1answer
720 views

mkfs fails to create a new xfs partition

I am using Ubuntu LTS 12.04 server installed as a virtual machine on VMware Workstation. Recently, I extended the logical disk. I used sudo fdisk /dev/sdb command and i created an extended disk that ...
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2answers
23k views

How to recover XFS file system with “superblock read failed”

I have a disk from a Buffalo LinkStation that has an XFS partition on it that I cannot mount. Plugging the disk into an SATA->USB caddy on an Ubuntu box. I get the following: $ sudo fdisk -l /dev/...
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1answer
431 views

XFS disk becomes unavailable after a while

Ubuntu 12.04 (but the same was on 11.10 before upgrading) WD MyBook, 2TB, no RAID (or RAID0, not completely sure, anyway no mirroring, both 1TB disks are in use, mounted as a single device). ...
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0answers
40 views

old tape backup using xfsrestore

I have some old tapes that were backups to servers from an old irix machine. I need to get the data off of them and I know they were written to the tapes via 'xfsdump'. I'm running ubuntu 14.04 server....
2
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1answer
27 views

RAID geometry parameters for XFS on top of LVM

I need to set up an XFS filesystem on top of LVM on top of a hardware RAID-6 (10x 6TB + 2 parity) and I found the guideline on http://xfs.org/index.php/XFS_FAQ ("How to calculate the correct sunit,...
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1answer
199 views

Want to understand XFS strangeness

have a XFS partition that I find to act very strangely. It mounts fine under a system but won't mount under others --of which my main system. As I'm new at XFS, I'd love to hear from users more ...
2
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1answer
128 views

What does sunit=0 and swidth=0 mean for XFS file system?

I created an XFS file system using default parameters at the time of creation of a system. Now looking at the output of xfs_info, it show 0 for the values of sunit and swidth. I can't seem to find ...
2
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1answer
357 views

Recreate XFS Partition with Existing Filesystem

I have a CentOS server with two RAID arrays. The OS array and a DATA array. Long story short, recently had tons of trouble with the OS and had to reload CentOS (was 5.7 and went to 6.5). Everything ...
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0answers
180 views

How can I recalculate XFS projects quota?

I have a XFS formatted disk and several projects quota in it. # xfs_quota -xc 'report -phN' foo 20K 22.9G 22.9G 00 [------] bar 396K 5.7G 5.7G 00 [------] buz 12K 22.9G 22.9G 00 [-...
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0answers
613 views

NFS server unresponsive to clients - with processes 'migration' and 'xfssyncd' consuming unusual cpu

I have a CentOS 6.4 fileserver running NFS 4, serving a couple of XFS filesystems. There are a few dozen clients connected to it. Today it slowed to a crawl for the clients - the clients would hang or ...
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1answer
891 views

Debian package performance on XFS, btrfs, ext3, ext4

I did 4 clean installations of debian 6 and measured time of installing some average virtual package. FS options are default. time apt-get install build-essential I got very strange results (min:...
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6answers
2k views

Safe filesystem for Email homedir storage? XFS? JFS? Btrfs? Reiser4?

i'm building an email system and considering some filesystem that support online-resize, safe when power-outage, and does not restrict number of files per directory(or at least can hold some millions ...
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2answers
709 views

Filesystem recommendation for 5 TB file storage

I have a locally attached 5 TB RAID6 system (IBM DS3512). It will be used as a storage for large data files that are written in sequential writes, and then read back for processing. Eventually the ...
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4answers
8k 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 ...
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3answers
882 views

Upgrading server motherboard while maintaining 12 SATA ports

My office has been using a FreeNAS server that was built with desktop hardware. We use it for storing RAW photos (~50mb each). We have 3 workstations that access (browse, retouch, save) the files ...
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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). ...