01-06-2009
How do I set the block size in ZFS?
I was able to create a zpool and then created a zfs filesystem (BTW, thanks to all those who helped me get by the hard drive formatting issues I had posted here earlier).
I read that ZFS does variable block size, that is, a user can specify a blocksize, and if a file is smaller than the user specified blocksize, the file would be the smallest power of two between 512 bytes and the user specified blocksize.
Just how would I specify the blocksize? Is that an option I have to use in the zpool create command?
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LEARN ABOUT CENTOS
grub2-fstest
GRUB-FSTEST(3) Library Functions Manual GRUB-FSTEST(3)
NAME
grub-fstest -- Debug tool for GRUB's filesystem driver.
SYNOPSIS
grub-fstest [-c | --diskcount=NUM] [-C | --crypto]
[-d | --debug=STRING] [-K | --zfs-key=FILE|prompt]
[-n | --length=NUM] [-r | --root=DEVICE_NAME]
[-s | --skip=NUM] [-u | --uncompress] [-v | --verbose]
IMAGE_PATH <blocklist FILE | cat FILE |
cmp FILE LOCAL | cp FILE LOCAL | crc FILE |
hex FILE | ls PATH | xnu_uuid DEVICE>
DESCRIPTION
grub-fstest is a tool for testing GRUB's filesystem drivers. You should not normally need to run this program.
OPTIONS
--diskcount=NUM
Specify the number of input files.
--crypto
Mount cryptographic devices.
--debug=STRING
Set debug environment variable.
--zfs-key=FILE|prompt
Load ZFS cryptographic key.
--length=NUM
Handle NUM bytes in output file.
--root=DEVICE_NAME
Set root device.
--skip=NUM
Skip NUM bytes from output file.
--uncompress
Uncompress data.
--verbose
Print verbose messages.
COMMANDS
blocklist FILE
Display block list of FILE.
cat FILE
Display FILE on standard output.
cmp FILE LOCAL
Compare FILE with local file LOCAL.
cp FILE LOCAL
Copy FILE to local file LOCAL.
crc FILE
Display the CRC-32 checksum of FILE.
hex FILE
Display contents of FILE in hexidecimal.
ls PATH
List files at PATH.
xnu_uuid DEVICE
Display the XNU UUID of DEVICE.
SEE ALSO
info grub
Wed Feb 26 2014 GRUB-FSTEST(3)