EXT4/LVM recommendations for 3TB of mdbox ?
dovecot at nryc.fr
Wed Jun 24 20:03:22 UTC 2015
Do you have recommendations on EXT4 and LVM options for a 3TB
file-system for mdbox?
We currently use the mbox format on a XFS with poor performances since
the update in v2.1 (Debian).
We will switch to EXT4 to have the possibility of shrinking the
file-system if needed (which is not possible with XFS), we currently
have LVM partitions but with mdbox we will use LVM snapshots to backup
the server in a consistent state.
- any particular options to use with mkfs.ext4 for the creation of the
- do you recommend a «thin» logical volume ? Our storage (IBM Storwize
v7000) already have thin provisioning capabilities.
The server will be a VMware virtual machine running Debian with RDM LUNs
of 500GB. Data blocks will be automatically spread across several RAID
disk (SSD, SAS, SATA) by the v7000. The «mdbox_rotate_size» will be
configured around 10MB.
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