PROBE::IOBLOCK.END - Online Linux Manual PageSection : 3stap
Updated : November 2020
Source : SystemTap Tapset Reference
Note : IO Scheduler and block IO Taps
NAMEprobe::ioblock.end − Fires whenever a block I/O transfer is complete.
SYNOPSISioblock.end
VALUESrw binary trace for read/write request ino i−node number of the mapped file size total size in bytes hw_segments number of segments after physical and DMA remapping hardware coalescing is performed sector beginning sector for the entire bio idx offset into the bio vector array name name of the probe point phys_segments number of segments in this bio after physical address coalescing is performed. vcnt bio vector count which represents number of array element (page, offset, length) which makes up this I/O request error 0 on success opf operations and flags bytes_done number of bytes transferred flags see below BIO_UPTODATE 0 ok after I/O completion BIO_RW_BLOCK 1 RW_AHEAD set, and read/write would block BIO_EOF 2 out−out−bounds error BIO_SEG_VALID 3 nr_hw_seg valid BIO_CLONED 4 doesn't own data BIO_BOUNCED 5 bio is a bounce bio BIO_USER_MAPPED 6 contains user pages BIO_EOPNOTSUPP 7 not supported devname block device name
CONTEXTThe process signals the transfer is done.
SEE ALSO\ntapset::ioblock(3stap) 0
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ERROR : Need New Coding : (rof_nr_x|149|probe::ioblock.end.3stap|111|\n |.SH SEE ALSO\n
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