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FreeBSD Enterprise Storage Sawomir Wojciech Wojtczak - PowerPoint PPT Presentation

Mar 24, 2024 •172 likes •2.05k views

FreeBSD Enterprise Storage Polish BSD User Group Welcome 2020/02/11 FreeBSD Enterprise Storage Sawomir Wojciech Wojtczak vermaden@interia.pl vermaden.wordpress.com twitter.com/vermaden bsd.network/@vermaden https://is.gd/bsdstg FreeBSD

  1. FreeBSD Enterprise Storage Polish BSD User Group Internal Solutions 2020/02/11 Internal Solutions - Filesystems ● UFS - classic/mature/traditional small memory footprint UNIX filesytem. ○ UFS with Soft Updates (SU) allows Snapshots and dump(8) / restore(8) features. ○ UFS with Journaled Soft Updates (SU+J) with ultra fast fsck(8) process. ● ZFS - modern pooled UNIX storage. ○ Stable ZFS - based on FreeBSD Base System ZFS implementaiton. ○ Latest ZFS - based on ZoL/ZoF OpenZFS repository (use FreeBSD Ports). ○ Differences - http://open-zfs.org/wiki/Feature_/lags - detailed information. ● FAT / EXT2 - FreeBSD maintains BSD licensed FAT/EXT2 filesystem implementations.

  2. FreeBSD Enterprise Storage Polish BSD User Group Internal Solutions 2020/02/11 Internal Solutions - Frameworks

  3. FreeBSD Enterprise Storage Polish BSD User Group Internal Solutions 2020/02/11 Internal Solutions - Frameworks ● GEOM - FreeBSD's Modular Disk Transformation Framework.

  4. FreeBSD Enterprise Storage Polish BSD User Group Internal Solutions 2020/02/11 Internal Solutions - Frameworks ● GEOM - FreeBSD's Modular Disk Transformation Framework. ○ Access/control of classes through use of providers/devices in /dev directory.

  5. FreeBSD Enterprise Storage Polish BSD User Group Internal Solutions 2020/02/11 Internal Solutions - Frameworks ● GEOM - FreeBSD's Modular Disk Transformation Framework. ○ Access/control of classes through use of providers/devices in /dev directory. ○ Provides various storage related features and utilites:

  6. FreeBSD Enterprise Storage Polish BSD User Group Internal Solutions 2020/02/11 Internal Solutions - Frameworks ● GEOM - FreeBSD's Modular Disk Transformation Framework. ○ Access/control of classes through use of providers/devices in /dev directory. ○ Provides various storage related features and utilites: ◦ Software RAID0/RAID1/RAID10/RAID3/RAID5 configurations.

  7. FreeBSD Enterprise Storage Polish BSD User Group Internal Solutions 2020/02/11 Internal Solutions - Frameworks ● GEOM - FreeBSD's Modular Disk Transformation Framework. ○ Access/control of classes through use of providers/devices in /dev directory. ○ Provides various storage related features and utilites: ◦ Software RAID0/RAID1/RAID10/RAID3/RAID5 configurations. ◦ Transparent encryption of underlying devices with GE GELI LI/GD GDBE (like LUKS).

  8. FreeBSD Enterprise Storage Polish BSD User Group Internal Solutions 2020/02/11 Internal Solutions - Frameworks ● GEOM - FreeBSD's Modular Disk Transformation Framework. ○ Access/control of classes through use of providers/devices in /dev directory. ○ Provides various storage related features and utilites: ◦ Software RAID0/RAID1/RAID10/RAID3/RAID5 configurations. ◦ Transparent encryption of underlying devices with GE GELI LI/GD GDBE (like LUKS). ◦ Transparent filesytem journaling for ANY filesystem with GJ GJOURNAL.

  9. FreeBSD Enterprise Storage Polish BSD User Group Internal Solutions 2020/02/11 Internal Solutions - Frameworks ● GEOM - FreeBSD's Modular Disk Transformation Framework. ○ Access/control of classes through use of providers/devices in /dev directory. ○ Provides various storage related features and utilites: ◦ Software RAID0/RAID1/RAID10/RAID3/RAID5 configurations. ◦ Transparent encryption of underlying devices with GE GELI LI/GD GDBE (like LUKS). ◦ Transparent filesytem journaling for ANY filesystem with GJ GJOURNAL. ◦ Export block device over network with GEO EOM GATE devices (like NFS for block).

  10. FreeBSD Enterprise Storage Polish BSD User Group Internal Solutions 2020/02/11 Internal Solutions - Frameworks ● GEOM - FreeBSD's Modular Disk Transformation Framework. ○ Access/control of classes through use of providers/devices in /dev directory. ○ Provides various storage related features and utilites: ◦ Software RAID0/RAID1/RAID10/RAID3/RAID5 configurations. ◦ Transparent encryption of underlying devices with GE GELI LI/GD GDBE (like LUKS). ◦ Transparent filesytem journaling for ANY filesystem with GJ GJOURNAL. ◦ Export block device over network with GEO EOM GATE devices (like NFS for block). ● FUSE - BSD licensed FUSE filesystem implementation with 7.04 - 7.23 protocol support.

  11. FreeBSD Enterprise Storage Polish BSD User Group Internal Solutions 2020/02/11 Internal Solutions - Frameworks ● GEOM - FreeBSD's Modular Disk Transformation Framework. ○ Access/control of classes through use of providers/devices in /dev directory. ○ Provides various storage related features and utilites: ◦ Software RAID0/RAID1/RAID10/RAID3/RAID5 configurations. ◦ Transparent encryption of underlying devices with GE GELI LI/GD GDBE (like LUKS). ◦ Transparent filesytem journaling for ANY filesystem with GJ GJOURNAL. ◦ Export block device over network with GEO EOM GATE devices (like NFS for block). ● FUSE - BSD licensed FUSE filesystem implementation with 7.04 - 7.23 protocol support. ○ Details - https://freebsd.org/news/status/report-2019-04-2019-06.html#FUSE

  12. FreeBSD Enterprise Storage Polish BSD User Group Internal Solutions 2020/02/11 Internal Solutions - Frameworks ● GEOM - FreeBSD's Modular Disk Transformation Framework. ○ Access/control of classes through use of providers/devices in /dev directory. ○ Provides various storage related features and utilites: ◦ Software RAID0/RAID1/RAID10/RAID3/RAID5 configurations. ◦ Transparent encryption of underlying devices with GE GELI LI/GD GDBE (like LUKS). ◦ Transparent filesytem journaling for ANY filesystem with GJ GJOURNAL. ◦ Export block device over network with GEO EOM GATE devices (like NFS for block). ● FUSE - BSD licensed FUSE filesystem implementation with 7.04 - 7.23 protocol support. ○ Details - https://freebsd.org/news/status/report-2019-04-2019-06.html#FUSE ○ Classic - NTFS3G/exFAT/EXT2/EXT3/EXT4/XFS/HFS/MTP/BTRFS/LinuxLVM/...

  13. FreeBSD Enterprise Storage Polish BSD User Group Internal Solutions 2020/02/11 Internal Solutions - Frameworks ● GEOM - FreeBSD's Modular Disk Transformation Framework. ○ Access/control of classes through use of providers/devices in /dev directory. ○ Provides various storage related features and utilites: ◦ Software RAID0/RAID1/RAID10/RAID3/RAID5 configurations. ◦ Transparent encryption of underlying devices with GE GELI LI/GD GDBE (like LUKS). ◦ Transparent filesytem journaling for ANY filesystem with GJ GJOURNAL. ◦ Export block device over network with GEO EOM GATE devices (like NFS for block). ● FUSE - BSD licensed FUSE filesystem implementation with 7.04 - 7.23 protocol support. ○ Details - https://freebsd.org/news/status/report-2019-04-2019-06.html#FUSE ○ Classic - NTFS3G/exFAT/EXT2/EXT3/EXT4/XFS/HFS/MTP/BTRFS/LinuxLVM/... ○ Virtual - s3fs/gphotofs/mp3fs/rar2fs/sqlfs/sshfs/unionfs/wikipediafs/...

  14. FreeBSD Enterprise Storage Polish BSD User Group Internal Solutions 2020/02/11 Internal Solutions - Availability

  15. FreeBSD Enterprise Storage Polish BSD User Group Internal Solutions 2020/02/11 Internal Solutions - Availability ● HAST - Highly Available Storage (like DRBD).

  16. FreeBSD Enterprise Storage Polish BSD User Group Internal Solutions 2020/02/11 Internal Solutions - Availability ● HAST - Highly Available Storage (like DRBD). ○ Transparent storage across several machines connected over TCP/IP network.

  17. FreeBSD Enterprise Storage Polish BSD User Group Internal Solutions 2020/02/11 Internal Solutions - Availability ● HAST - Highly Available Storage (like DRBD). ○ Transparent storage across several machines connected over TCP/IP network. ○ Can be understood as network based RAID1 (mirror).

  18. FreeBSD Enterprise Storage Polish BSD User Group Internal Solutions 2020/02/11 Internal Solutions - Availability ● HAST - Highly Available Storage (like DRBD). ○ Transparent storage across several machines connected over TCP/IP network. ○ Can be understood as network based RAID1 (mirror). ○ With FreeBSD's CARP and devd(8) allows highly available storage cluster.

  19. FreeBSD Enterprise Storage Polish BSD User Group Internal Solutions 2020/02/11 Internal Solutions - Availability ● HAST - Highly Available Storage (like DRBD). ○ Transparent storage across several machines connected over TCP/IP network. ○ Can be understood as network based RAID1 (mirror). ○ With FreeBSD's CARP and devd(8) allows highly available storage cluster. ● CARP - Common Address Redundancy Protocol.

  20. FreeBSD Enterprise Storage Polish BSD User Group Internal Solutions 2020/02/11 Internal Solutions - Availability ● HAST - Highly Available Storage (like DRBD). ○ Transparent storage across several machines connected over TCP/IP network. ○ Can be understood as network based RAID1 (mirror). ○ With FreeBSD's CARP and devd(8) allows highly available storage cluster. ● CARP - Common Address Redundancy Protocol. ○ Allows multiple hosts to share the same IP address and Virtual Host ID (VHID).

  21. FreeBSD Enterprise Storage Polish BSD User Group Internal Solutions 2020/02/11 Internal Solutions - Availability ● HAST - Highly Available Storage (like DRBD). ○ Transparent storage across several machines connected over TCP/IP network. ○ Can be understood as network based RAID1 (mirror). ○ With FreeBSD's CARP and devd(8) allows highly available storage cluster. ● CARP - Common Address Redundancy Protocol. ○ Allows multiple hosts to share the same IP address and Virtual Host ID (VHID). ○ Provides high availability for one or more services.

  22. FreeBSD Enterprise Storage Polish BSD User Group Internal Solutions 2020/02/11 Internal Solutions - Availability ● HAST - Highly Available Storage (like DRBD). ○ Transparent storage across several machines connected over TCP/IP network. ○ Can be understood as network based RAID1 (mirror). ○ With FreeBSD's CARP and devd(8) allows highly available storage cluster. ● CARP - Common Address Redundancy Protocol. ○ Allows multiple hosts to share the same IP address and Virtual Host ID (VHID). ○ Provides high availability for one or more services. ○ Provides floating shared highly available IP address.

  23. FreeBSD Enterprise Storage Polish BSD User Group Internal Solutions - UFS 2020/02/11 UFS with Soft Updates (SU)

  24. FreeBSD Enterprise Storage Polish BSD User Group Internal Solutions - UFS 2020/02/11 UFS with Soft Updates (SU) ● Mature classic filesystem with very small memory footprint .

  25. FreeBSD Enterprise Storage Polish BSD User Group Internal Solutions - UFS 2020/02/11 UFS with Soft Updates (SU) ● Mature classic filesystem with very small memory footprint . ● Supports TRIM natively which allows efficient data deletion on SSDs.

  26. FreeBSD Enterprise Storage Polish BSD User Group Internal Solutions - UFS 2020/02/11 UFS with Soft Updates (SU) ● Mature classic filesystem with very small memory footprint . ● Supports TRIM natively which allows efficient data deletion on SSDs. ● Supports read only snaphots (not available in SUJ mode).

  27. FreeBSD Enterprise Storage Polish BSD User Group Internal Solutions - UFS 2020/02/11 UFS with Soft Updates (SU) ● Mature classic filesystem with very small memory footprint . ● Supports TRIM natively which allows efficient data deletion on SSDs. ● Supports read only snaphots (not available in SUJ mode). ● Neither Journaling (SUJ) nor Soft Updates (SU) guarantees no data will be lost.

  28. FreeBSD Enterprise Storage Polish BSD User Group Internal Solutions - UFS 2020/02/11 UFS with Soft Updates (SU) ● Mature classic filesystem with very small memory footprint . ● Supports TRIM natively which allows efficient data deletion on SSDs. ● Supports read only snaphots (not available in SUJ mode). ● Neither Journaling (SUJ) nor Soft Updates (SU) guarantees no data will be lost. ● They (SUJ/SU) make sure that filesystem metadata will remain consistent .

  29. FreeBSD Enterprise Storage Polish BSD User Group Internal Solutions - UFS 2020/02/11 UFS with Soft Updates (SU) ● Mature classic filesystem with very small memory footprint . ● Supports TRIM natively which allows efficient data deletion on SSDs. ● Supports read only snaphots (not available in SUJ mode). ● Neither Journaling (SUJ) nor Soft Updates (SU) guarantees no data will be lost. ● They (SUJ/SU) make sure that filesystem metadata will remain consistent . ● Advantage of SU/SUJ is that filesystem can be mounted immediately after crash .

  30. FreeBSD Enterprise Storage Polish BSD User Group Internal Solutions - UFS 2020/02/11 UFS with Soft Updates (SU) ● Mature classic filesystem with very small memory footprint . ● Supports TRIM natively which allows efficient data deletion on SSDs. ● Supports read only snaphots (not available in SUJ mode). ● Neither Journaling (SUJ) nor Soft Updates (SU) guarantees no data will be lost. ● They (SUJ/SU) make sure that filesystem metadata will remain consistent . ● Advantage of SU/SUJ is that filesystem can be mounted immediately after crash . ● UFS (with SU/SUJ) requires traditional fsck(8) in background to make it clean.

  31. FreeBSD Enterprise Storage Polish BSD User Group Internal Solutions - UFS 2020/02/11 UFS with Journaled Soft Updates (SUJ)

  32. FreeBSD Enterprise Storage Polish BSD User Group Internal Solutions - UFS 2020/02/11 UFS with Journaled Soft Updates (SUJ) ● Primary purpose was to eliminate long filesystem check times with fsck(8) .

  33. FreeBSD Enterprise Storage Polish BSD User Group Internal Solutions - UFS 2020/02/11 UFS with Journaled Soft Updates (SUJ) ● Primary purpose was to eliminate long filesystem check times with fsck(8) . ● SUJ journal ( .sujournal ) logs only two inconsistencies possible in SU:

  34. FreeBSD Enterprise Storage Polish BSD User Group Internal Solutions - UFS 2020/02/11 UFS with Journaled Soft Updates (SUJ) ● Primary purpose was to eliminate long filesystem check times with fsck(8) . ● SUJ journal ( .sujournal ) logs only two inconsistencies possible in SU: ○ Allocated but unreferenced blocks.

  35. FreeBSD Enterprise Storage Polish BSD User Group Internal Solutions - UFS 2020/02/11 UFS with Journaled Soft Updates (SUJ) ● Primary purpose was to eliminate long filesystem check times with fsck(8) . ● SUJ journal ( .sujournal ) logs only two inconsistencies possible in SU: ○ Allocated but unreferenced blocks. ○ Incorrectly high link counts (including unreferenced inodes).

  36. FreeBSD Enterprise Storage Polish BSD User Group Internal Solutions - UFS 2020/02/11 UFS with Journaled Soft Updates (SUJ) ● Primary purpose was to eliminate long filesystem check times with fsck(8) . ● SUJ journal ( .sujournal ) logs only two inconsistencies possible in SU: ○ Allocated but unreferenced blocks. ○ Incorrectly high link counts (including unreferenced inodes). ● 200 GB data on disk takes 1 second with SUJ under fsck(8) .

  37. FreeBSD Enterprise Storage Polish BSD User Group Internal Solutions - UFS 2020/02/11 UFS with Journaled Soft Updates (SUJ) ● Primary purpose was to eliminate long filesystem check times with fsck(8) . ● SUJ journal ( .sujournal ) logs only two inconsistencies possible in SU: ○ Allocated but unreferenced blocks. ○ Incorrectly high link counts (including unreferenced inodes). ● 200 GB data on disk takes 1 second with SUJ under fsck(8) . ○ Same disk with SU only (w/o Journaling) takes 27 minutes es (180 800 0 times es mor ore).

  38. FreeBSD Enterprise Storage Polish BSD User Group Internal Solutions - UFS 2020/02/11 UFS with Journaled Soft Updates (SUJ) ● Primary purpose was to eliminate long filesystem check times with fsck(8) . ● SUJ journal ( .sujournal ) logs only two inconsistencies possible in SU: ○ Allocated but unreferenced blocks. ○ Incorrectly high link counts (including unreferenced inodes). ● 200 GB data on disk takes 1 second with SUJ under fsck(8) . ○ Same disk with SU only (w/o Journaling) takes 27 minutes es (180 800 0 times es mor ore). ● 10 TB data on disk takes 1 minute with SUJ under fsck(8) .

  39. FreeBSD Enterprise Storage Polish BSD User Group Internal Solutions - UFS 2020/02/11 UFS with Journaled Soft Updates (SUJ) ● Primary purpose was to eliminate long filesystem check times with fsck(8) . ● SUJ journal ( .sujournal ) logs only two inconsistencies possible in SU: ○ Allocated but unreferenced blocks. ○ Incorrectly high link counts (including unreferenced inodes). ● 200 GB data on disk takes 1 second with SUJ under fsck(8) . ○ Same disk with SU only (w/o Journaling) takes 27 minutes es (180 800 0 times es mor ore). ● 10 TB data on disk takes 1 minute with SUJ under fsck(8) . ○ Same disk with SU only (w/o Journaling) took approximately 10 hours .

  40. FreeBSD Enterprise Storage Polish BSD User Group Internal Solutions - UFS 2020/02/11 Why UFS in 2020?

  41. FreeBSD Enterprise Storage Polish BSD User Group Internal Solutions - UFS 2020/02/11 Why UFS in 2020? ● UFS has both fragments and blocks :

  42. FreeBSD Enterprise Storage Polish BSD User Group Internal Solutions - UFS 2020/02/11 Why UFS in 2020? ● UFS has both fragments and blocks : ○ Files smaller than blocksize can be stored in individual fragments.

  43. FreeBSD Enterprise Storage Polish BSD User Group Internal Solutions - UFS 2020/02/11 Why UFS in 2020? ● UFS has both fragments and blocks : ○ Files smaller than blocksize can be stored in individual fragments. ○ Can create filesystem optimized for small files (1 KB) with (8 KB) blocksize.

  44. FreeBSD Enterprise Storage Polish BSD User Group Internal Solutions - UFS 2020/02/11 Why UFS in 2020? ● UFS has both fragments and blocks : ○ Files smaller than blocksize can be stored in individual fragments. ○ Can create filesystem optimized for small files (1 KB) with (8 KB) blocksize. ● UFS can be grown online with growfs(8) at boot time or anytime at system work.

  45. FreeBSD Enterprise Storage Polish BSD User Group Internal Solutions - UFS 2020/02/11 Why UFS in 2020? ● UFS has both fragments and blocks : ○ Files smaller than blocksize can be stored in individual fragments. ○ Can create filesystem optimized for small files (1 KB) with (8 KB) blocksize. ● UFS can be grown online with growfs(8) at boot time or anytime at system work. ● Soft Updates is great for apps/databases with their own log (like PostgreSQL):

  46. FreeBSD Enterprise Storage Polish BSD User Group Internal Solutions - UFS 2020/02/11 Why UFS in 2020? ● UFS has both fragments and blocks : ○ Files smaller than blocksize can be stored in individual fragments. ○ Can create filesystem optimized for small files (1 KB) with (8 KB) blocksize. ● UFS can be grown online with growfs(8) at boot time or anytime at system work. ● Soft Updates is great for apps/databases with their own log (like PostgreSQL): ○ Using Journaling would log everything twice - SU passes data throu ough.

  47. FreeBSD Enterprise Storage Polish BSD User Group Internal Solutions - UFS 2020/02/11 Why UFS in 2020? ● UFS has both fragments and blocks : ○ Files smaller than blocksize can be stored in individual fragments. ○ Can create filesystem optimized for small files (1 KB) with (8 KB) blocksize. ● UFS can be grown online with growfs(8) at boot time or anytime at system work. ● Soft Updates is great for apps/databases with their own log (like PostgreSQL): ○ Using Journaling would log everything twice - SU passes data throu ough. ● Soft Updates has interesting property regarding short lived (temporary) files :

  48. FreeBSD Enterprise Storage Polish BSD User Group Internal Solutions - UFS 2020/02/11 Why UFS in 2020? ● UFS has both fragments and blocks : ○ Files smaller than blocksize can be stored in individual fragments. ○ Can create filesystem optimized for small files (1 KB) with (8 KB) blocksize. ● UFS can be grown online with growfs(8) at boot time or anytime at system work. ● Soft Updates is great for apps/databases with their own log (like PostgreSQL): ○ Using Journaling would log everything twice - SU passes data throu ough. ● Soft Updates has interesting property regarding short lived (temporary) files : ○ Create file + write data to it + delete it (in short time span).

  49. FreeBSD Enterprise Storage Polish BSD User Group Internal Solutions - UFS 2020/02/11 Why UFS in 2020? ● UFS has both fragments and blocks : ○ Files smaller than blocksize can be stored in individual fragments. ○ Can create filesystem optimized for small files (1 KB) with (8 KB) blocksize. ● UFS can be grown online with growfs(8) at boot time or anytime at system work. ● Soft Updates is great for apps/databases with their own log (like PostgreSQL): ○ Using Journaling would log everything twice - SU passes data throu ough. ● Soft Updates has interesting property regarding short lived (temporary) files : ○ Create file + write data to it + delete it (in short time span). ○ Neither data nor metadata from this file will ever touch filesystem.

  50. FreeBSD Enterprise Storage Polish BSD User Group Internal Solutions - UFS 2020/02/11 Why UFS in 2020? ● UFS has both fragments and blocks : ○ Files smaller than blocksize can be stored in individual fragments. ○ Can create filesystem optimized for small files (1 KB) with (8 KB) blocksize. ● UFS can be grown online with growfs(8) at boot time or anytime at system work. ● Soft Updates is great for apps/databases with their own log (like PostgreSQL): ○ Using Journaling would log everything twice - SU passes data throu ough. ● Soft Updates has interesting property regarding short lived (temporary) files : ○ Create file + write data to it + delete it (in short time span). ○ Neither data nor metadata from this file will ever touch filesystem. ● Netflix uses UFS in 2020 for their content storage on FreeBSD.

  51. FreeBSD Enterprise Storage Polish BSD User Group Internal Solutions - ZFS 2020/02/11 ZFS - Zettabyte File System

  52. FreeBSD Enterprise Storage Polish BSD User Group Internal Solutions - ZFS 2020/02/11 ZFS - Zettabyte File System ● Modern pooled storage.

  53. FreeBSD Enterprise Storage Polish BSD User Group Internal Solutions - ZFS 2020/02/11 ZFS - Zettabyte File System ● Modern pooled storage. ● Always consistent on-disk state - no fsck(8) needed.

  54. FreeBSD Enterprise Storage Polish BSD User Group Internal Solutions - ZFS 2020/02/11 ZFS - Zettabyte File System ● Modern pooled storage. ● Always consistent on-disk state - no fsck(8) needed. ● Snapshots (read only) and clones (read write).

  55. FreeBSD Enterprise Storage Polish BSD User Group Internal Solutions - ZFS 2020/02/11 ZFS - Zettabyte File System ● Modern pooled storage. ● Always consistent on-disk state - no fsck(8) needed. ● Snapshots (read only) and clones (read write). ● Provides end-to-end data integrity with checksums .

  56. FreeBSD Enterprise Storage Polish BSD User Group Internal Solutions - ZFS 2020/02/11 ZFS - Zettabyte File System ● Modern pooled storage. ● Always consistent on-disk state - no fsck(8) needed. ● Snapshots (read only) and clones (read write). ● Provides end-to-end data integrity with checksums . ● Have self-healing features.

  57. FreeBSD Enterprise Storage Polish BSD User Group Internal Solutions - ZFS 2020/02/11 ZFS - Zettabyte File System ● Modern pooled storage. ● Always consistent on-disk state - no fsck(8) needed. ● Snapshots (read only) and clones (read write). ● Provides end-to-end data integrity with checksums . ● Have self-healing features. ● Have built-in redundancy .

  58. FreeBSD Enterprise Storage Polish BSD User Group Internal Solutions - ZFS 2020/02/11 ZFS - Zettabyte File System ● Modern pooled storage. ● Always consistent on-disk state - no fsck(8) needed. ● Snapshots (read only) and clones (read write). ● Provides end-to-end data integrity with checksums . ● Have self-healing features. ● Have built-in redundancy . ● Scalable design and dynamic striping .

  59. FreeBSD Enterprise Storage Polish BSD User Group Internal Solutions - ZFS 2020/02/11 ZFS - Zettabyte File System ● Modern pooled storage. ● Always consistent on-disk state - no fsck(8) needed. ● Snapshots (read only) and clones (read write). ● Provides end-to-end data integrity with checksums . ● Have self-healing features. ● Have built-in redundancy . ● Scalable design and dynamic striping . ● Variable blocksize.

  60. FreeBSD Enterprise Storage Polish BSD User Group Internal Solutions - ZFS 2020/02/11 ZFS - Zettabyte File System ● Modern pooled storage. ● Always consistent on-disk state - no fsck(8) needed. ● Snapshots (read only) and clones (read write). ● Provides end-to-end data integrity with checksums . ● Have self-healing features. ● Have built-in redundancy . ● Scalable design and dynamic striping . ● Variable blocksize. ● Builtin replication / compression / encryption / deduplication .

  61. FreeBSD Enterprise Storage Polish BSD User Group Internal Solutions - ZFS 2020/02/11 ZFS - Zettabyte File System ● Modern pooled storage. ● Always consistent on-disk state - no fsck(8) needed. ● Snapshots (read only) and clones (read write). ● Provides end-to-end data integrity with checksums . ● Have self-healing features. ● Have built-in redundancy . ● Scalable design and dynamic striping . ● Variable blocksize. ● Builtin replication / compression / encryption / deduplication . ● Possible to add read cache as L2ARC (2 nd Level of Adaptive Replacement Cache ).

  62. FreeBSD Enterprise Storage Polish BSD User Group Internal Solutions - ZFS 2020/02/11 ZFS - Zettabyte File System ● Modern pooled storage. ● Always consistent on-disk state - no fsck(8) needed. ● Snapshots (read only) and clones (read write). ● Provides end-to-end data integrity with checksums . ● Have self-healing features. ● Have built-in redundancy . ● Scalable design and dynamic striping . ● Variable blocksize. ● Builtin replication / compression / encryption / deduplication . ● Possible to add read cache as L2ARC (2 nd Level of Adaptive Replacement Cache ). ● Possible to add write cache as ZIL ( ZFS Intent Log ).

  63. FreeBSD Enterprise Storage Polish BSD User Group Internal Solutions - ZFS 2020/02/11 ZFS - Zettabyte File System ● Modern pooled storage. ● Always consistent on-disk state - no fsck(8) needed. ● Snapshots (read only) and clones (read write). ● Provides end-to-end data integrity with checksums . ● Have self-healing features. ● Have built-in redundancy . ● Scalable design and dynamic striping . ● Variable blocksize. ● Builtin replication / compression / encryption / deduplication . ● Possible to add read cache as L2ARC (2 nd Level of Adaptive Replacement Cache ). ● Possible to add write cache as ZIL ( ZFS Intent Log ). ● Simple administration - two simple zfs(8) and zpool(8) commands.

  64. FreeBSD Enterprise Storage Polish BSD User Group Internal Solutions - ZFS 2020/02/11 ZFS - Common Myths

  65. FreeBSD Enterprise Storage Polish BSD User Group Internal Solutions - ZFS 2020/02/11 ZFS - Common Myths ● Myth #1 - lots of RAM is needed .

  66. FreeBSD Enterprise Storage Polish BSD User Group Internal Solutions - ZFS 2020/02/11 ZFS - Common Myths ● Myth #1 - lots of RAM is needed . ○ RAM is only c cache for ZFS (called ARC) and its size can be tuned down to even 10MB for example.

  67. FreeBSD Enterprise Storage Polish BSD User Group Internal Solutions - ZFS 2020/02/11 ZFS - Common Myths ● Myth #1 - lots of RAM is needed . ○ RAM is only c cache for ZFS (called ARC) and its size can be tuned down to even 10MB for example. ○ Use vfs.zfs.arc_min and vfs.zfs.arc_max in /boot/loader.conf file.

  68. FreeBSD Enterprise Storage Polish BSD User Group Internal Solutions - ZFS 2020/02/11 ZFS - Common Myths ● Myth #1 - lots of RAM is needed . ○ RAM is only c cache for ZFS (called ARC) and its size can be tuned down to even 10MB for example. ○ Use vfs.zfs.arc_min and vfs.zfs.arc_max in /boot/loader.conf file. ○ Use kern.maxvnodes in /etc/sysctl.conf file if needed to limit for sure.

  69. FreeBSD Enterprise Storage Polish BSD User Group Internal Solutions - ZFS 2020/02/11 ZFS - Common Myths ● Myth #1 - lots of RAM is needed . ○ RAM is only c cache for ZFS (called ARC) and its size can be tuned down to even 10MB for example. ○ Use vfs.zfs.arc_min and vfs.zfs.arc_max in /boot/loader.conf file. ○ Use kern.maxvnodes in /etc/sysctl.conf file if needed to limit for sure. ○ I have used 2TB ZFS mirror with 512RAM and it was rock stable for several years.

  70. FreeBSD Enterprise Storage Polish BSD User Group Internal Solutions - ZFS 2020/02/11 ZFS - Common Myths ● Myth #1 - lots of RAM is needed . ○ RAM is only c cache for ZFS (called ARC) and its size can be tuned down to even 10MB for example. ○ Use vfs.zfs.arc_min and vfs.zfs.arc_max in /boot/loader.conf file. ○ Use kern.maxvnodes in /etc/sysctl.conf file if needed to limit for sure. ○ I have used 2TB ZFS mirror with 512RAM and it was rock stable for several years. ● Myth #2 - ECC RAM must be used .

  71. FreeBSD Enterprise Storage Polish BSD User Group Internal Solutions - ZFS 2020/02/11 ZFS - Common Myths ● Myth #1 - lots of RAM is needed . ○ RAM is only c cache for ZFS (called ARC) and its size can be tuned down to even 10MB for example. ○ Use vfs.zfs.arc_min and vfs.zfs.arc_max in /boot/loader.conf file. ○ Use kern.maxvnodes in /etc/sysctl.conf file if needed to limit for sure. ○ I have used 2TB ZFS mirror with 512RAM and it was rock stable for several years. ● Myth #2 - ECC RAM must be used . ○ All filesystems benefit from ECC RAM and ZFS is no different here.

  72. FreeBSD Enterprise Storage Polish BSD User Group Internal Solutions - ZFS 2020/02/11 ZFS - Common Myths ● Myth #1 - lots of RAM is needed . ○ RAM is only c cache for ZFS (called ARC) and its size can be tuned down to even 10MB for example. ○ Use vfs.zfs.arc_min and vfs.zfs.arc_max in /boot/loader.conf file. ○ Use kern.maxvnodes in /etc/sysctl.conf file if needed to limit for sure. ○ I have used 2TB ZFS mirror with 512RAM and it was rock stable for several years. ● Myth #2 - ECC RAM must be used . ○ All filesystems benefit from ECC RAM and ZFS is no different here. ○ ZFS without ECC RAM is safer then other filesystems with ECC RAM (checksums).

  73. FreeBSD Enterprise Storage Polish BSD User Group Internal Solutions - ZFS 2020/02/11 ZFS - Common Myths ● Myth #1 - lots of RAM is needed . ○ RAM is only c cache for ZFS (called ARC) and its size can be tuned down to even 10MB for example. ○ Use vfs.zfs.arc_min and vfs.zfs.arc_max in /boot/loader.conf file. ○ Use kern.maxvnodes in /etc/sysctl.conf file if needed to limit for sure. ○ I have used 2TB ZFS mirror with 512RAM and it was rock stable for several years. ● Myth #2 - ECC RAM must be used . ○ All filesystems benefit from ECC RAM and ZFS is no different here. ○ ZFS without ECC RAM is safer then other filesystems with ECC RAM (checksums). ● Myth #3 - bad for laptop/desktop .

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