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| author | Zdenek Kabelac <zkabelac@redhat.com> | 2021-06-28 17:53:08 +0200 |
|---|---|---|
| committer | Zdenek Kabelac <zkabelac@redhat.com> | 2021-06-28 20:41:07 +0200 |
| commit | 2c6a2b6e86b57aeb96e93618193426ee129b00a6 (patch) | |
| tree | 9b3a9b2474d14288df1d260153cbf19bbcc39526 /lib/config | |
| parent | 5fcbc3bd7d3473f14e556508fff1b381431c59f0 (diff) | |
| download | lvm2-2c6a2b6e86b57aeb96e93618193426ee129b00a6.tar.gz | |
vdo: support vdo_pool_header_size
Add profilable configurable setting for vdo pool header size, that is
used as 'extra' empty space at the front and end of vdo-pool device
to avoid having a disk in the system the may have same data is real
vdo LV.
For some conversion cases however we may need to allow using '0' header size.
TODO: in this case we may eventually avoid adding 'linear' mapping layer
in future - but this requires further modification over lvm code base.
Diffstat (limited to 'lib/config')
| -rw-r--r-- | lib/config/config_settings.h | 3 | ||||
| -rw-r--r-- | lib/config/defaults.h | 3 |
2 files changed, 4 insertions, 2 deletions
diff --git a/lib/config/config_settings.h b/lib/config/config_settings.h index fe14a1eb2..d66a9a3a7 100644 --- a/lib/config/config_settings.h +++ b/lib/config/config_settings.h @@ -816,6 +816,9 @@ cfg(allocation_vdo_max_discard_CFG, "vdo_max_discard", allocation_CFG_SECTION, C "increased latency for the individual discard requests.\n" "The default and minimum is 1. The maximum is UINT_MAX / 4096.\n") +cfg(allocation_vdo_pool_header_size_CFG, "vdo_pool_header_size", allocation_CFG_SECTION, CFG_PROFILABLE | CFG_PROFILABLE_METADATA | CFG_DEFAULT_COMMENTED, CFG_TYPE_INT, DEFAULT_VDO_POOL_HEADER_SIZE_KB, vsn(2, 3, 12), NULL, 0, NULL, + "Specified the emptry header size in KiB at the front and end of vdo pool device.\n") + cfg(log_report_command_log_CFG, "report_command_log", log_CFG_SECTION, CFG_PROFILABLE | CFG_DEFAULT_COMMENTED | CFG_DISALLOW_INTERACTIVE, CFG_TYPE_BOOL, DEFAULT_COMMAND_LOG_REPORT, vsn(2, 2, 158), NULL, 0, NULL, "Enable or disable LVM log reporting.\n" "If enabled, LVM will collect a log of operations, messages,\n" diff --git a/lib/config/defaults.h b/lib/config/defaults.h index 2870dee12..d5e5b3b1a 100644 --- a/lib/config/defaults.h +++ b/lib/config/defaults.h @@ -181,8 +181,7 @@ * VDO pool will reverve some sectors in the front and the back of pool device to avoid * seeing same device twice in the system. */ -#define DEFAULT_VDO_POOL_HEADER_SIZE (1024) // 512KiB - +#define DEFAULT_VDO_POOL_HEADER_SIZE_KB (512) #define DEFAULT_FSADM_PATH FSADM_PATH |