search for: storage_administration_guide

...h the Initiator doc[3] (each on different RH/CentOS boxes) helped me to figure it out. BTW while in [1] they use /dev/vdb it works as well with real /dev/sd* or Logical Volumes, I don't recall _trying_ with PVs. [1] https://access.redhat.com/documentation/en-US/Red_Hat_Enterprise_Linux/6/html/Storage_Administration_Guide/ch-iscsi.html [2] https://en.wikipedia.org/wiki/ISCSI#Initiator [3] https://access.redhat.com/documentation/en-US/Red_Hat_Enterprise_Linux/6/html/Storage_Administration_Guide/iscsi-api.html Even when this disclaimer is not here: I am not a contracting officer. I do not have authority to make or...

...tream removed from CentOS6 could be provided in extras? The CentOS5 SRPM builds cleanly under CentOS6, and upstream's workaround is insufficient as it only covers diskless clients, not helpful if you need pxeos. https://access.redhat.com/knowledge/docs/en-US/Red_Hat_Enterprise_Linux/6/html/Storage_Administration_Guide/nfs-diskless-systems.html

...keeping our home directory servers on 5. What he found was the mount option barrier. According to one or two hits I found, googling, it's not clear that 5.x even recognizes this option. From upstream docs, <https://access.redhat.com/site/documentation/en-US/Red_Hat_Enterprise_Linux/6/html/Storage_Administration_Guide/writebarrieronoff.html>, it's enabled by default, and affects *all* journalled filesystems. Remounting the drive with -o nobarrier, I just NFS mounted an exported directory... and it took 20 seconds. Since most of our systems are all on UPSes, we're not worried about sudden power loss....

...aid/msg41950.html ) So my hypothesis is that if I can somehow force udev to drop the references to the disk completely, perhaps I can remove sdg from the array and start a rebuild with the spare already available. I found these docs for Fedora: https://docs.fedoraproject.org/en-US/Fedora/14/html/Storage_Administration_Guide/removing_devices.html But of course I can't do step 3, since md is refusing to give up sdg. But sdg is already gone, so I really don't care about outstanding IO, and it's a bit too late to worry about a 100% clean removal. So my questions are, will step 7 actually clean up references...

Am 13.07.17 um 17:10 schrieb Tris Hoar: > On 13/07/2017 14:38, G?tz Reinicke - IT Koordinator wrote: >> Am 13.07.17 um 14:46 schrieb Pete Biggs: >>>> I have a vsftp server and two users for up and download. >>>> >>>> If user Alice uploads a file, the owner is set to Alice as expected >>>> "-rw-r--r-- alice ftpuploadgroup"

On Jul 11, 2015 11:37 AM, "Miguel Barbosa Gon?alves" <m at mbg.pt> wrote: > > Hi! > > I am about to deploy a virtualisation cluster based on a storage > server with 10 Gbps interfaces for iSCSI and two computing nodes > running VMs in KVM that will access the storage via the 10 Gbps > network. > > I am trying to find real use cases of people using CentOS

Hello, because of high disk load we plan to move from disk (raid1) to ssd. Are there recommendations for - manufacturer - file sytem - raid1 The Red Hat Storage Administration Guide says: - no raid 1 - ext4 only is this state of the art? I have searched list,centos.org 2015 - nothing found. I found in the year 2012 / 2013: https://www.centos.org/forums/viewtopic.php?t=7580

...load folders and others did not rename > ...Than we look for an other workflow. There is a much more fine-grained ACL system in Linux which sits on top of the standard file permissions. Have a look at, for instance, https://access.redhat.com/documentation/en-US/Red_Hat_Enterprise_Linux/6/html/Storage_Administration_Guide/ch-acls.html or 'man acl' With this you will be able to give specific users different access permissions?on the files created. As someone else said, ProFTPD also has a finer-grained permission system - you can change access according to which user is logged in via FTP and you can change...

Hello, I've just read how GoDaddy upgraded its servers to CentOS6 and in the article they wrote about "NFS client caching". Can anyone point me to documentation they used to implement NFS client caching? Tips and tricks are welcome :-) Cheers!

Hi, I just recently read a post about SSD triming (discard vs fstrim): ?http://www.howtogeek.com/176978/ubuntu-doesnt-trim-ssds-by-default-why-not-and-how-to-enable-it-yourself/So far I used discard on all my SSDs. Now I am wondering if it is really worth it to switch them all to a crontabed fstrim... Anyone made the switch yet? Thx, JD

has anyone been using cachefs with 6.x series? i have tried using it but i keep getting hung processes after 2 weeks. ATM, running 6.3 but was curious if its more stable on Centos 6.5? -- --- Get your facts first, then you can distort them as you please.--

Has anyone installed a high I/O application such as an email server on SSD drives? Was thinking about doing two SSD's in RAID1. It would solve my I/O latency issues but I have heard that SSD's wear out quickly in high I/O situations? Something like each memory location only has X many writes before its done. Just wandering if anyone has tested it and if newer SSD's are better about

...re before taking it to the physical servers. I found a shortcut for creating a software RAID 10 ("--level=10"), device in CentOS 6. Looking at the below, I don't see anything about a shortcut for RAID 60. https://access.redhat.com/documentation/en-US/Red_Hat_Enterprise_Linux/6/htm l/Storage_Administration_Guide/s1-raid-levels.html Is RAID 60 an uncommon RAID-configuration, as compared to RAID 10, and this might be why it's missing? Not too cumbersome to first create two RAID 6-arrays, then add them to a RAID 0, but it does take some extra time. Besides, I haven't found any way to fail a member d...

Hey everyone, My company is beginning to look at using SSD drives in our CentOS based servers. Does C5 and C6 support TRIM and other "required" functions for the SSD to operate? Thanks, Andrew Reis Microsoft Certified Technology Specialist CompTIA Network+ Networking/Systems Analyst Webmaster DBMS Inc.

Hi all, I was recently charged with configuring a new fairly large (24x3TB disks) fileserver for my group. I think I know mostly what I want to do with it, but I did have two questions, at least one of which is directly related to CentOS. 1) The controller node has two 90GB SSDs that I plan to use as a bootable RAID1 system disk. What is the preferred method for laying out the RAID array? I

Hi, most file access rights sync between ACLs of linux and the security tab of windows file properties, but not all. Where are the other infos stored? I tried in linux 'getfattr -d' and 'samba-tool ntacl get', but neither output changed when using windows to add individual right for a user that already has rights inherited from the parent directory. Windows remembers every

.../share/doc/sudo/schema.iPlanet Technically if you could find the correct schema to store autofs data in AD then it should work. Red Hat even appear to allow you to specify the LDAP attributes and object classes to use: https://access.redhat.com/documentation/en-US/Red_Hat_Enterprise_Linux/6/html/Storage_Administration_Guide/s2-nfs-config-autofs-LDAP.html In fact, someone's already got Samba 4 serving automount data: https://wiki.samba.org/index.php/Samba_AD_Schema_Extenstions Note the warning at the top of the page. -Luke -- Luke Bigum Senior Systems Engineer Information Systems ----- Original Message -----...

...org >https://lists.centos.org/mailman/listinfo/centos Hi Erick, In the end how much space is used as per vdostats ? Keep in mind that VDO keeps one slab for itself (default is 2GB) and also some metadata is written : https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/7/html/storage_administration_guide/vdo-qs-requirements#vdo-ig-storage-reqts Best Regards, Strahil Nikolov

sorry corrections: For this test I created a 40GB lvm volume group with /dev/sdb and /dev/sdc then a 40GB LV then a 60GB VDO vol (for testing purposes) vdostats --verbose /dev/mapper/vdoas | grep -B6 'saving percent' output from just created vdoas [root at localhost ~]# vdostats --verbose /dev/mapper/vdoas | grep -B6 'saving percent' physical blocks : 10483712

I am running software RAID1 on a somewhat critical server. Today I noticed one drive is giving errors. Good thing I had RAID. I planned on upgrading this server in next month or so. Just wandering if there was an easy way to fix this to avoid rushing the upgrade? Having a single drive is slowing down reads as well, I think. Thanks. Feb 7 15:28:28 server smartd[2980]: Device: /dev/sdb