Kirk McKusick
8c22cf9b09
Fix fsck_ffs incorrectly reporting "CANNOT READ BLK: NNNN" errors. ...
A long-standing bug in Pass 1 of fsck_ffs in which it is reading in
blocks of inodes to check their block pointers. It failed to round
up the size of the read to a disk block size. When disks would
accept 512-byte aligned reads, the bug rarely manifested itself.
But many recent disks will no longer accept 512-byte aligned reads
but require 4096-byte aligned reads, so the failure to properly
round-up read sizes to multiples of 4096 bytes makes the error
much more likely to occur.
Reported by: Peter Holm and others
Tested by: Peter Holm and Rozhuk Ivan
MFC after: 3 days
Sponsored by: Netflix
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8c22cf9b09